Hey guys i just put a set of 17x9 sport max 962 wheels on my formula and there rubbing. Its not as worse as ive seen on some cars but it really bugs me. The has stock springs but the car has a 325,000km on it so the spring look like there down an inch from most other stock cars. Will getting stiffer rear springs help the rubbing or will i still have to invest in getting my fenders rolled?

 

What is the backspace and offset of the wheels? That could have alot to do with your problem. If it is the springs, you can usually pick up a low mileage set off the for sale section for cheap.

 

not sure what the spacing is on them but they just rub and are hardly take much rubber off the tire. not like its digging into the tire like most problems. thats why i asked if getting stock height springs to bring it back up rather then saggy like it is now with the high kms. so im thinkin stock height springs but a bit more stiffer.

anyone have any recomendations for stiffer stock height springs?

 

Hey dude!

Those rims must have a really shallow back-spacing to them if the wheels are rubbing on the outside?! Considering they're only 9" wide, you'd think they should clear fine on both the inside & outsides?!

Anywho, if you want to ditch those high-miler springs for something LOW-mileage, you can have my stock springs with only ~115k vs. ~325k!

 

The table I found for the wheels lists the 4th Gen F-Body application as 35mm offset. That moves the tires toward the outside of the fender, leaving them about 1/10th-inch from where the 17x11 50mm wheels sit. Could cause a problem with the fender lip. Are the tires rubbing on both sides, or only on one side?

Since many people lower their cars with the 17x11 wheels with minimal problems, it doesn't seem like a 1" sag should be causing the problem. However, if the panhard rod bushings are worn badly or cracked, its possible the body is moving excessively side-to-side over the rear axle.

You need to examine the complete rear suspension, first verifying that the body is centered correctly over the rear axle, then checking to see if pushing sideways on the rear fender causes the body to move excessively. Check the panhard rod bushing for wear. Check the rod itself to see if it is bent. Check the sway bar bushings, because worn sway bar bushings can allow excessive body roll in corners, and that can cause the fender lips to contact the tires, with the small offset wheels.

Always good to check the offset and back-spacing on the wheels before you buy them.

 

I was just going to say is it rubbing on one side or both? if just one side I would examine the panhard rod