Comparison of tire sizes 155/70 R13 and 145/70 R13
155/70R13
155
Tire width 
70
Profile height 
R13
Tire diameter 
582
RPM per km 155mm109mm547mm1719mm
155
70
13
145
70
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 547 | 533 | -14 (-2.6%) | ||
| Width, mm | 155 | 145 | -10 (-6.5%) | ||
| Circumference, mm | 1719 | 1675 | -44 (-2.6%) | ||
| Profile height, mm | 109 | 102 | -7 (-6.4%) | ||
| RPM per km | 582 | 597 | +15 (+2.6%) | ||
| Clearance change, mm | -7 | ||||
| Result: | The diameter differs by -2.6%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 97.4 |
| Difference (km/h) | -2.6 |
Sizes for comparison of tires 155/70 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 145/70 R13
R13
R12 -1
R14 +1
