Comparison of tire sizes 135/80 R13 and 145/70 R13
135/80R13
135
Tire width 
80
Profile height 
R13
Tire diameter 
583
RPM per km 135mm108mm546mm1716mm
135
80
13
145
70
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 546 | 533 | -13 (-2.4%) | ||
| Width, mm | 135 | 145 | +10 (+7.4%) | ||
| Circumference, mm | 1716 | 1675 | -41 (-2.4%) | ||
| Profile height, mm | 108 | 102 | -6 (-5.6%) | ||
| RPM per km | 583 | 597 | +14 (+2.4%) | ||
| Clearance change, mm | -7 | ||||
| Result: | The diameter differs by -2.4%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 97.6 |
| Difference (km/h) | -2.4 |
Sizes for comparison of tires 135/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 145/70 R13
R13
R12 -1
R14 +1
