I bought 370z rims and put them on my car... they look astonishing however my rear tires rub over humps and bumps... what to do
If I stiffen up the rear with an RSB will that help... trying to avoid new tires....

Fronts: 225/50/18
Rear: 245/45/18

Gonna get pics up soon!

 

get 235's for the rear, I don't think a rear sway bar will help but I could be wrong

 

A rsb will only (read: might) help your situation if only one side of the car is going over the bumps/humps.. You should be able to get away with that size tire if you roll the fenders. That's all it took for me to run 245/40/19 on my g35 rays..

 

RSB stiffens up the rear, but like said above it won't help prevent tire rub. Gotta flare those fenders out a bit braa.

You're saying they rub on bumps...which is when your suspension comes down...RSB won't help that.

 

I'm going to grab 235/45/18, but my tire guy said grab 225/45/18... however myke on nycmaximas.org has same rims and car w 235 and never rubs so I'm gonna go with a wider tire, and gonna grab an rsb just for handling purposes

 

I wanted to do same thing now im curious post some pics dude