Comparison of tire sizes 275/50 R22 and 275/55 R20
275/50R22
275
Tire width 
50
Profile height 
R22
Tire diameter 
382
RPM per km 275mm138mm834mm2619mm
275
50
22
275
55
20
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 834 | 811 | -23 (-2.8%) | ||
| Width, mm | 275 | 275 | 0 (0%) | ||
| Circumference, mm | 2619 | 2546 | -73 (-2.8%) | ||
| Profile height, mm | 138 | 151 | +13 (+9.4%) | ||
| RPM per km | 382 | 393 | +11 (+2.9%) | ||
| Clearance change, mm | -12 | ||||
| Result: | The diameter differs by -2.8%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 97.2 |
| Difference (km/h) | -2.8 |
Sizes for comparison of tires 275/50 R22
R22
R20 -2
Sizes for comparison of tires 275/55 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2