Rear tire rubbing

[TungstenGT]

Took the car out to the strip today, and after making a few passes and swapping the rear tires I noticed a line on the outer side of both tires from them rubbing.
Anybody else have this issue?
Car is a 2012, 275/60/15 m/t et pros with sve 15x10s and 2013 cobra jet springs
I don't think rolling the fenders does anyhin on these cars does it?

 

[blownGTvert]

I run the exact same combo on my 07. No rubbing or fitment issues. Can you confirm where it's making contact? What air pressure in the tires?

 

[stkjock]

Sounds like lots of squat. Car lowered?

 

[TungstenGT]

Car is a 2012, 275/60/15 m/t et pros with sve 15x10s and 2013 cobra jet springs

The cobra jets lowered it 1" in the back (1-1/8" in the front)

They are making contact with the fender lip.
Track was working good, the rear shocks were set to 5 clicks (strange single adjustables) and the car does have some rear squat, however it's what making the car hook for me now
And 17 psi

 

[rcm90]

Mine did this on 325's. Adjust your a/s(target should be 100%) so the rear does not squat and the problem will be gone.
I have 2013 cj springs as well.

 

[05stroker]

Mine did this on 325's. Adjust your a/s(target should be 100%) so the rear does not squat and the problem will be gone.
I have 2013 cj springs as well.

On my 05' I run my rears full stiff and the fronts full soft with my 325 drs with Eibach Pros and D-Specs. 60ft in sig.

 

[psfracer]

On your 15X10 wheels, what is the backspacing you are running?

 

[TungstenGT]

I'm afraid if I adjust the a/s or shocks the car will blow the tires off...
The back spacing is 7.12" I believe (according to late model resto)

 

[rcm90]

Keep a log of all the changes you make, so if it does spin(which it shouldn't) you will be able to go back.

What else is done to the car?

 

[psfracer]

I'm afraid if I adjust the a/s or shocks the car will blow the tires off...
The back spacing is 7.12" I believe (according to late model resto)

The Bogarts I ran had 7.5 inches backspacing. How much room do you have to go to the inside? Sounds like you need a little more backspacing.

 

[rcm90]

My welds are 7.5" backspace as well and the 325's just touched

 

[Department Of Boost]

Bottom line is that the tires shouldn't be, and don't need to rub. Even if it had no springs in it (sitting on bump stops). There is enough room for a S197 to swallow a 12.5" wide/28.5" tall tire with no rubbing if the backspacing is right.

I've put a tire that size on and removed the springs so it was sitting on the bump stops (the bump stops were even trimmed 1") to check.

 

[TungstenGT]

There is barely enough room to get a finger in there. So maybe .5" max
The car has bmr relocation brackets, control arms, steeda adjustable upper and steeda upper bracket.
Motor wise it's boss intake, airaid cai, and a 4300 stall. Have a nitrous system on the car too, however I'm trying to bracket race the car so I've been running it n/a.
The car fell off on my second test hit yesterday, (first time bracket racing this car)
Went 11.90 @ 115 with a 1.67 60' (2900) next test hit I deep staged (trying to get a better light) and it went 12.15 at 114 with a 1.80 60' (3200 da)
So I figured I'd dial it up at a 12.2 (planning to peddle on thebig end)
Deep staged and it went 12.05 at 107 with a 1.75 60' (braking at the end) so I'm thinking the tire run slowed me down on my second hit (plus deep staging)
I'm just wondering if the rubbing is making it inconsitent