Comparison of tire sizes 185/60 R14 and 215/45 R16
185/60R14
185
Tire width 
60
Profile height 
R14
Tire diameter 
551
RPM per km 185mm111mm578mm1815mm
185
60
14
215
45
16
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 578 | 600 | +22 (+3.8%) | ||
| Width, mm | 185 | 215 | +30 (+16.2%) | ||
| Circumference, mm | 1815 | 1885 | +70 (+3.9%) | ||
| Profile height, mm | 111 | 97 | -14 (-12.6%) | ||
| RPM per km | 551 | 531 | -20 (-3.6%) | ||
| Clearance change, mm | +11 | ||||
| Result: | The diameter differs by 3.8%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.9 |
| Difference (km/h) | 3.9 |
Sizes for comparison of tires 185/60 R14
R14
R13 -1
R15 +1
R16 +2
Sizes for comparison of tires 215/45 R16
R16
R15 -1
R17 +1
R14 -2
R18 +2