Flat Tire Feel @ 50mph+

[LouisianaZJ]

You know when you have a flat tire or a tire low on air, you kinda hear/feel a thumping noise from the tire. Ive been getting the same thing recently from the rear end I think once I get over 45-50mph on the highway.

All tires are at 30psi, and were factory balanced 4,000 miles ago when I bought it.

 

[mrpositraction]

Did you take a chunk out of your tire, bust a belt (if you have them). Some people say you should get tire balanced every oil change, normal people would not have the time or money to do this, I work at Hunter Engineering so I do it. But I am not normal.

 

[UVBNHAD]

You haven't locked up the brakes or run over something lately have you? It sounds like you may have flatspotted your tires. Do a few decent burnouts and see if that reduces the vibration.

 

[LouisianaZJ]

i did get a nail in one of the tires which I got patched and re-balanced.

The car sat on the dealer lot for 9 months before I picked it up, which might have hurt something I guess.

I'm bringing in the Gt for some other warranty work (warped brake rotors) soon so I sort of want to give them something to check.