Help!! VMB9's major tire poke

[F1scamp]

Camber doesn't equal excessive tire wear.

Toe does.

Excessive camber causes accelerated tire wear.

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[Aarron_M]

Only in the small way that a smaller area of contact is carrying the weight of the car vs the overall contact patch. And it gives the appearance of increased wear because the rest of the contact patch isn't touching the ground to cause wear.

Toe is the rear culprit of increased wear on tires. Too much inward or outward creates a "dragging" effect.

 

[Sharad]

Only in the small way that a smaller area of contact is carrying the weight of the car vs the overall contact patch. And it gives the appearance of increased wear because the rest of the contact patch isn't touching the ground to cause wear.

Toe is the rear culprit of increased wear on tires. Too much inward or outward creates a "dragging" effect.

Will the inside of the rear tires wear more with the stock alignment, or with an additional 2* of negative camber?

 

[Todd15Fastback]

Will the inside of the rear tires wear more with the stock alignment, or with an additional 2* of negative camber?

I am running -2 camber up front and -2.1 out back. My tires on my car have better wear than my factory alignment on my GTPP.


The toe has to be set right as mentioned before. If you go to a reputable place, you will not have any issues running -2 camber with the right toe. Period. End. Of. Story.

 

[Velgen]

It could be an alignment issue. We have plenty of mustangs running these wheels and with that tire size and haven't had any of them poke. Is the car lowered?

 

[F1scamp]

-2 degrees is technically just out of spec since spec is -1.19 +or-.75 for the rear of a GT. I agree, won't cause much of an accelerated wear, no more than adding weight to the trunk. But to say excessive camber doesn't cause tire wear is wrong.

 

[Sharad]

I am running -2 camber up front and -2.1 out back. My tires on my car have better wear than my factory alignment on my GTPP.


The toe has to be set right as mentioned before. If you go to a reputable place, you will not have any issues running -2 camber with the right toe. Period. End. Of. Story.

This is what's bad about the internet- you never know who you're talking to, or what their background is. Often times, the person who talks the loudest is interpreted as the person who is right. I've been married for 14 years, so I don't even try to convince anyone I'm right anymore.

However, for the benefit of the OP, I'll point out that there is a difference between "no issues" and "increased wear". To spell it out clearly and concisely- you can run -4* of camber if you want, and the car will drive just fine. (aside from a complete lack of grip because you have contact patches the size of quarters) However, in ten thousand miles when your Street Comps are showing cords on the inside edges and they still look new on the outside edges, you'll still have to replace them (earlier than you should have).

 

[Sharad]

-2 degrees is technically just out of spec since spec is -1.19 +or-.75 for the rear of a GT. I agree, won't cause much of an accelerated wear, no more than adding weight to the trunk. But to say excessive camber doesn't cause tire wear is wrong.

Agreed.

I said "an additional 2* of negative camber" (let's call it -3.5*), but I think Todd was just in the mood to argue.

 

[Sharad]

For conversation's sake, Steve's S550 on VMB9's with 305/35-20 Street Comps and Eibach ProKit:



Same car:

 

[GMB Racing]

Camber will cause uneven tire wear across the tread. It will wear the inside out before the outside but it will not cause excessive wear like toe scrub does

 

[Todd15Fastback]

Agreed.

I said "an additional 2* of negative camber" (let's call it -3.5*), but I think Todd was just in the mood to argue.

Nope, I wasn't. I am not that type of person either in person or on the internet.

I just misread the additional part. No worries. I can admit with I am wrong

 

[Road Dog]

Okay back to the original question the OP had, why the poke on one wheel is greater than the other? Who has the answer for that? It seems to me that before you go making adjustments for the symptom you should know if it might be better to fix the cause.

 

[Sharad]

Okay back to the original question the OP had, why the poke on one wheel is greater than the other? Who has the answer for that? It seems to me that before you go making adjustments for the symptom you should know if it might be better to fix the cause.

When I lowered my car (actually slammed it on coilovers) one side had more camber than the other- About half a degree difference. I'm not sure why, but I can tell you that the camber will make a bigger difference in the poke or tuck than you would think.

If this was my car, I'd shoot for somewhere around -2* negative camber and see if the tires tuck a little and look more even from left to right. This is something that can be done in 10 minutes using hand tools. Magnetic angle finders are a sketchy why to find the camber, but they'll work in a pinch. (and they're cheap)

 

[Burkey]

Is it just me or does the passenger side look like it's running POSITIVE camber?

 

[Need4SpeedMotors]

Have you lowered the car? if yes was the subframe put back up properly if yes, then check your camber if its at 0 thats your issue right there.

The GT PP comes -1.5 factory for every 1" you lower you theoretically gain -.5 degrees of camber so your car should be at -2 degrees and then youll be good.

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