Comparison of tire sizes 225/60 R18 and 225/65 R18
225/60R18
225
Tire width 
60
Profile height 
R18
Tire diameter 
438
RPM per km 225mm135mm727mm2285mm
225
60
18
225
65
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 727 | 750 | +23 (+3.2%) | ||
| Width, mm | 225 | 225 | 0 (0%) | ||
| Circumference, mm | 2285 | 2355 | +70 (+3.1%) | ||
| Profile height, mm | 135 | 146 | +11 (+8.1%) | ||
| RPM per km | 438 | 425 | -13 (-3%) | ||
| Clearance change, mm | +12 | ||||
| Result: | The diameter differs by 3.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.1 |
| Difference (km/h) | 3.1 |
Sizes for comparison of tires 225/60 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
Sizes for comparison of tires 225/65 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
