Comparison of tire sizes 185/65 R14 and 185/55 R16

185
65
14
185
55
16
185/65R14
tire
185 Tire width
65 Profile height
R14 Tire diameter
RPM per km
tire
185mm120mm596mm1873mm534
Parameters Sizes Old New
Diameter, mm596610+14 (+2.3%)
Width, mm1851850 (0%)
Circumference, mm18731916+43 (+2.3%)
Profile height, mm120102-18 (-15%)
RPM per km534522-12 (-2.2%)
Clearance change, mm+7
Speedometer reading (km/h)102.32.3
Result:
The diameter differs by 2.3%.

Sizes for comparison of tires 185/65 R14

R14
R13 -1
R15 +1
R16 +2