Comparison of tire sizes 165/80 R13 and 165/70 R14
165/80R13
165
Tire width 
80
Profile height 
R13
Tire diameter 
536
RPM per km 165mm132mm594mm1867mm
165
80
13
165
70
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 594 | 587 | -7 (-1.2%) | ||
| Width, mm | 165 | 165 | 0 (0%) | ||
| Circumference, mm | 1867 | 1843 | -24 (-1.3%) | ||
| Profile height, mm | 132 | 116 | -16 (-12.1%) | ||
| RPM per km | 536 | 543 | +7 (+1.3%) | ||
| Clearance change, mm | -4 | ||||
| Result: | The diameter differs by -1.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 98.7 |
| Difference (km/h) | -1.3 |
Sizes for comparison of tires 165/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 165/70 R14
R14
R13 -1
R15 +1
R16 +2