Since it happens on two difff. sets of tires, possibly an alignment issue.

 

yeah i think i'm gonna setup an alignment with a high speed balance soon

 

+1

Unless he stored his stockers with the treads touching a flat surface, I doubt he would have had flat-spots on his stockers too.

 

the stockers were stored with the threads touching a flat surface.

 

As an example: I sell Hondas. Some of the cars will sit on the lot for a long time causing major flat spots. Especially in the AZ sun. I have seen tires melt to the ground. I am constantly explaining to customers why the car vibrates at high speeds 60 mph+. It fixes itself after a few miles of driving. I would think people who park their car outside in the hot sun would be more prone to flat spots.

 

In that case, totally try to see if you still have the vibration after the flat spots are worked out. Take it out on the highway for a while or something.

No sense in spending money on flat spots.

 

i would say balance your weals

 

well it goes away after a few minutes of driving and the car is kept in a garage but i guess it doesnt matter especially when it gets hot.