I have a vibration in the foot pedal when i'm driving on regular roads and highway. When i'm driving on a new paved road the black asphalt the car is very smooth. Since ive changed from the stock tires ive had this problem. I have directional tires on my stock wheels and directional tires different brand on my 19's. They both act the same way. Can anyone think of something that would cause the change on the way it rides. I have new shocks and struts. I was thinking maybe its the sway bar or strut mounts.

 

what is a foot pedal?

 

what kind of vibration are you talking about. is it little? a lot? and define that. can a passenger feel it? or is it just in the pedal.

with a bigger wheel, and a smaller tire, you're going to pick up some more road vibrations. does the car otherwise feel ok?

 

mis matched tires maybe.. how mismatched?? cause different tread patterns respond to road condition's different. ie a summer tire with ALOT of grip will make ALOT more road noise than any other type of tire.. unless it's a mud terrain/mud snow tire.. then it will make ALOT of road noise..

 

Brake pedal? Warped rotors
When turning? Bearing
WHen driving straight? Chopped tires/broken belt.

 

My winter tires give me a high frequency vibration I can feel in the pedals and steering wheel because they have some wicked lugs on them. However, its worth it for the excellent traction. Anyways, it sounds like its probably your tires, especially if they're mismatched and/or a larger size like 18's or 19's.

 

I meant the throttle pedal. Both sets of tires are brand new. They are directional and they are m + s tires. I have the cooper zeon zpt and general exclaim uhp on my 19's. They are all the same tires not mismatched.