Comparison of tire sizes 135/80 R13 and 165/70 R13

135/80R13
135 Tire width
80 Profile height
R13 Tire diameter
583 RPM per km
135mm108mm546mm1716mm
135
80
13
165
70
13
Parameters Sizes Old New
Diameter, mm546561+15 (+2.7%)
Width, mm135165+30 (+22.2%)
Circumference, mm17161763+47 (+2.7%)
Profile height, mm108116+8 (+7.4%)
RPM per km583567-16 (-2.7%)
Clearance change, mm+8
Result:
The diameter differs by 2.7%.
Speedometer reading (km/h)
Real speed (km/h)102.7
Difference (km/h)2.7

Sizes for comparison of tires 135/80 R13

R13
R14 +1
R15 +2

Sizes for comparison of tires 165/70 R13

R13
R14 +1
R15 +2