Back right side is lower Why?

[2000fbodyV6]

I put on some new wheels and tires 275/35ZR18 and every thing was fine. A little while later I noticed the back right tire is closer to the fender than any other tire. When every I go over a slight dip in the road it rubs on the fender. If someone is in the back it will rub on the smallest bump or dip. The back tire is an inch closer to the fender than the rest of the tires and I dont know Why. I took it to the dealership and they said it is still in the specs of GM so they wont fix it. But the back right tire is the only one that rubs. If anybody knows why its sagging to the right side I would appreciate it.

[shortdog273]

I think that's normal on the Fbodies. Someone correct me if i'm wrong. Mine is the same way.

[Predator Bird]

hey Shortdog, i have a question: didn't you say that you cut off some of the coil on your rear driver side spring? my car is lowered and of course the driver side sits up higher. i just wanted to know how much i should cut off, and if i should cut the bottom or top of the spring? let me know what to do b/c i just want to make it even all the way around.