Autocrossing & Roadracing Suspension Setup for Track Corvettes, Camber/Caster Adjustments, R-Compound Tires, Race Slicks, Tips on Driving Technique, Events, Results
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After two track years...

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Old 03-10-2009, 10:24 PM
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bgx12
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Default After two track years...

I finally purchased my first set of R compounds. 275 frt 315 r NT-01's! Running VIR South next weekend.

WooHoo!!!
Old 03-11-2009, 01:18 AM
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WBHighwind
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You will be amazed at the new level of grip. It always boggles my mind when I switch back and forth. Have fun!
Old 03-11-2009, 08:17 AM
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CHJ In Virginia
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You will be surprised at the additional grip available - 5-6 MPH faster around Oak Tree. Be sure that you get as much negative camber as your car will allow or you will eat the outside of those tires in short order. Pressure is also very important.
Old 03-11-2009, 09:56 AM
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spazegun2213
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congrats!!! I think you'll love them!
Old 03-13-2009, 08:10 AM
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bgx12
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with the stock set up, how much negative camber can I get? I have heard -2.5 deg for both front and back, but I was not sure.
Old 03-13-2009, 09:10 AM
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NewFoundPower
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Congrats! I'm looking forward to that day myself but I'm not quite there yet. What was the key to knowing you're ready? I assume you trailer the car to the track? I still have to drive mine, which is a big contributing factor.


Originally Posted by WBHighwind
You will be amazed at the new level of grip. It always boggles my mind when I switch back and forth. Have fun!
Out of curiosity, why/when do you switch back and forth? Rain?
Old 03-13-2009, 12:11 PM
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gkmccready
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Originally Posted by bgx12
with the stock set up, how much negative camber can I get? I have heard -2.5 deg for both front and back, but I was not sure.
If you drive the car on the street you may not want max negative camber. Hook up with a shop you trust and tell them what you're doing with the car and the mix of driving you're doing. I don't think you'll want that much in the rear...
Old 03-13-2009, 02:54 PM
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TmillerC5
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I used this as my guide and it has work pretty well for me.

http://www.vbandp.com/instructions/h...ruct/align.htm

You will love the grip with the R type tires.
Tim
Old 03-13-2009, 03:44 PM
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MungoZ06
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St. Jude Donor '10-'11
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OK ... I guess it's 275/40/17 front @ 25.55 diam and 318/30/18 @ 25.35 diam (smaller than front?)
I assume with the negative difference Front to Rear - you run with "all off"? ... or does either svc AH or TC warning come on?
That's why I stayed away from the NT01's ...
NFP ... I have driven to the track on the Nitto 555RII (in fact ... because I do so little street driving, except to and from events, that's what I use for street tires at this time!)
Old 03-13-2009, 04:02 PM
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WONIT84
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I think these are 17" tire sizes
Old 03-13-2009, 04:15 PM
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MungoZ06
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St. Jude Donor '10-'11
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Originally Posted by WONIT84
I think these are 17" tire sizes
Well, that would make them closer - 315/35/17 are 25.43 diam - still smaller than the fronts ...
Old 03-13-2009, 05:29 PM
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95jersey
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You are going to be faster because you waited. Up to now, you've had to use skill instead of tire to driver faster. Learning on street tires for a couple years allows you to learn from your mistakes and stay out of trouble.

R compounds will hide novice mistakes and give them the impression grip is available at all times, which usually gets them into trouble or makes them slower overall as they "overdrive" the tire. Don't "overdrive" your r compounds when you get them just because they have a lot of grip, try to drive the way you did with street tires, just a bit faster.
Old 03-13-2009, 08:01 PM
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FredSM
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Originally Posted by 95jersey
You are going to be faster because you waited. Up to now, you've had to use skill instead of tire to driver faster. Learning on street tires for a couple years allows you to learn from your mistakes and stay out of trouble.
I've seen an awful lot of novice and intermediate drivers running R-compounds. I personally think it's harder, but not impossible, to learn that way. I've seen lots of cars all over the track, learning all kinds of bad habits at speeds where the driver was no longer learning, or so it seemed. Those folks don't tend to get any faster. Slippery rubber forces you to learn better control, better lines, etc. while still at speeds that still allow you to think. Fast is a by-product. Or maybe I'm wrong.

FM
Old 03-13-2009, 09:06 PM
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Old 03-14-2009, 09:26 AM
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bgx12
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Originally Posted by MungoZ06
OK ... I guess it's 275/40/17 front @ 25.55 diam and 318/30/18 @ 25.35 diam (smaller than front?)
I assume with the negative difference Front to Rear - you run with "all off"? ... or does either svc AH or TC warning come on?
That's why I stayed away from the NT01's ...
NFP ... I have driven to the track on the Nitto 555RII (in fact ... because I do so little street driving, except to and from events, that's what I use for street tires at this time!)
I do run with all traction control off. I will not drive to the track with my NT-01's on. I will either trailer the car or put my tires on a friends trailer and drive with my Kuhmo MX's which I will use if it rains.

I am like you, I do not drive on the street much.

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