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On 25 Jun 2005 at 2:42, Michael Cecil wrote: > At 05:04 PM 6/24/2005, Russ Wolfe said: > > >The "sr" means they are steel belted radial. > > I thought that sr or r was the speed rating. Since 1991 they just > use a single letter. r meaning a top speed of 106 mph. That's all > I recall from when I was researching the same thing last year. I > think tirerack.com has some pages on it. R stands for radial The S is the speed rating, and happens to be the lowest of the (3?) speeds. I've not heard that the speed rating had been dropped, but I suppose it's possible. I think S rated tires are supposed to be good up to 112 mi/hr, so they've always been good enough for me. A glance at the tirerack site shows that there are now LOTS of different speed ratings. S is still the basic, or Standard, rating at 112 mi/hr, but then they go up to V at 149 mi/hr. I think most makers use only a small subset of the available speed ratings, usually S, H (130 mi/hr) and V. Details here: http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=35 -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~