Comparison of tire sizes 175/60 R13 and 185/60 R13
175/60R13
175
Tire width 
60
Profile height 
R13
Tire diameter 
589
RPM per km 175mm105mm540mm1697mm
175
60
13
185
60
13
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 540 | 552 | +12 (+2.2%) | ||
| Width, mm | 175 | 185 | +10 (+5.7%) | ||
| Circumference, mm | 1697 | 1735 | +38 (+2.2%) | ||
| Profile height, mm | 105 | 111 | +6 (+5.7%) | ||
| RPM per km | 589 | 576 | -13 (-2.2%) | ||
| Clearance change, mm | +6 | ||||
| Result: | The diameter differs by 2.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 102.2 |
| Difference (km/h) | 2.2 |
Sizes for comparison of tires 175/60 R13
R13
R12 -1
R14 +1
R15 +2
Sizes for comparison of tires 185/60 R13
R13
R14 +1
R15 +2