Comparison of tire sizes 195/65 R14 and 185/50 R16

195/65R14
195 Tire width
65 Profile height
R14 Tire diameter
523 RPM per km
195mm127mm609mm1914mm
195
65
14
185
50
16
Parameters Sizes Old New
Diameter, mm609591-18 (-3%)
Width, mm195185-10 (-5.1%)
Circumference, mm19141858-56 (-2.9%)
Profile height, mm12793-34 (-26.8%)
RPM per km523538+15 (+2.9%)
Clearance change, mm-9
Result:
The diameter differs by -3%.
Speedometer reading (km/h)
Real speed (km/h)97.1
Difference (km/h)-2.9

Sizes for comparison of tires 195/65 R14

R14
R13 -1
R15 +1
R16 +2

Sizes for comparison of tires 185/50 R16

R16
R15 -1
R17 +1
R14 -2
R18 +2