Comparison of tire sizes 285/75 R16 and 275/70 R18
285/75R16
285
Tire width 
75
Profile height 
R16
Tire diameter 
382
RPM per km 285mm214mm834mm2620mm
285
75
16
275
70
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 834 | 842 | +8 (+1%) | ||
| Width, mm | 285 | 275 | -10 (-3.5%) | ||
| Circumference, mm | 2620 | 2646 | +26 (+1%) | ||
| Profile height, mm | 214 | 193 | -21 (-9.8%) | ||
| RPM per km | 382 | 378 | -4 (-1%) | ||
| Clearance change, mm | +4 | ||||
| Result: | The diameter differs by 1%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 101 |
| Difference (km/h) | 1 |
Sizes for comparison of tires 285/75 R16
R16
R17 +1
R18 +2
Sizes for comparison of tires 275/70 R18
R18
R17 -1
R16 -2
R20 +2
