Z4M tyre setup – will it rub on Z4 Coup 3.0si?

[Tallest]

Does the Z4 Coupe (3.0si) has different fenders and can it take the tyre size of the Z4M?

For example, the fronts run 225-40-18 on the Z4C, and 225-45-18 on the Z4M. So that’s a 3-4% difference in rolling diameter? I want to put the 225-45-18 tyres (square) on my car for winter to gain just a bit more ground clearance, more comfort too. Do you think this is doable or will I rub on front or back?

[Jony722si]

i believe all z4s share same body panels and inner fender something.
i think the only thing you should consider about is the speed rate for getting z4m oem size tires on your z4si, unless you want go more aggressive rims offset.
i currently having 8JX19 ET:37 at front with 235/35/19 with H&R lowering spring, it rubs but not very serious that should not be worry about

[Tallest]

Originally Posted by Jony722si

i believe all z4s share same body panels and inner fender something.
i think the only thing you should consider about is the speed rate for getting z4m oem size tires on your z4si, unless you want go more aggressive rims offset.
i currently having 8JX19 ET:37 at front with 235/35/19 with H&R lowering spring, it rubs but not very serious that should not be worry about

Just FYI to anyone trying gto fit the 225/45 R18 on the 3.0Si model (not M) = it will rub at least with tyres Im using at the moment (ContiIceContact) / winters, agressive shoulders obviously. Rubs on front fenders towards front, going over bumps, and on arches at 10 oclock. Expensive lesson. Have to replace. A good time to bitch and moan about forum advice.