Any way to stop tire rub while turning?
#1
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Any way to stop tire rub while turning?
I have 295/35/18's in the back and if I corner hard then I can hear the tire rubbing but during normal driving there seems to be a good bit of clearance on each side. Is there anything I can buy to stiffen it up some? I already have Spohn PH Bar, LCA's and a UMI TA. Would upgrading the sway bar help this? If not, then it's time for more of the BFH mod lol Thanks guys
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You may also be suffering from spring sag, which is what they do when they get old and have some miles on them. You could always do like the auto cross guys and pump the tires up to 50 psi or so to keep the tires from rolling over on the sidewalls, but it won't ride very good.
#6
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And yeah, no need to hit the car with a hammer just yet. First try getting the backspacing right with the appropriate sized spacer. You may also need to shift the rear slightly with that PHR.
Doing both has shown only minimal rubbing for me even when loaded up in a corner on the bumpiest of surfaces while running an even wider tire (315s).
Last edited by Ironhead; 05-13-2010 at 03:57 PM.
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#7
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You need to determine where it's rubbing.
A PHB doesn't stop the body and axle from moving relative to each other. In fact on a lowered car, you generally want the PHB setup a little "crooked" to counter how the body moves when you drive the car.... that's because a PHB makes the body move in an arcing motion (this is what Watts links stop from happening).
A bigger swaybar won't help, neither with changing control arms. The rubbing is the body moving and the tire contacting it. The bigger the wheel/tire the more this happens as there is less "wiggle room".
A PHB doesn't stop the body and axle from moving relative to each other. In fact on a lowered car, you generally want the PHB setup a little "crooked" to counter how the body moves when you drive the car.... that's because a PHB makes the body move in an arcing motion (this is what Watts links stop from happening).
A bigger swaybar won't help, neither with changing control arms. The rubbing is the body moving and the tire contacting it. The bigger the wheel/tire the more this happens as there is less "wiggle room".
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Well its rubbing just above where the tire meets the wheel on the inside. It's maybe a 1/4 inch up on the tire. With the wheel off there is a little part of the wheel well that's like a bump outwards if that makes sense and imfairly positive that's where its hitting. I measured and the wheels are centered with the ph bar. So Sam are you saying a watts link would help?
#9
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Once again, that is (at the very least) contributing to your problem.
It's possible that the problem will disappear entirely once you "uncenter" the rear. Take a moment to think about how the rear axle moves. Is it straight up and down or does it move in an arc? Adjust accordingly.
It's possible that the problem will disappear entirely once you "uncenter" the rear. Take a moment to think about how the rear axle moves. Is it straight up and down or does it move in an arc? Adjust accordingly.
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What do you mean? the ph bar controls how far left or right the axle is correct? I used string on the outside of the body to make sure the body is centered above the wheels. It rubs equally on both sidrs so adjusting the ph bar will just make it worse on one side and better on the other
#13
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If it rubs equally on both sides, adjusting the PHB won't help, you are correct. A Watts link can help as it eliminates more movement. When I went to a Watts vs a PHB, I was able to take 5/16" of spacer out of *both* rear wheels that I needed when I had a race (double rod-ended) PHB--that's how much less lateral movement there is.
Bottom line, you either need to space the wheels out more, run a narrower tire--or both, or look at keeping the axle/body relationship more in check.
Bottom line, you either need to space the wheels out more, run a narrower tire--or both, or look at keeping the axle/body relationship more in check.
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Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
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2023 UMI King of the Mountain Champion
#14
Launching!
What do you mean? the ph bar controls how far left or right the axle is correct? I used string on the outside of the body to make sure the body is centered above the wheels. It rubs equally on both sidrs so adjusting the ph bar will just make it worse on one side and better on the other
Once upon a time I ran 1/2" spacers on all four corners (my current wheels only need an 1/8" spacer on the rear)
No issues whatsoever despite running the tires pictured above.
Furthermore...
Sammy ran spacers until going to a Watts link in the Camaro.
Many 3rd gen cars (mine included) came from the factory with 1/8" spacers on the rear.