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Front tire question

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Is a 90-90/21 tire going to work all right? It seems very narrow, it's a Pirelli dual sport DOT tire. I currently have a 90-100/21 and it seems a lot wider.

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I run a 90-90/21 Michelin M12 on the front and it is fine. I think the second number is the percent of the first number the sidewall height is (profile). I think the numbers represent: width-profile/rim diameter.

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For whatever reason Michelins sizes are a bit screwy. I just ordered an M12 front in 80/100 and I got a 90/90. I spoke with the vendor from whom I purchased the tires and they said that the 90/90 is Michelins equivalent size to a 80/100.

James

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