Comparison of tire sizes 275/60 R17 and 255/60 R17
275/60R17
275
Tire width 
60
Profile height 
R17
Tire diameter 
418
RPM per km 275mm165mm762mm2393mm
275
60
17
255
60
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 762 | 738 | -24 (-3.1%) | ||
| Width, mm | 275 | 255 | -20 (-7.3%) | ||
| Circumference, mm | 2393 | 2318 | -75 (-3.1%) | ||
| Profile height, mm | 165 | 153 | -12 (-7.3%) | ||
| RPM per km | 418 | 431 | +13 (+3.1%) | ||
| Clearance change, mm | -12 | ||||
| Result: | The diameter differs by -3.1%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 96.9 |
| Difference (km/h) | -3.1 |
Sizes for comparison of tires 275/60 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
Sizes for comparison of tires 255/60 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
