Comparison of tire sizes 135/80 R13 and 175/65 R13

135/80R13
135 Tire width
80 Profile height
R13 Tire diameter
583 RPM per km
135mm108mm546mm1716mm
135
80
13
175
65
13
Parameters Sizes Old New
Diameter, mm546558+12 (+2.2%)
Width, mm135175+40 (+29.6%)
Circumference, mm17161752+36 (+2.1%)
Profile height, mm108114+6 (+5.6%)
RPM per km583571-12 (-2.1%)
Clearance change, mm+6
Result:
The diameter differs by 2.2%.
Speedometer reading (km/h)
Real speed (km/h)102.1
Difference (km/h)2.1

Sizes for comparison of tires 135/80 R13

R13
R14 +1
R15 +2

Sizes for comparison of tires 175/65 R13

R13
R14 +1
R15 +2