ok i got new rims and tires about 2 weeks ago and i am starting to feel between the 20mph-35mph like if my car is jumping, like if you had something on the tire sticking out i went back to the place where i bought them and they said that everything is ok that is balanced and everything but the car keeps jumping suggestions plz

 

Busted belt in the tire?

 

When you took them back did they remove the wheels and tires again?

 

i dont know

 

does it get worse? You may want to check and make sure all the lug nuts are tight.

 

some streets it does that some other it does not its weird

 

That happened to me at first too. In fact sometimes when I turn my wheel jerks. It's not the car jumping but rather the wheel jerking. I have no idea why this happens but i'd like to know why also. I went from 15in to 17in.

 

If you have bad shocks then you will notice wheel bounce more w/new tires esp. if they are bigger than stock...

 

thanks

 

one question.. do you notice this wierd jumping when changing gears?

 

Bad shock not doing it's job, not dampening wheel bounce or hopping duration. "17's amplify the wheel dynamics and affect reverse torque on steering wheel from cruising wheel bounce not corrected by strut tower...
Also have alignement checked w/ new wheel/tires!