Comparison of tire sizes 175/65 R13 and 185/60 R13
175/65R13
175
Tire width 
65
Profile height 
R13
Tire diameter 
571
RPM per km 175mm114mm558mm1752mm
175
65
13
185
60
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 558 | 552 | -6 (-1.1%) | ||
| Width, mm | 175 | 185 | +10 (+5.7%) | ||
| Circumference, mm | 1752 | 1735 | -17 (-1%) | ||
| Profile height, mm | 114 | 111 | -3 (-2.6%) | ||
| RPM per km | 571 | 576 | +5 (+0.9%) | ||
| Clearance change, mm | -3 | ||||
| Result: | The diameter differs by -1.1%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99 |
| Difference (km/h) | -1 |
Sizes for comparison of tires 175/65 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 185/60 R13
R13
R14 +1
R15 +2