Comparison of tire sizes 245/60 R20 and 265/50 R20
245/60R20
245
Tire width 
60
Profile height 
R20
Tire diameter 
397
RPM per km 245mm147mm802mm2520mm
245
60
20
265
50
20
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 802 | 773 | -29 (-3.6%) | ||
| Width, mm | 245 | 265 | +20 (+8.2%) | ||
| Circumference, mm | 2520 | 2428 | -92 (-3.7%) | ||
| Profile height, mm | 147 | 133 | -14 (-9.5%) | ||
| RPM per km | 397 | 412 | +15 (+3.8%) | ||
| Clearance change, mm | -15 | ||||
| Result: | The diameter differs by -3.6%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 96.3 |
| Difference (km/h) | -3.7 |
Sizes for comparison of tires 245/60 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2
Sizes for comparison of tires 265/50 R20
R20
R19 -1
R21 +1
R18 -2
R22 +2