Comparison of tire sizes 175/65 R13 and 165/55 R14
175/65R13
175
Tire width 
65
Profile height 
R13
Tire diameter 
571
RPM per km 175mm114mm558mm1752mm
175
65
13
165
55
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 558 | 537 | -21 (-3.8%) | ||
| Width, mm | 175 | 165 | -10 (-5.7%) | ||
| Circumference, mm | 1752 | 1687 | -65 (-3.7%) | ||
| Profile height, mm | 114 | 91 | -23 (-20.2%) | ||
| RPM per km | 571 | 593 | +22 (+3.9%) | ||
| Clearance change, mm | -11 | ||||
| Result: | The diameter differs by -3.8%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 96.3 |
| Difference (km/h) | -3.7 |
Sizes for comparison of tires 175/65 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 165/55 R14
R14
R13 -1
R15 +1
R12 -2