need suspension upgrades to fix it ?
 

hey guys i have 18's on my 5er and whenever someone sits in the back, when i hit a bump or turn fast it starts to scrape :confused: . it also cuts off a little of rubber. you can peel it off. it only scrapes off the edges of the tires, just a very thin layer wich you can peel off. its nothing big but i wonder why? i dont think 18's are too big. all i think is if i need to upgrade something in my suspension. can you guys help me out?

It's rubbing on the fender edge. I saw you posted elsewhere that you're running 275 tires, that is the reason why they rub.

You can get the rear fenders rolled at some tire shops, search the forum for info.