215/70R15 Tire Size
215/70R15 diameter, sidewall, revolutions per mile, and plus-sizing options.
The 215/70R15 tire size breaks down as: 215 mm section width, 70% aspect ratio, and a 15-inch rim. Below are its real, calculated dimensions.
215/70R15 Calculated Dimensions
| Metric | Value |
|---|---|
| Overall diameter | 26.9 in (682 mm) |
| Sidewall height | 5.9 in (151 mm) |
| Circumference | 84.4 in (2143 mm) |
| Revolutions per mile | 751 |
Typical Fitment
215/70R15 is most often found on small SUVs and wagons. Always confirm against the door-jamb placard or owner manual before fitting.
Plus-Sizing Alternatives
These sizes keep the overall diameter close to 215/70R15, so speedometer and gearing stay near stock:
| Size | Diameter | Diameter change |
|---|---|---|
| 225/65R15 | 26.52 in | -1.2% |
| 225/60R16 | 26.63 in | -0.8% |
| 235/55R17 | 27.18 in | +1.2% |
Speedometer Note
If you fit a 225/65R15 instead of 215/70R15, the diameter changes by -1.2%. A taller tire makes your speedometer read low — at a true 60 mph it would show roughly 61 mph. A shorter tire has the opposite effect, so the gauge reads high.
Use the tire calculator to compare 215/70R15 against any other size and see the exact diameter and speedometer difference.
Frequently Asked Questions
What does 215/70R15 mean?
215/70R15 means a 215 mm wide tire with a 70% sidewall aspect ratio mounted on a 15-inch rim. The aspect ratio is the sidewall height as a percentage of the width.
Can I plus-size from 215/70R15?
Yes, as long as the replacement keeps the overall diameter close to stock so the speedometer stays accurate. Common plus-size moves from 215/70R15 are 225/65R15, 225/60R16, 235/55R17.
Will 215/70R15 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.