What's the biggest tire I can tuck into an 04?
11-17-2014, 11:41 AM
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What's the biggest tire I can tuck into an 04? I currently have 17 stocks with what seems to be a lowerd suspension...I'm not sure how low I am but it has a nice stance. I want to put some 15's or 16's in the back with some drag tires...but I was wondering what the widest wheel I can go with? Also what rims would you guys recommend? Thanks
11-18-2014, 07:59 AM
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You can run a 275 out back on a 9.5" wheel with an offset in the 50-55 range, which is about 7.5" backspacing. For my drag setup, I run a set of C4 corvette ZR-1 fronts, which are 17x9.5, 56 offset and they fit perfectly with a 275 MT drag radial. There are some 16" f-body wheels that will work. If you want to go 15, Weld has some nice options.
11-18-2014, 11:44 AM
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Will I need to do some fender work? Or will they fit right on? Also will I have any issues fitting the 15's on the rear? Won't have any clearance issues with the brakes or calipers?
11-18-2014, 12:10 PM
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Probably will depend on the brand of wheel...
11-18-2014, 01:31 PM
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The GTO squats a lot. I f you run a taller tire than stock you will have to roll fenders. What are you wanting to accomplish with a 15" rim/tire combo? If u have someone that knows how to roll the inner fenders you will never know its been done.. Not really going to hurt anything..
I had air bags and QA1's on my car on the rear. You can adjust air pressure and adjust shocks to keep the ride quality just at the track you wanna stiffen it up a bit to keep from squatting so much... Also helps eliminate wheel hop.
I had air bags and QA1's on my car on the rear. You can adjust air pressure and adjust shocks to keep the ride quality just at the track you wanna stiffen it up a bit to keep from squatting so much... Also helps eliminate wheel hop.
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11-19-2014, 09:16 AM
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To get any decent tire width you need to roll the fenders and maybe even massage the inner fender a bit. Wheel offset (the rim is the edge of the wheel) and width affect tire size a lot. I got 285s on stock 17"s widened to 9". That makes about a 56mm offset. I can squat to the bump stops without rub.
One little additional tweak that eliminated any contact was replacing the inner and outer control arm bushings with poly. The rear control arm "fork" is what the wheel spindle is attached to and it's held in position and pivots on those two points. Excessive play from the soft, void filled rubber bushings can cause the control arm to move outside of its intended arc. They also help keep your wheel camber in spec so you have good tire patch contact with the road and good tire wear.
One little additional tweak that eliminated any contact was replacing the inner and outer control arm bushings with poly. The rear control arm "fork" is what the wheel spindle is attached to and it's held in position and pivots on those two points. Excessive play from the soft, void filled rubber bushings can cause the control arm to move outside of its intended arc. They also help keep your wheel camber in spec so you have good tire patch contact with the road and good tire wear.
11-19-2014, 12:16 PM
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To get any decent tire width you need to roll the fenders and maybe even massage the inner fender a bit. Wheel offset (the rim is the edge of the wheel) and width affect tire size a lot. I got 285s on stock 17"s widened to 9". That makes about a 56mm offset. I can squat to the bump stops without rub.
One little additional tweak that eliminated any contact was replacing the inner and outer control arm bushings with poly. The rear control arm "fork" is what the wheel spindle is attached to and it's held in position and pivots on those two points. Excessive play from the soft, void filled rubber bushings can cause the control arm to move outside of its intended arc. They also help keep your wheel camber in spec so you have good tire patch contact with the road and good tire wear.
One little additional tweak that eliminated any contact was replacing the inner and outer control arm bushings with poly. The rear control arm "fork" is what the wheel spindle is attached to and it's held in position and pivots on those two points. Excessive play from the soft, void filled rubber bushings can cause the control arm to move outside of its intended arc. They also help keep your wheel camber in spec so you have good tire patch contact with the road and good tire wear.
