Hey everyone I picked up a 2000 trans am A4 (wish I could have found a 6 speed) but I bought it in the dead of winter so I took it for a test drive and noticed it had a bit of a shake/vibration depending on speed so I thought ok must be cold tires because it was -30 Celsius out but now it’s plus 30 Celsius and I still have the shake/vibration and now a chirping drivers side rear rotor so here’s a list of parts I’ve thrown at it to try and fix this problem
new rear tires new rear rotor new dorman axle and it still has a chirping rear break caliper and up on jack stands it still looks like a bent axle even with the new one installed and I’ve driven it a bit now I’ve noticed both back tires are wearing a bit on the inside so could it be a bent axle tube? Or what’s going on I’m at whits end trying to figure it out

Yeah my guess is an accident I seen the accident history of the car after I bought it
and ya there was a $12000 accident at one point in its life and another one for 5k so very possible