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Subject:Re: Simple tire qurestion
From:David Brodbeck
Date:Mon, 10 Mar 2003 20:02:16 -0500
Bob Stevens wrote:

> "I think" (uh oh) the 99S refers to speed rating. I'm way under the wire
> there. Went just over 90 last weekend, going down hill, with the
> wind......

99 is the load rating index - 1323 lbs.
S is the speed rating index - 112 mph

http://www.tirerack.com/tires/tiretech/general/sidewall.htm is really
helpful.