Comparison of tire sizes 275/55 R20 and 275/60 R20
275/55R20
275
Tire width 
55
Profile height 
R20
Tire diameter 
393
RPM per km 275mm151mm811mm2546mm
275
55
20
275
60
20
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 811 | 838 | +27 (+3.3%) | ||
| Width, mm | 275 | 275 | 0 (0%) | ||
| Circumference, mm | 2546 | 2633 | +87 (+3.4%) | ||
| Profile height, mm | 151 | 165 | +14 (+9.3%) | ||
| RPM per km | 393 | 380 | -13 (-3.3%) | ||
| Clearance change, mm | +14 | ||||
| Result: | The diameter differs by 3.3%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.4 |
| Difference (km/h) | 3.4 |
Sizes for comparison of tires 275/55 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2
Sizes for comparison of tires 275/60 R20
R20
R18 -2
R22 +2
