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From: skinner@saber.UUCP (Robert Skinner)
Newsgroups: net.cycle
Subject: Re: tire rotation direction
Message-ID: <1648@saber.UUCP>
Date: Wed, 26-Jun-85 13:11:55 EDT
Article-I.D.: saber.1648
Posted: Wed Jun 26 13:11:55 1985
Date-Received: Sat, 29-Jun-85 01:28:31 EDT
References: <300@ucdavis.UUCP>
Distribution: net
Organization: Saber Technology, San Jose, CA
Lines: 35

> []
> 
> 	i recently bought a tire which was labeled to be a rear
> 	tire; the salesperson said that it would work as a front
> 	tire as well.  the tire has a marker showing the rotation
> 	direction.  i put the tire on using the correct orientation,
> 	but a friend of mine says that i should reverse the tire
> 	since it's not being used as a back tire -- something about
> 	the loading being different.  can anybody explain this?
> 	i'm not THAT lazy, but if i don't have to take it off again. . .
> 
> 	thanks in advance...hesh
> -- 

The reason is that the tire is designed to take stress best in one direction.
The back tire gets stressed most when accelerating, since it's on the drive
wheel and the weight shifts back.  The front tire is stressed when braking,
since almost all of the weight shifts forward (witness the ease of locking
up the real wheel).  So, the rear tire is stressed *with* the rotation and
the front tire is stressed *against* the rotation.  (Or is that technically 
"against and with"?  Oh well, you get the idea)

Glad to be of help.

------------------------------------------------------------------------------
				Keep the rubber side down.
				
				You're not paranoid if everyone is really out
					to kill you (and your motorcycle).

Name:	Robert Skinner
Mail:	Saber Technology, 2381 Bering Drive, San Jose, California 95131
AT&T:	(408) 945-0518, or 945-9600 (mesg. only)
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