Just put the c5 wheels on the z28 and I notice a slight vibration when I braking 20 down to 10mph for a stoplight. I can understand why I would get a vibration at high speed due to an imbalance but what could this be from?

I also get a pretty bad vibration above 70mph.

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What year is your car (hard to believe someone could be here 8 years and still not have a signature with that useful info)? Did you check the hub holes in the rear wheels to make sure the wheels fit correctly over the rear axle hubs? That can be a problem when putting newer year wheels on 96 and older 4th Gens.

 

Its a 95. Yes the rear wheels fit fine over the rear hubs. I actually had a problem with the last set of wheels but these c5's fit fine.

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