Comparison of tire sizes 275/50 R20 and 275/55 R20
275/50R20
275
Tire width 
50
Profile height 
R20
Tire diameter 
407
RPM per km 275mm138mm783mm2460mm
275
50
20
275
55
20
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 783 | 811 | +28 (+3.6%) | ||
| Width, mm | 275 | 275 | 0 (0%) | ||
| Circumference, mm | 2460 | 2546 | +86 (+3.5%) | ||
| Profile height, mm | 138 | 151 | +13 (+9.4%) | ||
| RPM per km | 407 | 393 | -14 (-3.4%) | ||
| Clearance change, mm | +14 | ||||
| Result: | The diameter differs by 3.6%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.5 |
| Difference (km/h) | 3.5 |
Sizes for comparison of tires 275/50 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2
Sizes for comparison of tires 275/55 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2