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Date:         Mon, 21 Mar 2005 20:32:19 -0800
Reply-To:     Shawn Wright <swright@ZUIKO.SLS.BC.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Shawn Wright <swright@ZUIKO.SLS.BC.CA>
Subject:      Tire trivia
Content-type: text/plain; charset=US-ASCII

An interesting bit of trivia for this tired of the usual "tire" thread:

I swapped my BFG A/T KOs from my '88 to '82 Westies in preparation for possible snow on our trip this week. I decided to measure the loaded radius of each of the tires I have on the ground:

Michelin XC LT4 195/7R14: 11.75" = 858 revs/mile Yoko Y370 195/7R14: 11.75" = 858 revs/mile BFG AT KO 27x8.5R14 = 12.625" = 799 revs/mile

The two spares I have in 185R14 OEM size are somewhere in between the above, but are not on the van.

Since the speedo spec says 805 revs/mile (or 500 revs/km metric), this means the BFGs are actually much closer to this figure that the 195/75R14 size, contrary to popular wisdom. Interesting trivia perhaps, or maybe I've just made an error somewhere?

In any case, this might yield me 4mph at the same revs in my '82 Diesel :-) ...or it could mean more time spent in 3rd :-(

Road trip time! Back in a week or so... :-)Shawn Wright http://zuiko.sls.bc.ca/~swright '85 Jetta TD (retired) '85 Jetta D '88 Westy 2.1L '82 Diesel Westy


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