Re: [Chevelle-List] P275/40ZR17

[Herbert Lumpp]

My bad, the original example was for a 205/65/15 and since the discussion was centered around a 275/40/17 I changed the numbers to match, but I neglected the numbers in the text!  Sorry for any confusion... it should have read:   40 � This number refers to the height of the sidewall, or the Aspect Ratio. It is a percentage of the section width. In this example, you would take 40 percent of 275 millimeters and this would give you the sidewall height.   cYa-   Herb Lumpp 1966 El Camino ACES #3509 http://web.tampabay.rr.com/herbsworld/index.htm       40 � This number refers to the height of the sidewall, or the Aspect Ratio. It is a percentage of the section width. In this example, you would take 65 percent of 205 millimeters and this would give you the sidewall height.   Why 65% of 205. Where did 205 mm come in the play. Is 65 % a standard