Comparison of tire sizes 185/65 R14 and 185/55 R16
185/65R14
185
Tire width 
65
Profile height 
R14
Tire diameter 
534
RPM per km 185mm120mm596mm1873mm
185
65
14
185
55
16
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 596 | 610 | +14 (+2.3%) | ||
| Width, mm | 185 | 185 | 0 (0%) | ||
| Circumference, mm | 1873 | 1916 | +43 (+2.3%) | ||
| Profile height, mm | 120 | 102 | -18 (-15%) | ||
| RPM per km | 534 | 522 | -12 (-2.2%) | ||
| Clearance change, mm | +7 | ||||
| Result: | The diameter differs by 2.3%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 102.3 |
| Difference (km/h) | 2.3 |
Sizes for comparison of tires 185/65 R14
R14
R13 -1
R15 +1
R16 +2
Sizes for comparison of tires 185/55 R16
R16
R15 -1
R17 +1
R14 -2
R18 +2