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Do you know if some 17" wheels wok good on our cars?
If yes what size of tyres shoul one use with it?

I now have the original 15" ones, but as I will mostly use the car for track-day events, supose 17's will give the car a more precise road holding.

By the way Just orderd the Z3M differential cover, for better differential cooling and off-course the better Bushing that comes with it.

I will also finally instal the 25mm Brake Master cilinder up-grade that was ordered from the usa and has been waiting too long in the box....
Will keep you posted on that!

Regards
Frederico

Yeah keep us posted on the brake upgrade... have to postpone that myself cuz I bought a 325i for the track... can't have it all but I'm quite sure it will happen one day.

As for the wheels... I usually stick to Alpina spec meaning for the E30 7x16 at the front with 195/50-16 and 7x16 or 8x16 at the rear with 195 or 205/50-16.

Or fit M3 struts all round and fit 16" M3 cross spokes... well that's all a matter of taste!