When I bought my last BMW (2008), I immediately swapped out the run-flats. I thought it was too harsh a ride. I really like the Michelin Pilot Sport tires that I replaced the OEMs with. More than that, I loved the car profile with the 225/45R18's in the front and the 255/40R18's in the rear.
I just bought a 2018 340i and immediately noticed that it no longer had that great appearance with 225/45 run-flats all around.
My question is - can I replace only the rears with NON-run-flat 255/40R18. How would it affect handling? Do I need to do all four? I know I need to have a spare.
Thanks
Hello - check out the link below to an article on this topic. In short, no you shouldn't mix the 2.
https://blog.tirerack.com/blog/make-...ead-this-first
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A tire salesman telling you to buy 4 tires instead of 2 - you don't say!
Nothing is gonna happen. Just stay with the same brand and model.
If you drive like a little old lady, fine. If you are going to push the tires, you need 4 of the same. Save the run flats for spares. Don't be cheap and dead or injured.
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