Comparison of tire sizes 275/65 R18 and 295/70 R17
275/65R18
275
Tire width 
65
Profile height 
R18
Tire diameter 
391
RPM per km 275mm179mm815mm2559mm
275
65
18
295
70
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 815 | 845 | +30 (+3.7%) | ||
| Width, mm | 275 | 295 | +20 (+7.3%) | ||
| Circumference, mm | 2559 | 2654 | +95 (+3.7%) | ||
| Profile height, mm | 179 | 207 | +28 (+15.6%) | ||
| RPM per km | 391 | 377 | -14 (-3.6%) | ||
| Clearance change, mm | +15 | ||||
| Result: | The diameter differs by 3.7%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.7 |
| Difference (km/h) | 3.7 |
Sizes for comparison of tires 275/65 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
Sizes for comparison of tires 295/70 R17
R17
R16 -1
R18 +1
