Why Does car feel like it will shake itself apart anywhere above 65 mph???? I never really noticed it before. Only thing that changed is I had a flat tire fixed and had all four rotated. They were all rebalanced too, and I checked the air pressure. So what gives???? I can't stand these speed wobbles...I am embarassed to drive above 65. Anybody have any ideas???

 

Your flat probably is now separated.... very common problem, air leaks through the puncture and gets between the treads and splits them apart, it's especially bad if the "repair" was done with a plug instead of a patch, a plug has a near 100% chance of destroying the tire that way.

Park the car and get out and run your hand around the tread of all 4 tires, you'll probably be able to feel a lump somewhere.

------------------
"So many Mustangs, so little time..."
ICON Motorsports

 

Will I be able to tell by checking to see if the air pressure drops? I know they used a plug...the tires are under warranty so they fix it for free. Any ways..I'll take it back and raise hell if this is really the problem...can any one else confirm this?

 

Is it possible you may have bent a rim.

------------------
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER, NO CAT
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
2:73 GEARS
Rebuilt 700R4, with manual valve body
B&M Megashifter, 5" Autometer Tach w/shift lite
Soon to be installed
3:73 Richmond Gears and 3" Hooker Aero Chamber
Corvette Servo & .500 boost valve
15.61@ 95.2mph G-Teched, 1-2 shift slippage, and just replaced a burnt plug wire
"There is nothing more addicting than speed"