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cars:tires [2024/05/06 18:53] – created adamcars:tires [2025/11/30 08:00] (current) – external edit 127.0.0.1
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-**p** is for passenger. (as opposed to truck, trailer, whatever other vehicle) \\+**p** is for passenger. (as opposed to truck, trailer, or **m** for motorcycle - yes they use the same format) \\
 **205** is section width in millimeters. \\ **205** is section width in millimeters. \\
 **55** is "aspect ratio" or "profile". I think: Ratio of width (along car axle) to height (along radius) \\ **55** is "aspect ratio" or "profile". I think: Ratio of width (along car axle) to height (along radius) \\
 **R** is "radial construction", most are radial - there's the rare D for "bias-ply" or B for "Belted" \\ **R** is "radial construction", most are radial - there's the rare D for "bias-ply" or B for "Belted" \\
 **16** is for wheel diameter, in inches. you might also find these in millimeters. \\ **16** is for wheel diameter, in inches. you might also find these in millimeters. \\
-**89H** is for the service description; the service the tire can provide. H = 130mph, apparently.+**89H** is for the service description; the service the tire can provide. the number is some factor with respect to weight rating, the letter is a speed rating. (H is 130mph)
  
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-that "H" in "89H" is a speed rating. 
  
 ^ Speed Rating ^ Miles/Hour ^ KM/Hour ^ Typical Application(s) ^ ^ Speed Rating ^ Miles/Hour ^ KM/Hour ^ Typical Application(s) ^
cars/tires.1715021581.txt.gz · Last modified: by adam

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