Just want to re-clarify, your not lowered and the rear tire is scraping on the fender liner for sure. By now there should be marks as to where its scraping, which part of the liner is it hitting? Would a wheel spacer fix the issue?

 

Yea, so I'm not lowered, aftermarket set up, no tire wear probably because it only happens when I hit only certain bad bumps on the road. Unless my dealership is full of sh** then I'm going to take their word and say its because of my tired hitting the fender lining.

I still need to find or buy spacers, not sure where to look first but definitely going to try that out. The dealership didn't want to offer any advice as to what I could do other than "put your stock set up back on". I really do love the wheels so I maybe have to look for a shop that can help me with it.

 

Is the sound from the lower back? or does it sound like it is right above your head? if it is right above your head, it is probably the sun roof (if you have one) tracks. I stumbled upon a thread here describing exactly my sound. Mine is a clunk and pop from the roof right behind my head. I thought it was the sway bar links or suspension but the sound would have been coming from under me in the rear.

 

My car has a knocking sound coming from the back too... its weird cause it doesn't do it every time or on every bump, its like it happens when the weight of the car is shifted.

Oh yeah my car is completely stock, no suspension mods or after market wheels

 

My car has a knocking sound coming from the back too... its weird cause it doesn't do it every time or on every bump, its like it happens when the weight of the car is shifted.

Oh yeah my car is completely stock, no suspension mods or after market wheels

 

When i went from 17" to 19" the rears rubbed on bumps. Had the fenders rolled, No more noise.

 

i DONT THINK IS THE TIRES... IM ON STOCK 18'S NOT LOWERED AND MINE DOES THE SAME THING

 

Definitely not right above my head or in the sunroof region. I'm riding on my 17" winters right now and there are no sounds coming from the back only when I put my 19" summers on the scraping noises come back. Its most definitely something with my tires and wheels.