Comparison of tire sizes 165/80 R13 and 185/70 R13
165/80R13
165
Tire width 
80
Profile height 
R13
Tire diameter 
536
RPM per km 165mm132mm594mm1867mm
165
80
13
185
70
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 594 | 589 | -5 (-0.8%) | ||
| Width, mm | 165 | 185 | +20 (+12.1%) | ||
| Circumference, mm | 1867 | 1851 | -16 (-0.9%) | ||
| Profile height, mm | 132 | 130 | -2 (-1.5%) | ||
| RPM per km | 536 | 540 | +4 (+0.7%) | ||
| Clearance change, mm | -3 | ||||
| Result: | The diameter differs by -0.8%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.1 |
| Difference (km/h) | -0.9 |
Sizes for comparison of tires 165/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 185/70 R13
R13
R14 +1
R15 +2
