Originally Posted by Nitronic
I was thinking of getting some pair of winter tyres on the OEM 19" wheels. I prefer Nokian tyres Hakkapeliitta R for snowy Finland but I have some problems with the sizes they offer:
235/35, 245/40 or 255/40 R19.
What do you think if I get 235/35 for front 8,5" wheels and 245/40 for the rear 9,5" wheels? Does this cause any problems with the sensor systems, since the front get's 1% smaller and the rear 1,5% bigger than the original 19" summer tyres...
Help appreciated very much, thanks!
That does give a little bit of an odd stagger any way you go. The M3 has not demonstrated any great sensitivity to changes in diameter, so I do not think that you would have any serious problems with regard to traction control or anything. The 245/40 will look a little stretched on a 9.5" wheel though.