Use the below chart to find the closest modern tire size to your car's original tires.
Vintage Tire Size Conversion Chart
| 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 |
Now that you have find your vintage car tire size the next thing you need is a good set of tools.
I have a 1965 Volvo, 122S. The tires that are on the car are marked 79P-600-15L. I have found several cross references that are pointing to P165-75-R15 and 175-70R-15 and 165-80R-15.
Do you have any suggestions for new tires that will work?
Thanks for any help that you can provide.
Jim Buckhannon