-0.58%Safe swap — speedometer error is minor
Speedometer error
With a speedometer calibrated to 215/55R17, fitting 215/60R16 makes it read as follows:
| Speedo shows | True speed | Speedo shows | True speed |
|---|---|---|---|
| 40 km/h | 39.8 km/h | 25 mph | 25 mph |
| 60 km/h | 59.6 km/h | 37 mph | 37 mph |
| 80 km/h | 79.5 km/h | 50 mph | 49 mph |
| 100 km/h | 99.4 km/h | 62 mph | 62 mph |
| 120 km/h | 119.3 km/h | 75 mph | 74 mph |
Full comparison
215/55R17
Overall diameter668.3 mm · 26.31 in
Section width215 mm · 8.46 in
Sidewall height118.3 mm · 4.66 in
Circumference2099.5 mm · 82.7 in
Revolutions per mile767
Revolutions per km476
215/60R16
Overall diameter664.4 mm · 26.16 in
Section width215 mm · 8.46 in
Sidewall height129.0 mm · 5.08 in
Circumference2087.3 mm · 82.2 in
Revolutions per mile771
Revolutions per km479
-0.58%Safe swap — speedometer error is minor
Original
Overall diameter668.3 mm · 26.31 in
Sidewall height118.3 mm
Circumference2,099.5 mm
Revolutions / mile766.5
New
Overall diameter664.4 mm · 26.16 in
Sidewall height129 mm
Circumference2,087.3 mm
Revolutions / mile771
Speedometer & odometer error
The new tire changes overall diameter by -0.58%. With a speedometer calibrated to the original tire, that same percentage is how far the speedometer and odometer read off — a taller tire means your true speed is higher than indicated and the odometer under-counts distance.
| Speedo shows | True speed | Speedo shows | True speed |
|---|---|---|---|
| 40 km/h | 39.8 km/h | 25 mph | 25 mph |
| 60 km/h | 59.6 km/h | 37 mph | 37 mph |
| 80 km/h | 79.5 km/h | 50 mph | 49 mph |
| 100 km/h | 99.4 km/h | 62 mph | 62 mph |
| 120 km/h | 119.3 km/h | 75 mph | 74 mph |
See individual specs: 215/55R17 · 215/60R16. A change this size can affect ABS/speed calibration — see wheel-speed codes if a light appears.