Comparison of tire sizes 135/80 R13 and 155/60 R15
135/80R13
135
Tire width 
80
Profile height 
R13
Tire diameter 
583
RPM per km 135mm108mm546mm1716mm
135
80
13
155
60
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 546 | 567 | +21 (+3.8%) | ||
| Width, mm | 135 | 155 | +20 (+14.8%) | ||
| Circumference, mm | 1716 | 1781 | +65 (+3.8%) | ||
| Profile height, mm | 108 | 93 | -15 (-13.9%) | ||
| RPM per km | 583 | 561 | -22 (-3.8%) | ||
| Clearance change, mm | +11 | ||||
| Result: | The diameter differs by 3.8%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.8 |
| Difference (km/h) | 3.8 |
Sizes for comparison of tires 135/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 155/60 R15
R15
R14 -1
R16 +1
R13 -2