+0.14%Safe swap — speedometer error is minor
Speedometer error
With a speedometer calibrated to 265/70R17, fitting 265/75R16 makes it read as follows:
| Speedo shows | True speed | Speedo shows | True speed |
|---|---|---|---|
| 40 km/h | 40.1 km/h | 25 mph | 25 mph |
| 60 km/h | 60.1 km/h | 37 mph | 37 mph |
| 80 km/h | 80.1 km/h | 50 mph | 50 mph |
| 100 km/h | 100.1 km/h | 62 mph | 62 mph |
| 120 km/h | 120.2 km/h | 75 mph | 75 mph |
Full comparison
265/70R17
Overall diameter802.8 mm · 31.61 in
Section width265 mm · 10.43 in
Sidewall height185.5 mm · 7.30 in
Circumference2522.1 mm · 99.3 in
Revolutions per mile638
Revolutions per km396
265/75R16
Overall diameter803.9 mm · 31.65 in
Section width265 mm · 10.43 in
Sidewall height198.8 mm · 7.82 in
Circumference2525.5 mm · 99.4 in
Revolutions per mile637
Revolutions per km396
+0.14%Safe swap — speedometer error is minor
Original
Overall diameter802.8 mm · 31.61 in
Sidewall height185.5 mm
Circumference2,522.1 mm
Revolutions / mile638.1
New
Overall diameter803.9 mm · 31.65 in
Sidewall height198.8 mm
Circumference2,525.5 mm
Revolutions / mile637.2
Speedometer & odometer error
The new tire changes overall diameter by +0.14%. 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 | 40.1 km/h | 25 mph | 25 mph |
| 60 km/h | 60.1 km/h | 37 mph | 37 mph |
| 80 km/h | 80.1 km/h | 50 mph | 50 mph |
| 100 km/h | 100.1 km/h | 62 mph | 62 mph |
| 120 km/h | 120.2 km/h | 75 mph | 75 mph |
See individual specs: 265/70R17 · 265/75R16. A change this size can affect ABS/speed calibration — see wheel-speed codes if a light appears.