Well now every auto manual I have seen in recent years shows the rotation
of radials from front to back only. Not crossed over from side to side.
Also I recall that for a time there were 2 BY THE BOOK recomendations for
rotating tires - one for bias-ply and one for radials. This recomendation
also came from my brother-in-law that worked for years in the tire
industry, for Michelin. Now I also said this may not be true for newer
tires but it was for years!!! Maybe you just got lucky.
Larry
PS Jeff noted that his retailer stated this is not true for tires made in
the last 10 years.
At this exact moment in time 10/20/99 15:34, wizardz@maxinter.net made
the profound statement:
>Hogwash!
>radials can run in either direction!
>I've been rotating mine for years BY THE BOOK which crosses
>over side to side...on LBCs on my 10.5x31 radial truck tires... no problems
>
>Ask Pirelli, Goodyear, Avon, Mich, they'll all tel you the same thing.
>
>
>Paul Tegler
>OBie - 1973 BGT - Daily Driver
>http://www.teglerizer.com/mgstuff/ob_description.htm
>Rat - 1980 Spitfire w/ O/D - in re-hab
>http://www.teglerizer.com/triumphstuff/spit80.htm
>Punkin' - 1978 Spitfire - in Superb Shape!
>http://www.teglerizer.com/triumphstuff/spit78.htm
>Greene - 1972 Round Wheel arch MG Midget in the works
>email: wizardz@toad.net http://www.teglerizer.com
>
>
>-----Original Message-----
>From: Larry Macy <macy@bblmail.psycha.upenn.edu>
>To: Ajhsys@aol.com <Ajhsys@aol.com>; jboatri@emory.edu
><jboatri@emory.edu>; Spridgets <spridgets@autox.team.net>
>Date: Wednesday, October 20, 1999 2:04 PM
>Subject: Re: latest noise
>
>
>Don't switch sides of the car if you are running radial tires. The newer
>radials might not be as sensitive to directional running but it is still
>safer not to take the risk. Switching running directions on a radial may
>damage the core of the tire.
>
>Larry
>
>PS Note I said MAY!!!!
>
>At this exact moment in time 10/20/99 11:57, Ajhsys@aol.com made the
>profound statement:
>
>>In a message dated 10/20/99 7:25:00 AM Eastern Daylight Time,
>>jboatri@emory.edu writes:
>>
>><< On the way home from work yesterday, a new noise was born on the
>>Sprite. It
>> is a muffled "thum... thum... thum... thum..." that varies with road speed
>> but not engine rpm. It sounds like it's coming from the right rear
>> tire/wheel/bearing area. It does not sound like metal on metal. In fact, it
>> sounds like the beginnings of a flat tire, but the tire is not losing
>> pressure. It _may_ lessen with application of the brakes (by pedal or hand
>> brake), but I'm not 100% sure on that. I jacked the corner up and the noise
>> is not apparent when spinning the tire by hand. Unfortunately, I did not
>> have time to do anything else last night. >>
>>
>>- - - - - - - - - - - - - - - - - - -
>>
>>Swap the wheel and tire with the left front. If the noise stays in the
>>right
>>rear, it's not the tire or wheel.
>>
>>Sherlock Hefner
>>SCCA Philly Region Rally Steward
>>'77 Midget
>>'92 Mitsubishi Expo LRV Sport
>
>
>Larry B. Macy, Ph.D.
>macy@bblmail.psycha.upenn.edu
>System Administrator/Manager
>Neuropsychiatry Section
>Department of Psychiatry
>University of Pennsylvania
>3400 Spruce St. - 1015 Gates
>Philadelphia, PA 19104
>
>Ask a question and you're a fool for three minutes; do not ask a
>question and you're a fool for the rest of your life.
>
>
Larry B. Macy, Ph.D.
macy@bblmail.psycha.upenn.edu
System Administrator/Manager
Neuropsychiatry Section
Department of Psychiatry
University of Pennsylvania
3400 Spruce St. - 1015 Gates
Philadelphia, PA 19104
Ask a question and you're a fool for three minutes; do not ask a
question and you're a fool for the rest of your life.
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