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Re: How much faster are racing slicks?

To: Matthew Rehrer <mrehrer@rehrer.com>
Subject: Re: How much faster are racing slicks?
From: james creasy <jcreasy@perforce.com>
Date: Thu, 21 Apr 2005 11:00:02 -0700
isnt this another way of saying the 710's rock?

i saw the miatas pick up over a second on 710's versus victoracers.  my 
car however, lost about 2 seconds on 710's over ecstas.  go figure. 

james
OSP - Obviously Slicks Preferred

Matthew Rehrer wrote:

>If I am reading this correctly this is a little over a second on
>a 60sec time.  That is a bigger difference than I would have
>guessed.  What makes slicks so much faster?  I have trouble
>believing its the 2 grooves in DOT tires.  My only guess would be
>construction and by extension weight/rotational inertia...
>
>Interesting info...
>
>Quoting Richard Urschel <osp13@mybluelight.com>:
>
>  
>
>>In 1998 I measured a 2.1% reduction in comparative times between new Hoosier
>>Autocrossers (Bias-ply R tires) and Hoosier bias-ply slicks. This past
>>weekend I measured 2.4% reduction between new Hoosier Autocrossers and
>>Goodyear bias-ply slicks.






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