3 rims = 18 X 8; one rim = 18 X 9.

[z06bigbird]

I have an extra set of rims that I want to put on an 06 530i. Tires are all 245-40-18. Just noticed that one rear wheel is 18 X 9; the other three are 18 X 8.

Any significant problems using that single wider rim (9") when 3 others are 8"?) All tires will be 245-40-18.