Comparison of tire sizes 135/80 R13 and 165/55 R14
135/80R13
135
Tire width 
80
Profile height 
R13
Tire diameter 
583
RPM per km 135mm108mm546mm1716mm
135
80
13
165
55
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 546 | 537 | -9 (-1.6%) | ||
| Width, mm | 135 | 165 | +30 (+22.2%) | ||
| Circumference, mm | 1716 | 1687 | -29 (-1.7%) | ||
| Profile height, mm | 108 | 91 | -17 (-15.7%) | ||
| RPM per km | 583 | 593 | +10 (+1.7%) | ||
| Clearance change, mm | -5 | ||||
| Result: | The diameter differs by -1.6%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 98.3 |
| Difference (km/h) | -1.7 |
Sizes for comparison of tires 135/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 165/55 R14
R14
R13 -1
R15 +1
R12 -2