Since I lowered my ride when I go over bigger than normal bumps, I hear some kind of noise...It sounds to me like the tires are rubbing on the plastic inside the fender well, not the fender lip. They're only 225/50/16's, they don't rub lock to lock on the steering, so I am assuming that when I am hitting the bump, it hits the plastic pretty hard.

Sould I just yank out that plastic, or should I sort of disconnect it at the attachment points and then push it up in the fenderwell so I still have protection?? I figue that if I just move it, I'll have problems with things getting really dirty and wet.

What other problems could this be?
Keep in mind I just did a full suspension rebuild: Bushings/springs/balljoints
I had it aligned and had them check everything and they said it was good...except the steering linkages had some play in them, my idler arm mostly. I can't feel it on the street when driving, but they said that I need to replace it soon.
Could this be the noise?
Or is it the tires? sound kindla like a cross between a creek and a clunk.

 

Your spring rate are possibly on the lower side to be running your car at the ride height you have it- higher rate or # springs will help to minimize suspension travel.

And definately a good set of roadrace shocks would help. Shocks with a high compesion and rebound settings like Koni's and Bilsteins will also dampen and minimize suspension travel.

Basic fact is you are bottoming out and you shocks and springs are not holding up the weight of your car under the worst circumstances. This is bad on your entire front suspension components- everything will wear of even bend fast.

 

The car is lowered so that the tire to fender clearance is about 1/4 inch. So for the tire to hit the plastic, it only needs to travel like 3 -3 1/2 inchs. The springs have a rate like IROCs or about 550 lbs so that's not the prob. I don't think it's bottoming out, just rubbing the plastic. I do need new shocks though.

 

If its hitting the platic then you have a problem- its called bottoming out on something that you don't want it to. My car sits about the same height and my suspension travel is about 2" max. I have 800# springs on a V6- you have 550# springs on a V8. You need stiff springs to run that low.

 

I'm not changing the springs, so it's not an option.

What can I do with the plastic so it does not rub to much??

 

I don't know what else to tell you other than be careful. You have some skinnier tires on there now, I'd hate to see if you run some normal size (245/50-16) tires up front and catch a severe bump in a corner- your going to take out your fender lip.

I know you just bought new springs and put them in but another $150 bucks on some heavier springs to run that low will be cheaper than future bent components and damaged body panels.
Just a word of caution.