Vintage Tire Size Conversion Chart

     Use the following chart to figure out the closest modern tire size to your car's original tires. Keep in mind these are close approximations and may not be exact replacements. Before purchasing any tires you should compare outside diameters and the tread footprint to get a better idea on how close a match they are. Your local tire dealer should have this information. Variations in tire diameter will have an effect on speedometer accuracy while the tread footprint will have an aesthetic affect on the appearance of the car. The best way to ensure a 100% correct look for your antique car is to buy reproduction vintage tires in the originally recommended size.
 

Pre-1964 1965-72 80 series metric Alpha Numeric 78 series P-Metric 75 series Radial P-Metric 70 series Radial
5.90-13 600-13 165-13 A78-13 P165/75R13 P175/70R13
6.40-13 650-13 175-13 B78-13 P175/75R13 P185/70R13
7.25-13 700-13 185-13 D78-13 P185/75R13 P205/70R13
5.90-14 645-14 155-14 B78-14 P175/75R14 P185/70R14
6.50-14 695-14 175-14 C78-14 P185/75R14 P195/70R14
7.00-14 735-14 185-14 E78-14 P195/75R14 P205/70R14
7.50-14 775-14 195-14 F78-14 P205/75R14 P215/70R14
8.00-14 825-14 205-14 G78-14 P215/75R14 P225/70R14
8.50-14 855-14 215-14 H78-14 P225/75R14 P235/70R14
5.90-15 600-15 165-15 A78-15 P165/75R15 P175/70R15
6.50-15 685-15 175-15 C78-15 P175/75R15 P185/70R15
6.40-15 735-15 185-15 E78-15 P195/75R15 P205/70R15
6.70-15 775-15 195-15 F78-15 P205/75R15 P215/70R15
7.10-15 825-15 205-15 G78-15 P215/75R15 P225/70R15
7.60-15 855-15 215-15 H78-15 P225/75R15 P235/70R15
8.00-15 885-15 230-15 J78-15 P225/75R15 P235/70R15
8.20-15 900-15 235-15 L78-15 P235/75R15 P255/70R15

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