Comparison of tire sizes 135/80 R13 and 135/70 R13
135/80R13
135
Tire width 
80
Profile height 
R13
Tire diameter 
583
RPM per km 135mm108mm546mm1716mm
135
80
13
135
70
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 546 | 519 | -27 (-4.9%) | ||
| Width, mm | 135 | 135 | 0 (0%) | ||
| Circumference, mm | 1716 | 1631 | -85 (-5%) | ||
| Profile height, mm | 108 | 95 | -13 (-12%) | ||
| RPM per km | 583 | 613 | +30 (+5.1%) | ||
| Clearance change, mm | -14 | ||||
| Result: | The diameter differs by -4.9%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 95 |
| Difference (km/h) | -5 |
Sizes for comparison of tires 135/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 135/70 R13
R13
R12 -1
R14 +1