Comparison of tire sizes 175/55 R15 and 165/60 R14
175/55R15
175
Tire width 
55
Profile height 
R15
Tire diameter 
555
RPM per km 175mm96mm574mm1802mm
175
55
15
165
60
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 574 | 554 | -20 (-3.5%) | ||
| Width, mm | 175 | 165 | -10 (-5.7%) | ||
| Circumference, mm | 1802 | 1739 | -63 (-3.5%) | ||
| Profile height, mm | 96 | 99 | +3 (+3.1%) | ||
| RPM per km | 555 | 575 | +20 (+3.6%) | ||
| Clearance change, mm | -10 | ||||
| Result: | The diameter differs by -3.5%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 96.5 |
| Difference (km/h) | -3.5 |
Sizes for comparison of tires 175/55 R15
R15
R14 -1
R16 +1
R13 -2
R17 +2
Sizes for comparison of tires 165/60 R14
R14
R13 -1
R15 +1
R16 +2