+4.54%Borderline — noticeable speedometer/odometer error
Speedometer error
With a speedometer calibrated to 195/60R15, fitting 215/55R16 makes it read as follows:
| Speedo shows | True speed | Speedo shows | True speed |
|---|---|---|---|
| 40 km/h | 41.8 km/h | 25 mph | 26 mph |
| 60 km/h | 62.7 km/h | 37 mph | 39 mph |
| 80 km/h | 83.6 km/h | 50 mph | 52 mph |
| 100 km/h | 104.5 km/h | 62 mph | 65 mph |
| 120 km/h | 125.4 km/h | 75 mph | 78 mph |
Full comparison
195/60R15
Overall diameter615.0 mm · 24.21 in
Section width195 mm · 7.68 in
Sidewall height117.0 mm · 4.61 in
Circumference1932.1 mm · 76.1 in
Revolutions per mile833
Revolutions per km518
215/55R16
Overall diameter642.9 mm · 25.31 in
Section width215 mm · 8.46 in
Sidewall height118.3 mm · 4.66 in
Circumference2019.7 mm · 79.5 in
Revolutions per mile797
Revolutions per km495
+4.54%Borderline — noticeable speedometer/odometer error
Original
Overall diameter615 mm · 24.21 in
Sidewall height117 mm
Circumference1,932.1 mm
Revolutions / mile833
New
Overall diameter642.9 mm · 25.31 in
Sidewall height118.3 mm
Circumference2,019.7 mm
Revolutions / mile796.8
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 | 41.8 km/h | 25 mph | 26 mph |
| 60 km/h | 62.7 km/h | 37 mph | 39 mph |
| 80 km/h | 83.6 km/h | 50 mph | 52 mph |
| 100 km/h | 104.5 km/h | 62 mph | 65 mph |
| 120 km/h | 125.4 km/h | 75 mph | 78 mph |
See individual specs: 195/60R15 · 215/55R16. A change this size can affect ABS/speed calibration — see wheel-speed codes if a light appears.