175/70R13 Tire Size
175/70R13 diameter, sidewall, revolutions per mile, and plus-sizing options.
The 175/70R13 tire size breaks down as: 175 mm section width, 70% aspect ratio, and a 13-inch rim. Below are its real, calculated dimensions.
175/70R13 Calculated Dimensions
| Metric | Value |
|---|---|
| Overall diameter | 22.6 in (575 mm) |
| Sidewall height | 4.8 in (123 mm) |
| Circumference | 71.1 in (1807 mm) |
| Revolutions per mile | 891 |
Typical Fitment
175/70R13 is most often found on older compact sedans. Always confirm against the door-jamb placard or owner manual before fitting.
Plus-Sizing Alternatives
These sizes keep the overall diameter close to 175/70R13, so speedometer and gearing stay near stock:
| Size | Diameter | Diameter change |
|---|---|---|
| 185/65R13 | 22.47 in | -0.8% |
| 185/60R14 | 22.74 in | +0.4% |
| 195/50R15 | 22.68 in | +0.1% |
Speedometer Note
If you fit a 185/65R13 instead of 175/70R13, the diameter changes by -0.8%. A taller tire makes your speedometer read low — at a true 60 mph it would show roughly 60 mph. A shorter tire has the opposite effect, so the gauge reads high.
Use the tire calculator to compare 175/70R13 against any other size and see the exact diameter and speedometer difference.
Frequently Asked Questions
What does 175/70R13 mean?
175/70R13 means a 175 mm wide tire with a 70% sidewall aspect ratio mounted on a 13-inch rim. The aspect ratio is the sidewall height as a percentage of the width.
Can I plus-size from 175/70R13?
Yes, as long as the replacement keeps the overall diameter close to stock so the speedometer stays accurate. Common plus-size moves from 175/70R13 are 185/65R13, 185/60R14, 195/50R15.
Will 175/70R13 affect my speedometer?
Only if it differs in diameter from your original size. A taller tire reads low; a shorter tire reads high. Compare the two sizes with the calculator to find the percentage.