Comparison of tire sizes 185/65 R13 and 165/65 R14
185/65R13
185
Tire width 
65
Profile height 
R13
Tire diameter 
558
RPM per km 185mm120mm571mm1793mm
185
65
13
165
65
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 571 | 570 | -1 (-0.2%) | ||
| Width, mm | 185 | 165 | -20 (-10.8%) | ||
| Circumference, mm | 1793 | 1791 | -2 (-0.1%) | ||
| Profile height, mm | 120 | 107 | -13 (-10.8%) | ||
| RPM per km | 558 | 558 | 0 (0%) | ||
| Clearance change, mm | -1 | ||||
| Result: | The diameter differs by -0.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.9 |
| Difference (km/h) | -0.1 |
Sizes for comparison of tires 185/65 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 165/65 R14
R14
R13 -1
R15 +1
R16 +2
