Hi all,

I am new to this forum. I just purchased a 1999 Eldorado with ~60k miles. The car did not come with the factory wheels, but some aftermarket 18" wheels. It seems to be very rough going over speed bumps - I have to go very slow to avoid a big thump. I know that is the purpose of speed bumps, but now I need to go unusally slow. I am wondering if this could be caused by the oversized wheels or if it is a suspension problem. Any ideas? Thanks in advance for any help...

John.