Planning on dropping my car with KW v1 with BBS LM 18x8 offset 50 18x9.5 offset 55. I'm wondering what's the right tire size to run with these wheels with out it rubbing and do i need to roll the front and rear fenders.

 

Depending on how much of a drop you have, rolling the fenders would not be a bad idea. I would go with 225/40/18 in the front and 245 or 255/35/18 in the rear.

 

I don't rub with mine, unless I'm corning rather hard, or if I hit a deep pot holl.

I'm lowered on pss9's (not slammed) and using 225/40/18 and 255/35/18

 

I just wanna play it safe. As per tire rack's configuration. They want you to run 215/40/18 with my offset, and 255 or 265/35/18. I'm gonna go that route. Also roll my fenders.