I know you guys get this all the time but what is the widest i can go on an 8.5 inch wheel all around without rolling on stock 328i suspension?

If you run spacers in the front you can fit 245's up front easily. You can fit 255's all the way around but you may have to roll the rear fenders.

my track wheels have 245/40's all the way around with no spacers and no clearance issues

and those are 8 inch wheels

what are 8 inch wheels?

width

18x8's

18x8's may be a bit different, whats the tire size you are looking at?

my track rims are 17x8.5 w 245/40/17

im just trying to figure out th widest i can go on them without rubbing or rolling.