Quote:
Originally Posted by Mavus
yeah of course use whatever tires you want just like the rest of us just don’t claim that the car somehow knows or reacts differently btw those two tire specs. star spec simply means it meets certain design criteria that bmw wants for rubber performance and wear. the secret sauce is in the rubber chem, tire structure, manuf process and tread patterns developed by tire manuf.
if you take your M8 to track you’d most likely use non * spec tires and the car will be perf fine. you can even ask bmw to confirm.
here is a tire for g30 540xi that is tuned for mb and bmw but can work on other cars also
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Its not just about the rubber compound, its about rolling circumference being the same using spec tires. Non spec tires have a bigger % variation in RC from factory than spec tires. Its like a lottery. To swear by non spec tires that are just as good, is slighly misleading. You can obviously get a good set with very close RC with non spec tires but there s that bigger or lessser chance you get some uneven rolling circumference tires with non specs than in the end will only create problems for drivetrain/xdrive.
Everyone is free to buy what they want but if you want to be 100% safe it's the spec tires. Of course you can might aswell have non spec tires with any issues and claim them the best but thats because you got the right ones. I even talked to an production manager employee at Continental tyres and confirmed me just this! (this was in the summer before i noticed my issues).
I would recommend everyone who is looking to be problem free go the route i went. Dont gamble. Why waste money and eventually get a bad set with uneven RC when you can be on point from the beggining. I got not one but 3 issues fixed just because of the tires, and i repeat i was using the premium Michelin Pilot Sport 4s not some cheapies.
I dont look to argue with anyone because for me its not even a situation of if's and but's. I went through some problems and this fixed them. I got my car checked before that at the dealership and they didnt find any prior issue, so i had to be the tires, and it was!