After about 40000 kilometres with Westlake tires in the tire size 185 60 15 have now converted to adhesive tires. My experience with the Opel Meriva: – the first 200 kilometers slightly slippery on dry road. – then not noticeable on wetness or on dryness. – very low wear – at the end at approx.2.5 – 3 mm profile depth very susceptible to aquaplaning. – until the end good braking behaviour in wet weather – until the end no tire noise – no tyre damage Conclusion: better than expected.