Comparison of tire sizes 295/70 R17 and 275/70 R18
295/70R17
295
Tire width 
70
Profile height 
R17
Tire diameter 
377
RPM per km 295mm207mm845mm2654mm
295
70
17
275
70
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 845 | 842 | -3 (-0.4%) | ||
| Width, mm | 295 | 275 | -20 (-6.8%) | ||
| Circumference, mm | 2654 | 2646 | -8 (-0.3%) | ||
| Profile height, mm | 207 | 193 | -14 (-6.8%) | ||
| RPM per km | 377 | 378 | +1 (+0.3%) | ||
| Clearance change, mm | -2 | ||||
| Result: | The diameter differs by -0.4%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.7 |
| Difference (km/h) | -0.3 |
Sizes for comparison of tires 295/70 R17
R17
R16 -1
R18 +1
Sizes for comparison of tires 275/70 R18
R18
R17 -1
R16 -2
R20 +2