Comparison of tire sizes 135/80 R13 and 165/60 R14

135/80R13
135 Tire width
80 Profile height
R13 Tire diameter
583 RPM per km
135mm108mm546mm1716mm
135
80
13
165
60
14
Parameters Sizes Old New
Diameter, mm546554+8 (+1.5%)
Width, mm135165+30 (+22.2%)
Circumference, mm17161739+23 (+1.3%)
Profile height, mm10899-9 (-8.3%)
RPM per km583575-8 (-1.4%)
Clearance change, mm+4
Result:
The diameter differs by 1.5%.
Speedometer reading (km/h)
Real speed (km/h)101.3
Difference (km/h)1.3

Sizes for comparison of tires 135/80 R13

R13
R14 +1
R15 +2

Sizes for comparison of tires 165/60 R14

R14
R13 -1
R15 +1
R16 +2