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Miscellaneous tire info gleaned from the EV mailing list on the Internet
Thanks to all who contribute to that group!

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Date: Tue, 23 Nov 1993 20:26:19 PST
From: Peter Jacobs <ud077@FREENET.VICTORIA.BC.CA>
To: Multiple recipients of list EV <EV%SJSUVM1.BITNET@cmsa.Berkeley.EDU>
Subject: Low rolling resistance tires.

FYI, here's a re-post of the Goodyear low rolling
resistance tire sizes and code numbers. Credit for
this info goes to the EAA newsletter, "Curreny EVents".

GOODYEAR TIRES :
PRODUCT CODES FOR LOW ROLLING RESISTANCE TIRES

  Invicta GFE                     Invicta GLR
  P185/70R 14  746-748-647        P165/70R 13  772-564-465
  P195/70R 14  746-827-647        P175/70R 13  772-904-465
  P195/75R 14  746-645-647
  P205/60R 15  746-913-647        Invicta GAL
  P205/65R 15  746-299-647        P185/70R14   779-055-433
  P205/70R 15  746-688-647        P195/75R14   779-854-433
  P205/75R 15  746-727-647        P205/70R14   779-707-433
  P225/75R 15  746-692-647        P205/60R15   779-896-433


--
Peter Jacobs
ud077@freenet.victoria.bc.ca

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Date: Sun, 28 Nov 1993 19:33:44 +0800
From: Karl Fosburg <kfosburg@dhm.com>
To: Multiple recipients of list EV <EV%SJSUVM1.BITNET@cmsa.Berkeley.EDU>
Subject: Re: rolling resistance and traction

FYI:

Yokohama has developed tire specifically for EV's.  The designation is :

165R14-6PR LT.

They have 10% less weight, and 30% less rolling resistance, without
sacraficing performance, according to Yoko.

This was reported in the SAE automotive engineering magazine, November,
1993 issue (pg 19).

karl <kfosburg@dhm.com>

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Date: Wed, 16 Mar 1994 09:56:23 EST
From: James D. Robb <jrobb@CABELL.VCU.EDU>
To: Multiple recipients of list EV <EV%SJSUVM1.BITNET@cmsa.Berkeley.EDU>
Subject: Re: EV Tires

>
> Goodyear Customer Service (800) 321-2136 said their low rolling resistance
> tires for EVs are the "Momentum" series.  They are supposed to be used at
> Phoenix.
>
> Does anyone know about these tires, their specs, availability, etc?
>
> Lee Hart
>       EV Tires
 DU
>

The EV tire engineer rep at Goodyear is Bill Egan phone
(216)-795-2715.

He is helping the high school racing teams on the east coast for
this April's EV Grand Prix 94 at Richmond, VA.

By the way, is there any listing of low rr tires available (by any
manufacturer)?

Jim Robb
Central Virginia EAA
jrobb@cabell.vcu.edu

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Date: Tue, 22 Mar 1994 12:56:00 CST
From: Hart, Lee <lhart@p02.mn10.honeywell.com>
To: Multiple recipients of list EV <EV%SJSUVM1.BITNET@cmsa.Berkeley.EDU>
Subject: Low RR tires

Subject: Low RR tires

>Goodyear Invictas are regular passenger car tires... GLRs are original
>equipment on Hondas...  Consumer's Reports tested them...
>
>David Luneau

Consumer's Reports tested the Goodyear Invicta GL along with a dozen other
all-season tires in their Feb 1992 issue.  Overall it was near the bottom of
the ratings.  RR (rolling resistance) was slightly above average.  The
Michelin XA4, BF Goodrich Advantage, and Firestone FR480 and FR680 were top
rated for RR.

They tested the Goodyear Invicta GS against 9 others in Feb 94.  Again, it
was next to last, and RR was only average.  The best RR in this group were
the Bridgestone Turanza S and BF Goodrich Advantage.

RR was measured by mounting each set on a car, and recording the time it took
to coast 2100 feet from a 40 mph start.

Lee Hart <lhart.p02.mn10.honeywell.com>

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Date: Thu, 24 Mar 1994 01:04:44 EST
From: MR MITCHELL L OATES <RRKR45A@prodigy.com>
To: Multiple recipients of list EV <EV%SJSUVM1.BITNET@cmsa.Berkeley.EDU>
Subject: LOW RR TIRES

I talked with the Solar Car Co. Tech Assistant about a week ago. Invicta
GLR's are original equipment on new cars (Chrysler specifically) and are
the low RR version of the Invicta. The replacement model, which used to be
designated Invicta GFE, is now Invicta GA(L). Both are the same design, the
difference in model numbers being that one is orignal equipment and the
other is aftermarket. The gentleman at Solar Car deals directly with
Goodyear and had the fax from the company in front of him. I've found these
in the Seattle area at Discount Tire Co. for about $70 apiece. Another tire
that has been touted for low RR is the Michelin "Green" tire, model number
MXV4. Michelin claims 35% reduction RR vice 20% for the Invicta. Found
these at the same company as above for about $85 apiece (ouch!). I'm going
to try out a set of the Michelins on an updated Jet Industries Courier
pickup, and I'll try to get some before and after data to see if they make
any difference. My gas car is needing tires also, and I'm going to put a
set of Bridgestone Turanza's on it and see how they do.

    LOW RR TIRES

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