Kevin,
I seen to have a similar issues on 265 45 16 Kumbos. My car in not quite as
light, but is still fairly light at 2200lbs. I have had the same problem
trying to get the tires to stick. I suspect it is my setup, but I had to
run just below 20psi to get the tires to stick, but they corded the edges
after 4 events.
The tires I got were new but 2.5 years old from storage. Are you tires new
, or older models like mine?
I wonder if they may need a bit more weight on the tires to get a good
contact patch.
keep us updated on your progress.
David Borden
-----Original Message-----
From: KWall73108@aol.com <KWall73108@aol.com>
To: autox@autox.team.net <autox@autox.team.net>
Date: Tuesday, May 16, 2000 7:00 AM
Subject: Tire analysis and question
>From last weekends testing 265/45/16 radial Kuhmos were three seconds
slower
>than 11.5" bias ply slicks on the same car on a fifty second course.
Using
>the winning 98 Nationals ASP and AP times as a reference, the DOTs should
>have been about a second slower than the slicks.
>Unless the Kuhmo pressure is dropped in the sub twenty psi range the whole
>contact patch isn't usable given the car's 1700 lb weight. However, the
>Kuhmo performance drops drastically with these low pressures unlike the
slick
>due to sidewall characteristics.
>Would a 315/35/17 radial perform better than a 265/45/16 radial at a sub
>twenty psi since it has less side wall to distort?
>
>Kevin Wallace
>
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