[Chevelle-List] P275/40ZR17

[Herbert Lumpp]

P � Passenger car tire. If there is no P before the size it would indicate it is a European metric tire. An LT before the size would designate a light truck tire. 275 � This is the Section Width in millimeters. This measurement is taken from sidewall to sidewall. 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. Z � Speed rating, Z = 149 mph and over. R � Radial tire construction. 17 � Wheel diameter in inches.     cYa-   Herb Lumpp 1966 El Camino ACES #3509 http://web.tampabay.rr.com/herbsworld/index.htm