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 Author Topic:   How to convert metric to inches? RocKunregistered posted November 30, 1999 07:51 AM            There seems to be quite a few questions on converting metric tire sizes to inches. Does anyone know the formula?What is a 255 / 65 /16 in inches?IP: Logged Jeffunregistered posted November 30, 1999 08:23 AM            One inch = 25.4mm The first number is the width of the tire in mm. The second number is the sidewall height as a fraction of the width (i.e. 0.65 x 255 = 165.75mm). The tires total sidewall height is then 2 x 165.75 = 331.5mm. This is 13.1 inches. Add this to the 16 inch rim diameter and you get 29.1 inches as the overall diameter of the mounted tire. IP: Logged Marcunregistered posted December 01, 1999 03:37 AM            Jeff, you must be a pro, bulls eye. For youRock, if you need to calculate the diameter,you are probably looking for a replacementsize. You are for sure driving either aMercedez ML320, 2000 Nissan Pathfinder SE oran Infinity QX4. Replacement size is for those vehicules 235/70R16.IP: Logged Rockunregistered posted December 02, 1999 06:47 AM            Thanks JeffYou're close Marc, 2000 Frontier SEIP: Logged
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