Comparison of tire sizes 225/60 R18 and 225/55 R19
225/60R18
225
Tire width 
60
Profile height 
R18
Tire diameter 
438
RPM per km 225mm135mm727mm2285mm
225
60
18
225
55
19
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 727 | 730 | +3 (+0.4%) | ||
| Width, mm | 225 | 225 | 0 (0%) | ||
| Circumference, mm | 2285 | 2294 | +9 (+0.4%) | ||
| Profile height, mm | 135 | 124 | -11 (-8.1%) | ||
| RPM per km | 438 | 436 | -2 (-0.5%) | ||
| Clearance change, mm | +2 | ||||
| Result: | The diameter differs by 0.4%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 100.4 |
| Difference (km/h) | 0.4 |
Sizes for comparison of tires 225/60 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
Sizes for comparison of tires 225/55 R19
R19
R18 -1
R20 +1
R17 -2
R21 +2