

| Subject: | Re: Need Help For Forthcoming Article |
| From: | Frank Grunthaner |
| Date: | Mon, 29 Jan 2001 14:41:25 EST |
Derek, I'm sure that you will have other opinions expressed, but I believe that the static numbers that you are requesting are fraught with error. The real number needed is the dynamic rolling number which is strongly related to the tire construction detail, the inflation pressure and loading. Many manufacturers publish these numbers as the "number of revolutions per mile". The data is available from all manufacturers with an eMail to customer service. Comparing tires from Michelin, Dunlop, Yokohama and Goodyear will show similar static heights and static loaded radii with differing rev/mile stats. The rev/mile number is generally given for a specific inflation and load. The manufacturer can often give a curve with revs/mile vs. load or pressure. Frank Grunthaner
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