ok when im driving down a bumpy road, I hear this metallic rattling sound coming from the front right tire. my car is lowered with 17's on, however it made the sound before I had it lowered/rims..just got worse..anyone know what it might be?

 

what car you have, how many miles, when you have the aftermarket stuff on, and what is it, alignment done befroe? any visible damage to the assembly?

 

Worn upper arm assembly, loose pads in the caliper, worn bushing(s) on suspension components.

 

Check the crossmember for missing bolts. Sound like something which happened to a friend's Civic.

 

check for loose heat shields. sounds can sometimes play tricks on you and they arent coming from where you think they are.