Comparison of tire sizes 275/55 R17 and 255/65 R17
275/55R17
275
Tire width 
55
Profile height 
R17
Tire diameter 
433
RPM per km 275mm151mm734mm2307mm
275
55
17
255
65
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 734 | 763 | +29 (+4%) | ||
| Width, mm | 275 | 255 | -20 (-7.3%) | ||
| Circumference, mm | 2307 | 2398 | +91 (+3.9%) | ||
| Profile height, mm | 151 | 166 | +15 (+9.9%) | ||
| RPM per km | 433 | 417 | -16 (-3.7%) | ||
| Clearance change, mm | +15 | ||||
| Result: | The diameter differs by 4%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.9 |
| Difference (km/h) | 3.9 |
Sizes for comparison of tires 275/55 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
Sizes for comparison of tires 255/65 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
