-4.54%Borderline — noticeable speedometer/odometer error
Speedometer error
With a speedometer calibrated to 225/70R15, fitting 215/60R16 makes it read as follows:
| Speedo shows | True speed | Speedo shows | True speed |
|---|---|---|---|
| 40 km/h | 38.2 km/h | 25 mph | 24 mph |
| 60 km/h | 57.3 km/h | 37 mph | 36 mph |
| 80 km/h | 76.4 km/h | 50 mph | 47 mph |
| 100 km/h | 95.5 km/h | 62 mph | 59 mph |
| 120 km/h | 114.6 km/h | 75 mph | 71 mph |
Full comparison
225/70R15
Overall diameter696.0 mm · 27.40 in
Section width225 mm · 8.86 in
Sidewall height157.5 mm · 6.20 in
Circumference2186.5 mm · 86.1 in
Revolutions per mile736
Revolutions per km457
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
-4.54%Borderline — noticeable speedometer/odometer error
Original
Overall diameter696 mm · 27.4 in
Sidewall height157.5 mm
Circumference2,186.5 mm
Revolutions / mile736
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 -4.54%. 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 | 38.2 km/h | 25 mph | 24 mph |
| 60 km/h | 57.3 km/h | 37 mph | 36 mph |
| 80 km/h | 76.4 km/h | 50 mph | 47 mph |
| 100 km/h | 95.5 km/h | 62 mph | 59 mph |
| 120 km/h | 114.6 km/h | 75 mph | 71 mph |
See individual specs: 225/70R15 · 215/60R16. A change this size can affect ABS/speed calibration — see wheel-speed codes if a light appears.