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ACL summer tyre testing - 28 tyres on the test bench

Published on 16.03.2020

In an effort to improve road safety and provide members with the best information, ACL has been involved in comparison tyre testing in conjunction with European automobile clubs for many years now.

For this summer, two sizes of twenty-eight summer tyres were run through a battery of tests. This is for tyres suitable for compact sports cars (225/40 R18) and MPVs and mid-class SUVs (235/55 R17). We can recommend all but two of the tyre models.

225/40 R18 size

Testing of the 225/40 R18, suitable for mid-class cars (including the VW Golf, Ford Focus, Seat Leon and KIA Ceed) showed that 15 of the 16 products are rated “good” (4) or “satisfactory” (11). The tyre with the worst results is the Rotulla Setulla S-Pace RU01. Its “adequate” rating is mainly due to its poor performance on wet roads. This year’s test winners are the Continental PremiumContact 6 and the Michelin Pilot Sport 4. They stand out for their multi-use capability and good results for most of the tests conducted.

235/55 R17 size

After the disappointing results in 2019 for tyres for vans and “C”-type minibuses, this year’s testers went for the alternative that is also fitted to mid-class SUVs and MPVs. This refers to the 235/55 R17 size. The results this year are clearly better. Of the 12 tyres tested, 11 are rated “good” (4) and “satisfactory” (7). Only one tyre, the Laufenn S-Fit EQ, failed the test due to poor performance on wet roads.
 
As every other year, the tyres were tested against all safety criteria to show their performance in real conditions. The main criteria were road-holding on dry and wet roads. Wear, high speed resistance, noise emissions and fuel consumption were also measured.

All the results are summarised in the table opposite. The complete test is available on the ACL website www.acl.lu and can be obtained on request from the ACL by telephone (+352 450045-1) or by e-mail (acl@acl.lu).


ACL summer tyre testing: Results 

 

225/40 R18 size


 

235/55 R17 size




very good (0.5-1.5) ; good (1.6-2.5) ; satisfactory (2.6-3.5) ; adequate (3.6-4.5); inadequate (4.6-5.5)
 

Evaluation

– “very good”: the tyre satisfies all higher to average level test criteria
– “good”: the tyre satisfies all test criteria important to safety and the environment
– “satisfactory”: the tyre may show slight failings in some of the criteria
– “adequate”: the tyre shows clear failings in some of the criteria
– “inadequate”: the tyre shows serious failings
 

Everything you need to know about tyres: advice from ACL

  • Always fit 4 identical tyres (type, size, tread and wear)
  • If the tyres have different tread depths, fit the best tyres at the rear. This improves stability.
  • What tyres do I need for my car? If you don’t know which tyre is suitable for your car, refer to the maintenance manual. It will list the permitted tyre types and maximum speeds
  • Tyre pressure. Driving with under-inflated tyres is dangerous and accelerates wear. The maintenance manual provides all the details about correct tyre pressures. Some cars have the tyre pressure levels displayed on the door frame or on the inside of the fuel cap. For heavy loads or high-speed journeys, the tyre pressure needs to be increased by 0.2 bars. Over-inflation by up to 0.5 bars will improve handling but the ride will be slightly less comfortable. We recommend regular tyre pressure checks (when cold and including the spare tyre if there is one).
  • Parking. Look after your tyres. To avoid premature damage to your tyres, make sure that you go over obstacles slowly when parking (going up on the pavement, for example), that you approach the kerb face or any other obstacle at a right angle and that you don’t park with the tyres squashed against it or half on and half off.
 

 

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