Comparison of tire sizes 175/60 R13 and 145/70 R13
175/60R13
175
Tire width 
60
Profile height 
R13
Tire diameter 
589
RPM per km 175mm105mm540mm1697mm
175
60
13
145
70
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 540 | 533 | -7 (-1.3%) | ||
| Width, mm | 175 | 145 | -30 (-17.1%) | ||
| Circumference, mm | 1697 | 1675 | -22 (-1.3%) | ||
| Profile height, mm | 105 | 102 | -3 (-2.9%) | ||
| RPM per km | 589 | 597 | +8 (+1.4%) | ||
| Clearance change, mm | -4 | ||||
| Result: | The diameter differs by -1.3%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 98.7 |
| Difference (km/h) | -1.3 |
Sizes for comparison of tires 175/60 R13
R13
R12 -1
R14 +1
R15 +2
Sizes for comparison of tires 145/70 R13
R13
R12 -1
R14 +1
