This time in the ADAC summer tire test: 17 current models in the 225/50 R17 dimension for many mid-size vehicles from the audi A4 to the VW passat. The overall balance is positive, but in some disciplines the tires showed large differences in performance- and one model failed completely.
- Falken, conti, kumho, bridgestone right at the front
- Enormous differences in wet braking
- Inexpensive tires also perform well
The result: of 17 tested models, the overall performance of four models is rated "good", out of twelve tires with "satisfactory and from a tire with "poor" rates. After the table with the scores and individual assessments you will find, as always, the strengths and weaknesses of the models in comparison- and a big issue this time is the wet braking.
The test table
Very well balanced: the winners
As particularly recommendable four models apply. First and foremost: the falken azenis FK510, convincing with its balance. It offers top values on wet and dry road surfaces. In a direct comparison of the top group, however, it has slightly higher fuel consumption.
The continental premiumcontact 6 shines with above-average performance in all criteria. In the dry it offers good safety reserves, in the wet its precise handling is worth highlighting.
The third-place winner kumho ecsta PS71 is exemplary in the chapter aquaplaning, both in longitudinal and lateral direction, but also shines in all other wet disciplines. On dry roads, it scratches the borderline to a downgrade: compared to the other "good" models, it’s the other way round tire, it cannot be steered so precisely. With short braking distances, however, it still secures a good rating in the dry.
At bridgestone turanza T005 it’s the other way round: its strengths lie in short braking distances and precise handling in the dry. Compared to the best, however, the wear is somewhat higher.
In the top quartet, the kumho is the most favorable by the way: the nationwide ADAC price survey several dealers found an average price of 108 euros (as of early 2021). The conti premiumcontact 6, on the other hand, costs 148 euros. Who decides thus for the Korean product, saves with a set of tires nevertheless 160 euro.
Many satisfactory tires
The models of the VW passat also tend to save money satisfactory midfield. But here it is important to take a closer look, because these tires are not as balanced as the top performers: they usually have a specific weakness, which is why they are devalued in the overall rating. How to quickly identify individual deficits. But for those who can live with this on the basis of their individual driving habits and conditions of use, there is a wide, usually less expensive choice.
Definitely not a bargain is the michelin primacy 4, at 154 euros, the most expensive tire in the test. At least you save money because it can stay on the car for a long time: in terms of mileage it is in the top group of the test field, and also in braking on dry roads no one can beat it. However, it loses in the wet in aquaplaning and handling significantly points.
A similar wet problem have the dunlop sport maxx RT2 and the nexen N fera sport. But like the michelin, they score particularly well in dry conditions and are very precise, especially in handling.
Between the two is in the table with a better wet, but worse dry result of the inexpensive esa+tecar spirit pro one (96 euro). Esa+tecar? This is the brand of the trading company tecar, which has its summer and winter tires produced under contract by renowned tire manufacturers. In fact, the models have performed quite well in the ADAC tests in recent years, but they are not available everywhere, because in germany they are usually sold through affiliated, brand-name car dealerships.
An alternative: second brands
The tires tested in the lower half of the classification are usually second brands of premium manufacturers who want to serve price-oriented customers: semperit, barum and viking belong to continental, glue is a michelin daughter, sava a goodyear product and running a hankook offshoot. With the exception of the semperit (downgrading: dry), all models score poorly because of their weaker wet performance worse, but still satisfactory overall.
Only "satisfactory is also the overall verdict for the pirelli cinturato P7 – and that should not satisfy the expensive premium manufacturer. After all, the Italians only had their successful P7 model with the C2 variant thoroughly overhauled, which also worked well on dry roads with the top score of 1.5 in the test. But on wet it can not keep the level with weaker braking and handling values.
Poor: the firestone roadhawk
The firestone roadhawk, a bridgestone product, is the last placed in our test. its properties on dry roads are satisfactory in principle, but only at warmer temperatures does the test vehicle with the firestone feel imprecise.
At wet road on the other hand, its grip level is below average: large steering angles are necessary to maneuver the roadhawk through the handling course. If you then brake or accelerate in a curve, the grip often breaks off completely.
Compared to the test field, its handling performance is poor: the individual criterion of wet handling is reflected in the main criterion of wet handling and ultimately leads to the ADAC verdict of "poor".
Vehicle overview of dimension 225/50 R 17 Y
The following vehicle models (and many others) can be fitted with the tire size tested here, depending on engine and equipment.
Model series
alfa romeo |
giulia |
audi |
A4, A5, TT |
BMW |
3 series, 4 series, X1 |
DS |
DS 5 |
honda |
accord |
lexus |
GS |
mercedes |
B- and C-class |
opel |
astra, zafira tourer |
peugeot |
3008, 5008, 508 |
renault |
latitude |
Text: thomas kroher. Photos: ADAC/wolfgang grube.
technical advice: ruprecht muller, matthias zimmermann, ADAC technik zentrum
Do you need the test results of a different tire size?? Click here for an overview of the other summer tire sizes tested.
A good overview with all current test tables of various sizes is also provided by the digital brochure ADAC tire advisor.,
And when buying tires, the following article will help: the most important tips for buying tires.
Methodology and background
Results and scores
The scores are shown as symbols in the results table.
Grade limits
When evaluating the results of the ADAC tire test, particular attention is paid to the balance of the tire. This is to ensure that only tires that meet certain, quite demanding minimum requirements in all criteria receive a good ADAC rating. For most car drivers, tires with excellent individual properties are of little use if they show significant weaknesses in other criteria at the same time. For this reason, minimum scores must be achieved in the most important supercriteria in order to achieve a good ADAC rating.
A tire, which strives for the ADAC judgement "good", must lie thus in all relevant criteria at least within the ranges of the column "good" (2,5 or better). If in a criterion the lower grade limit is not reached (2.6 or worse), at best only the grade "satisfactory" can be awarded.
The same applies, of course, to the ADAC ratings "satisfactory" and "sufficient". The rating "satisfactory" can only be achieved if the scores in the criteria "dry", "wet", fuel consumption" and "wear" are not worse than 3.5, for winter and all-season tires this also applies to the criteria "snow" and "ice". For the ADAC rating "sufficient", the scores in the above criteria must be at least 4.5 or better.
Since the ADAC assumes that the performance potential of tires will increase in future tire tests, the "very good" grade has not yet been awarded. This means that the assessment criteria for the summer and winter tire tests can be retained for the time being.
Determination of the overall grade
Please note: the overall grade is only awarded for tires with the ADAC rating "good" calculated from the weighted individual scores. Tires with an ADAC rating worse than "good, experience a devaluation in the overall score.
The overall score, from which the ADAC verdict is derived, results from the worst score in one of the main criteria"dry“, „wet“, „fuel consumption“ and"wear“ (for winter and all-season tires additionally the main criteria"snow“ and"eis“), if the grade in this main criterion has led to the devaluation. See also the table of grade limits in the preceding paragraph. Has z.B. If a tire model receives a grade of 2.0 in three of the six main criteria listed and a grade of 2.6 in only one main criterion, the overall grade cannot be better than 2.6. In other words, the criterion in which the grade leading to the devaluation was awarded is given a weighting of 100%. All other criteria are given a weighting of 0 percent. The scores that lead to a devaluation are indicated by an underline or a footnote. If the overall score is devalued, the models with the same final score are listed in alphabetical order. Each model must also pass a "quick run" test pass, initially according to strict ADAC criteria, and in the case of deficits, according to a milder standard test. At- In the rare event that one of the two tests is not passed, a devaluation is made in accordance with the following criteria the o.G. Evaluation scheme leads to a devaluation in the overall score.
This method of determining the overall score is intended to prevent a tire model that has one or more clear weaknesses from compensating for these weaknesses with pronounced strengths in other main criteria. Please note: the "noise" criterion is not taken into account in this type of overall score determination.
Product selection
The test consortium decides on the selection of products. The tire manufacturers have no influence on this. The tire dimensions to be tested are jointly selected and defined. Criteria such as market strength or the relevance of previous tests play an important role here. Decision based on majority vote of all test partners. The selection of tire models is also based on market conditions. The aim is to cover the entire price range from premium brands to the low-price segment. Since the tire market now includes many brands, some of which are not very well known, an attempt is also made to take these "new" brands into account. With limited test capacities, this results in the omission of other, usually better-known brands. In the product selection process, only tire models with an EU tire label of class "C" or better in the "wet grip" criterion are considered. This is intended to prevent tires from taking part in the comparison test that do not appear to meet minimum requirements in this important criterion.
Procurement of the test products
The purchasing process ensures that the tires tested correspond to the series production status. A total of 28 tires per model are purchased in small quantities from up to 5 different dealers. By using several sets of tires for the same test criterion (z.B. wet braking), which were purchased from different dealers and sometimes at different times, can be checked to ensure that the quality uniformly corresponds to the series. If there is only the slightest doubt about the uniform quality of individual tire models, additional tires are purchased undercover and additional tests are carried out. In a third purchasing step, shortly before publication, additional visual samples of tires can be purchased and retested in the decisive meaningful criteria. If tires had been manufactured separately for the test, this would also become apparent through this measure. At the latest then these tire models would be taken out of the test. As a matter of principle, only tire models that are widely and generally available at the time of purchase are tested. New tire models introduced to the market during the test cannot be considered.
Preparation of the test products
At the beginning, the tires are subjected to an initial test. The exact model specifications, the DOT and/or production numbers and the EU tire label data are recorded. The various tire models are randomly assigned product numbers via which they are identified until the end of the test. Thus the brands and model designations for the further evaluations step into the background. Prior to the actual tests, the test tires are driven over distances of approx. run in for 300 kilometers to ensure the final product properties. The wheel positions of the tires are changed during this process.
Test sites used
At our own and other test sites, all activities relating to the ADAC tire test and the test drives themselves are carried out exclusively by ADAC employees. They are carried out completely independently of the rest of the test operation on the site in question. During the tests and test preparations at tire manufacturer’s sites, the test products are constantly guarded. At all other times the test products are under lock and key.
- The tire properties on dry surfaces are currently being tested at a Bridgestone test site in Italy.
- Tire characteristics on wet surfaces as well as fuel consumption and noise behavior (both on dry surfaces) are currently being carried out at a continental test site in germany.
- The wear behavior of the tires is tested by means of road convoys with several identical vehicles in the vicinity of landsberg am lech. In addition, tests are carried out on a bridgestone wear test rig. These tests are validated by cross-comparisons in road convoys.
- The snow tests of the winter and all-season tire test are carried out at a manufacturer-independent test site of the company "testworld" in Finland.
- The ice tests of the winter and all-season tire test are carried out on an ice test track of the manufacturer continental.
Test criteria
10 %
- All-season tires are treated like winter tires with regard to the criteria and their weighting. Dry road (for weights, see table, with grade limit): driving behavior: general driving behavior of the tires below the critical limit like z.B. Straight-line stability, steering response, lateral control. Driving safetyDriving behavior in the border area like z.B. lane change, cornering stability. BrakesBraking distance during ABS braking from 100 to 1 km/h, five test runs per tire model.
- Wet road (for weightings, see table, with grade limits): brakes (weighting 30 percent): braking distance under ABS braking from 80 to 20 km/h on asphalt and concrete road surfaces, three repetitions with five test runs each. Longitudinal aquaplaning (weighting 20 percent): acceleration while passing through a water basin, water depth 7 millimeters, only the left-hand wheels roll through the water basin, measured variable is the upward speed at which the wheel in question enters a slip of 15 percent, five measurement runs per tire model. Aquaplaning transverse (weighting 10 percent): gradually faster travel on a circular track (diameter 200 meters) with a 20-meter-long, flowing-water wetted sector, water depth 5 millimeters, speed increase from 65 to 95 km/h in steps of 5 km/h, the measured variable is the variation in lateral acceleration on the water track, one measurement run per tire and speed step. Handling (weighting 30 percent): fastest possible driving (in the border area) of a permanently wet, winding handling course (length 1900 meters) by two test drivers, measured variable: lap time, in addition independent subjective assessment of the tire properties by both test drivers, each driver completes two runs of three laps per tire model. circle/side guidance (weighting 10 percent): fastest possible driving on a circular track with continuous rainfall, measured variable: lap time, five measurement laps per tire model.
- Snow-covered road (only winter- u. All-season tires, see table for weights, with grade limit): brakes (weighting 40 percent): braking distance during ABS braking from 30 to 5 km/h, three to five runs per tire model, each with five measurement runs. Start-up (weighting 20 percent): acceleration measurement at low speeds in the range of 10 to 60 percent slip, three to six passes with six measurements each. Handling (weighting 40 percent): handling (weighting 40 percent): time measurement while driving on a level circuit as well as subjective assessment of traction, lateral guidance and balance of the axles, two to three runs with three measurements each. The driving times (weighting 10 percent of the snow rating) and the averaged assessment scores (weighting 30 percent of the snow rating) of the handling runs are evaluated.
- icy road (winter u only. All-season tires, weighting see table, with grade limit): brakes (weighting 60 percent): ABS braking on an icy road from 20 to 5 km/h, the mean deceleration is determined and evaluated. lateral guidance (weighting 40 percent): lateral guidance forces measured using a vehicle guided at the front and rear on a rail system and traveling at constant speed over an icy track. The force measurements are carried out at eleven different steering angle settings. The average of these forces is used to evaluate.
- Noise (see table for weights, without grade limit): interior noise (weighting 50 percent): subjective evaluation of the interior noise by two persons during coasting tests of a vehicle between 80 and 30 km/h on asphalt and concrete road surfaces with the engine stationary. Exterior noise (weighting 50 percent): noise measurement according to ISO 362 on asphalt according to ISO 10844 when rolling by at 80 km/h with engine stopped.
- Fast running test (in case of suspicion) Testing on external drum test rig (2 m diameter) in accordance with DIN 78051, additional multi-stage ADAC test program, several repetitions depending on initial results, measurement and test results. Assessment variables: speed level reached, time spent in the last speed level and damage pattern; passing the standard test and the more stringent ADAC requirements are assessed. No separate weighting. It is assumed that all tests are passed as a matter of course. Graduated devaluation only occurs if one of the high-speed tests is not passed.
- fuel consumption (weighting 10 percent, with grade limit): fuel consumption measurement using a high-precision fuel consumption measuring system while driving at a constant speed of 100 km/h with the same vehicle over a distance of 2 kilometers, two runs with five measurement runs per tire model. Measured variable: fuel consumption in liters per 100 kilometers.
- Tire wear (for weights see table, with grade limit): convoy driving with several identical vehicles over a distance of 15.000 kilometers per tire, with the driver and tire changing in opposite directions. Test rig measurements: The convoy route is simulated over a distance of 5,000 kilometers and validated with convoy tests. Measured quantity:Seven laser-based measurements of the tire profile over the distance driven, extrapolation of the remaining mileage until the legal minimum tread depth of 1.6 millimeters is reached.
- Special features of all-season tires In order to meet the requirements of all-season use, z.B. Tests carried out on dry roads in June/July in comparison with summer tires. Half of the wear tests were carried out in the months of March to May and the other half in June.
evaluation, assessment and grades
The measurement-based results of the individual tire models are compared with the results of a reference tire model that participates in all tests and whose characteristics are known. By carrying a reference tire, changes in the test framework conditions can be identified and, if necessary, compensated for. Compensated. The performance of the test tires in relation to the reference tire is presented as percentages, with the performance of the reference tire corresponding to 100%. This means that the respective results can be assigned to a grading scale.
The subjective evaluations are formulated directly in grades.
The grade scale ranges from 0.6 (very good) to 5.5 (poor). The scores for the main criteria are derived from the scores for the weighted individual criteria. The weighted main criteria are used to arrive at the final grades, taking into account the grade limits.
Rules of good testing practice
ADAC is one of the first organizations to support the "good testing" voluntary commitment the federal ministry of justice and consumer protection.
Comprehensive transparency and traceability remain top priorities in the automotive club’s testing activities. This is why ADAC is one of the first organizations to take part in a new initiative of the Federal Ministry of Justice and Consumer Protection (BMJV) for more transparency in product testing. The full support of the club to the self-commitment has dr. August markl, first vice president of ADAC e.V., the ministry is notified in a letter. ADAC has signed an undertaking to comply with the rules of good testing practice presented by the BMJV.
Scientific basis
This means that testing activities will continue to be carried out transparently and independently, that the methodology used will be made public with reference to scientific and legal principles, and that the suppliers of the tested products will be given advance notice of publication. As a recognized consumer protection organization, the ADAC already provides interested citizens with comprehensive and comprehensible information on each of its independent tests. In addition to the methodology, for example, the institutes with which the respective test was carried out are listed – as is information on the double external quality assurance.
Quality assurance
the test consortium decides on the products and the test methodology. This consortium consists of many european automobile clubs and consumer protection organizations. The tire manufacturers are not in this consortium. The tire dimensions to be tested are discussed and determined in the consortium. Criteria such as market strength or the up-to-dateness of a previous test play an important role here. The decision is made by a majority vote of all the test partners present. The test methods are based on many years of ADAC expertise in the service of safety. There is a long-term schedule for changes in the test methodology, which is also presented and discussed at each meeting. Here, too, all the test partners present decide together. the purchasing process at various locations and a quality management system ensure that the tested tires correspond to the series standard. A total of 28 tires per model are purchased from the public sector.
For the maturity test there is an expert advisory board, which includes experts from universities, research institutes and other organizations as well as manufacturers. Test design and criteria are also presented here. the aim is to exchange information on the current state of the art (product developments) and on the latest scientific findings.
For quality assurance, both subjective and objective evaluations are carried out several times and independently of each other by different test drivers. the test drivers regularly coordinate with each other and with other experts in various training sessions. All evaluation standards and test methods are verified by discussions with further test partners (z.B. ICRToAMTC, TCS) secured. In addition, the measurement methodology is discussed with representatives from the tire industry through annual technical advisory boards. Prior to the publication of the test, each participating tire manufacturer is informed about the results of its products in relation to the used and designated control tire within the framework of the manufacturer’s preliminary information.
Üoverview of the testing and quality assurance procedures within the test
- Tire testing according to DIN 78 051
- Anonymization of the test samples
- Laser measurements of tread depth
- Multiple evaluations by independent test drivers
- Correction of temperature-related track influences by reference tires
- Mathematical error considerations
- Plausibility check of multiple tests
- Driving tests on certified asphalt (ECE-R 117)
- Noise measurement according to ISO 362
- High-speed test by MPA-darmstadt
Procedure and appropriateness of the test procedures were verified by the sworn expert prof. Dr.-ing. Gunter willmerding confirmed in 2011.
Price details
The prices of the individual tire models were determined as of the reporting date 22.1.2021 from the federal association of tire dealers and vulcanizers e.V. (BRV) surveyed at 25 representatively selected tire dealers. All regions of the country as well as rural and urban areas were considered in the selection of the companies. The companies are partly independent, partly part of retail chains and partly part of a group. Cooperations associated. An average price for germany as a whole is calculated from all the data provided.
Deviations from the stated average prices are possible not only regionally, but also in terms of time. The price information is provided primarily for guidance prior to researching local suppliers.
When looking for a favorable offer for you, in addition to online offers, you should also check with various regional dealers regarding the tire price and other service costs.