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I wonder if anybody has tried putting Racing compound tires in the front and street tires in the back for an autocross race... In therory, that would get rid of a lot of understeer. Just a crazy idea that came up today...

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I would try to stay away from mixing tires for normal driving. But for racing, I will let the moderator of this forum handle that. A friend of mine has a Neon with 4 different tires on it. A few problems, 1) The car vibrates pertty bad because some tires are performance, others are all season/winter, as well as one is bald and another is brand new. Your tires would wear unevenly depending how you drive and may affect the handling depending if you have, lets say one expensive tire and one cheap tire.

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I would strongly advise against mixing tires. When I had my stock 13" rims I blew one and went down and bought a Yokohama Avid T-4 and put it on with my Kumho Ecstas.

That was the worst mistake I ever made for handling. The tire was on my right side, and if I even thought of tapping the break in a turn my car would get sideways. Also, once I got four matching treads on I could take corners A LOT faster than previously.

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Been there done that! Had Kumho Ecsta 712 on the front and the slipery stock Michelins on the rear. The end result was very sloppy and unpredictable car...especially during an autocross. It's best to get a nice set of four and tune out that understeer with various suspension components (ie struts, sways, tire pressure, etc) You'd be surprised how neutral you can make that car handle after a while.

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To correct the understeer try upgrading your sway bars. You won't believe the difference it makes.

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yah, i would definately do what 4doorgl says, get some great tires, then work your suspension around them

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I've seen someone do this at an autocross once. It was done as a last resort with a car that he was having some serious tuning problems with. I wouldn't suggest it.

This falls under the same catagory as using less than optimal tire pressure or camber settings to tune steering. It should only be done in a pinch at the track as a last resort. You'll get much better traction with a properly tuned chassis with matching tires. You should concentrate on manipulating body roll.

And it would create oversteer not understeer.


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I have mixed.. frount diff from back.. causes crazy **** at highway speeds... sucks bad.. getting new tires tommorrow.


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theres this eclipse over by me that has 17's in the back and 15's in the front..what's up with that? <img src=/images/forums/snitz/oogle.gif width=15 height=15 border=0> Would this actually DO anything good for him? <img src=/images/forums/snitz/oogle.gif width=15 height=15 border=0>


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Actually it would do the opposite. It looks cool to some people I suppose bad has really bad effects on a car.


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That's just plain gay...(the two sizes of rims)lol And I don't mean homosexual. Where I'm from we'd call that "afro-engineering"<img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0>


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