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Re: What tires were on STS cars in Topeka?

To: "Moore, John" <jmoore@opentv.com>
Subject: Re: What tires were on STS cars in Topeka?
From: Brian Berryhill <brianberryhill@flashmail.com>
Date: Fri, 22 Sep 2000 23:43:21 -0500
> I was running on RE71's with 205/50-15's on front and 195/50-15's on
> the rear since it is the most that will fit my SE-R without sticking out

Looking at the RE71 tech page, the 205's are 7.5" wide at the tread, 8.0"
overall, the 195's are 7.2" and 7.7", respectively.  It's really odd that
the 225/55r16 is 7.3" at the tread, 225/50r16 (my size) is 8.6" at the
tread.
http://www.bridgestone-usa.com/products/RE71tech.htm

> past the fenders. I know that John and Debbie Fessler ran on Pirelli PZero
> Asymetricos in 205/50-15 on thier integra. Several cars had 215/40-16 or
> 205/40-16 Yokohama A520's. The top 2 cars both appeared to be on 225 width

The A520, from what I've heard, is a really good autox tire.  I didn't
really consider them because their 225 versions were a little skinnier...
like 8.3" at the tread.
http://www.yokohamatire.com/04b2c.html
The AVS Sport is 7.9" in my size:
http://www.yokohamatire.com/04b2a.html

> tires, one on Kumho's (Eric) and one on BFG Gforce T/A KD's. One of the
> Probes was on 225 width Bridgestone Pole position S-02's. The Renee Eady
car
> was Michelin sponsored so it was on 205/50-15 Michelin Pilot MXX3's. A few
> others ran on the newer Michelin Pilot Sport that replaces the MXX3.

Eeeek... expensive tires!  My friend went from Pilot SX GT's on his 99 Miata
to RE71's and he seems to have liked the transition.

> Can you tell I was looking? I am really not happy with the
> performance of the RE71's in hot weather and on tigher courses. They seem
to
> heat up way too quickly and become unpredictable. I have seen as much as a
4
> psi pressure increase during runs of tight courses on concrete in really
hot
> weather. The north course at nationals on Thurs. saw a 3 psi increase in
the
> front and a 2 psi increase in the rear after only 1 run in low 80 degree
> heat. They also have a bit of a soft sidewall compared to many of the
newer
> tires.

As for the pressure increase, seems like every tire I've had creeps up like
that after a run, but I usually compensate by adjsting my pressures while my
tires are hot right as soon as I arrive to the course.

> Bridgestone RE71, Bridgestone RE730 and the Yokohama A520 are just
slightly
> less "grippy" again, but the RE71's have also been discontinued, and the

I considered getting the RE730's, but the treadwear is 280 vs the RE71's
140.  My last tires were a 300 treadwear, and I hated them.  And, I know
that you can't compare treadwear numbers across manufacturers, but I didn't
like Goodyear's 300 rating.

> is the Kumho Ecsta 712's and the Yokohama AVS Intermediates which come in
> barely right behind these, and you cant beat either on price, unless you
run

The Kumho's have that high treadwear thing too, so since they're new, I'm
waiting to see how other people feel about them before I consider getting a
set.

> Personally, I am going to try the RE730's first and see how they
> feel since the test results from the Tire Rack and other sources rate
thier
> grip, response and handling to be a bit better than the Kumho's. If they
> aren't the right tire, then I am going to try the Kumho's.

Sounds like a good idea... please let us know how the RE730's go.  If I
don't like my RE71's, next time I might go with Dunlops.

I'd like to get some lightweight 15x7.5 rims for autox.

Brian

--
Brian Berryhill
http://www.angelfire.com/ms/brianberryhill/





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