My 2011 ISF is on kw coils with 20x9 fronts and 20x10.5 rears. I'm rubbing on any normal turn on the fronts and when I hit slopes in the road it rubs on the rears. Is this because I'm possibly sitting too low or are my tires too big? I believe the tires are 255 fronts and 285 or 295 rears.

 

Hmmm, where to start? Can you provide a few pics of your car giving a good visual representation of fender clearance? Do you know the offsets of your wheels? What ride height is your car set at? What exact tire sizes are you running? This might allow folks here to help you figure out your issues and possible fixes.

 

 

I purchased the car as is and I believe the coils are at standard settings from the box. I can get the exact tire sizes when I get home from work. I called a shop and they said they can adjust the coils for $20 each side.

 

Raising the coilovers would be the easiest fix. The only way you can get away without rubbing that low is by having the proper offsets on your wheels (or lots of camber) and most aftermarket wheels are too aggressive for stock-like fitment. Many prefer this though and are going for a "hella flush" look instead of giving their vehicle a performance advantage with their modifications. Hopefully raising the rear a little and the front even more will solve your problems. I'm sure the fenders are already rolled, but if you're still rubbing you can see if they can be rolled further. Past that you would have to address the real issue...wheels with too aggressive an offset. You can always run a narrower tire, but what's the fun in that?

 

thx for the advice. I think I will go ahead and lift it a bit since I'm more of a performance over looks kinda guy anyways. Yes the fenders are rolled and I just found out the tires started rubbing a lot more after the rr racing lca bushing was added. Im also considering trading for some 19s if that would solve the issue. Without sacrificing tire width.

 

The OP never stated the aspect ratio. The tires may simply be to tall. Can't see how the RR racing USRS bushings could be the cause of any rubbing.

Lou

 

whats up lou. I believe they are 30 in the rear and front. Id have to go check downstairs to verify.

 

^^^^If that's true, your rear tires are 1" in OD larger than stock, IOW, too tall. The front tires are the correct OD. Even though the ISF uses staggered tires, the OD of the front and rear is the same at 26". Have you gone downstairs yet

And knowing the Offset is important.

Lou

 

Didn't the OE wheels and tires come with the sale? I would throw those on for the time being if you want the pleasure of driving your newly purchased F around, minus having to worry about dips in the road and/or damage to tires you may be looking to sell soon.

 

correct rear tires are 285/30/20 and fronts are 255/30/20
do i need 285 /25/20 on the rear?

 

^^^^295/25/20 would be closer to stock OD - 25.8", and will give you a "bit" more side wall. If your offset isn't to wild, that should work fine. Glad to see you made it downstairs

Lou