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Tire size and car weight with DOT R tires ???

To: autox@autox.team.net, ba-autox@autox.team.net
Subject: Tire size and car weight with DOT R tires ???
From: cobracrosser@jps.net
Date: Thu, 3 Feb 2000 06:44:05 GMT
Have another question for you all..

My car(the FFR Cobra replica) weighs about 2200 wet no driver.  As I stated
before about 400rwhp.  

>From all your advice I am going to order Kumbo tires.  I am pretty sure I am
going to run 17 inch wheels.(unless you all think I should run 16's).

I have heard that you can have too much tire(R compound) for the weight of the
car.  I guess the idea, is if they are too wide, they do not work hard enough
and produce enough heat and therefore dont stick as they should...

I have found that I should be able to run 275 40 17 Kumbos on 17x9 rims on all
4 corners.  They have about a 10.5 inch contact patch. and an 11 inch section
width.

Do you think that is too much tire for the weight of my car?  Should I run the
275 size in the back and step down to a 225, that is almost 2"'s narrower, or
255's that are almost an inch narrower in the front.

Your opinions would be greatly appreciated :-)

Thanks again...

David Borden

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