Comparison of tire sizes 215/55 R18 and 225/65 R16
215/55R18
215
Tire width 
55
Profile height 
R18
Tire diameter 
459
RPM per km 215mm118mm694mm2179mm
215
55
18
225
65
16
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 694 | 699 | +5 (+0.7%) | ||
| Width, mm | 215 | 225 | +10 (+4.7%) | ||
| Circumference, mm | 2179 | 2196 | +17 (+0.8%) | ||
| Profile height, mm | 118 | 146 | +28 (+23.7%) | ||
| RPM per km | 459 | 455 | -4 (-0.9%) | ||
| Clearance change, mm | +3 | ||||
| Result: | The diameter differs by 0.7%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 100.8 |
| Difference (km/h) | 0.8 |
Sizes for comparison of tires 215/55 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
Sizes for comparison of tires 225/65 R16
R16
R15 -1
R17 +1
R14 -2
R18 +2
