Comparison of tire sizes 185/60 R14 and 185/55 R15
185/60R14
185
Tire width 
60
Profile height 
R14
Tire diameter 
551
RPM per km 185mm111mm578mm1815mm
185
60
14
185
55
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 578 | 585 | +7 (+1.2%) | ||
| Width, mm | 185 | 185 | 0 (0%) | ||
| Circumference, mm | 1815 | 1836 | +21 (+1.2%) | ||
| Profile height, mm | 111 | 102 | -9 (-8.1%) | ||
| RPM per km | 551 | 545 | -6 (-1.1%) | ||
| Clearance change, mm | +4 | ||||
| Result: | The diameter differs by 1.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 101.2 |
| Difference (km/h) | 1.2 |
Sizes for comparison of tires 185/60 R14
R14
R13 -1
R15 +1
R16 +2
Sizes for comparison of tires 185/55 R15
R15
R14 -1
R16 +1
R13 -2
R17 +2
