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      12-07-2024, 05:50 PM   #8
Mavus
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Drives: E90 335i, F80 zcp
Join Date: Sep 2011
Location: PA

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Quote:
Originally Posted by RockCrusher View Post
Many or at least some do run non spec tires — summer, all season, winter — without any issues.

But I have come across a number who have reported issues.

It is my feeling tires are too expensive to gamble non spec tires will be ok. I buy spec tires — over the years lots of spec tires — and have experienced no differences. The first Pirelli tires my Boxster came with and the last set of Pirelli I put on the car felt the same and that was about 16 years between the two sets of tires and 300K+ miles. Same with my other Porsche.

So far have not had to buy new tires to replace worn out tires for any BMW but when the time comes you can be sure I'm buying spec tires.

I don't like to mess with success or fix what ain't broke...
There is no gamble. If your car is not running properly ie driving smooth with non * spec tires of stock sizing there is an issue with the car. I switch from Mich * spec to non * spec Bstone snows and the car is smooth with both sets. Mich are 19” and Bstones 18”.


Last edited by Mavus; 12-07-2024 at 05:53 PM..
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