ever since i put on a set of 17 inch wheels on my 97 z28, my steering wheel shakes like i have bad rotors from 50mph and up. going under 50mph its fine though. i had new tires put on with balancing, front end alignment done and it still has shaking problems. not comfortable at all. i did a test and put my stock wheels/tires back on and it rides fine with those... no shaking at all. anyone have any idea whats going on?

 

are the lug nuts tight? if they are aluminum wheels,u need to tighten them down,hit them on the sidewall a couple times to make sure they are seated and then go drive it. come back and re-torque the wheels again.

what kind of wheels and tires are they?

i know a mechanic friend of my dad told us that Goodyear have always had problems with their tires being balanced,just by themselves,so of course u can never get the tire/wheel combo balanced properly.

hope that helps