TIRE SIZE CROSS REFERENCE CHART

If you have an older classic car, you probably know the car’s original tire size, but not how to cross reference it to a modern tire size. Or, maybe you know the diameter of the tire you want. I’ve prepared a table here for you to use as a quick reference. Notice that as you read across, each line represents the same basic tire size, all the way from left to right. You might want to make a copy of this chart and tape it to your tool box or inside a cabinet door, where it will be easy to get your hands on whenever you need it.

TIRE SIZE CONVERSION TABLE 1950’s 1960’s Average Height 1970’s Average Height Modern Radial Average Height 750-14 775-14 26.8" F78-14 26.5" 205-75R14 26.1" 800-14 825-14 27.4" G78-14 27.2" 215-75R14 26.7" 640-15 735-15 26.5" E78-15 26.3" 185-80R15 26.7" 670-15 775-15 27.5" F78-15 27.4" 205-75R15 27" 710-15 815-15 28" G78-15 27.8" 215-75R15 27.6" 760-15 845-15 28.6" H78-15 28.3" 225-75R15 28" 800-15 900-15 29.5" L78-15 29.3" 235-75R15 29"