Comparison of tire sizes 175/60 R14 and 185/60 R13

175
60
14
185
60
13
175/60R14
tire
175 Tire width
60 Profile height
R14 Tire diameter
RPM per km
tire
175mm105mm566mm1777mm563
Parameters Sizes Old New
Diameter, mm566552-14 (-2.5%)
Width, mm175185+10 (+5.7%)
Circumference, mm17771735-42 (-2.4%)
Profile height, mm105111+6 (+5.7%)
RPM per km563576+13 (+2.3%)
Clearance change, mm-7
Speedometer reading (km/h)97.6-2.4
Result:
The diameter differs by -2.5%.

Sizes for comparison of tires 175/60 R14

R14
R13 -1
R15 +1
R16 +2