Comparison of tire sizes 265/50 R20 and 285/50 R20
265/50R20
265
Tire width 
50
Profile height 
R20
Tire diameter 
412
RPM per km 265mm133mm773mm2428mm
265
50
20
285
50
20
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 773 | 793 | +20 (+2.6%) | ||
| Width, mm | 265 | 285 | +20 (+7.5%) | ||
| Circumference, mm | 2428 | 2491 | +63 (+2.6%) | ||
| Profile height, mm | 133 | 143 | +10 (+7.5%) | ||
| RPM per km | 412 | 401 | -11 (-2.7%) | ||
| Clearance change, mm | +10 | ||||
| Result: | The diameter differs by 2.6%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 102.6 |
| Difference (km/h) | 2.6 |
Sizes for comparison of tires 265/50 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2
Sizes for comparison of tires 285/50 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2
