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As for the numbers before the letter "H" on the tire sidewall - that would be the tire's load index.




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the alpha character designates the speed rating of the tire..."H" = 130 max design speed - 210 test speed. the numerical character designates the Load Index sic: 57= 507 lbs (230 kg), 61= 567 lbs (257 kg), & etc.
So....an MC tire with a "71H" would have a load Index of 71 = 761 lbs (345 kg) with a speed rating of 130 mph (design)/210 mph (test).



Here's the charts: MC tire Size/Speed & Load Ratings Charts



Many apologies Keith, you are correct ....I mis-read your post. darn dsylexia always kicks in when I drink

Karl
Odessa, MO
'07 America, Cinnamon Girl (aka: Black Beauty or Ol' Penny) - Sit Down, Shut Up & Hang On