Comparison of tire sizes 135/80 R13 and 145/80 R13

135/80R13
135 Tire width
80 Profile height
R13 Tire diameter
583 RPM per km
135mm108mm546mm1716mm
135
80
13
145
80
13
Parameters Sizes Old New
Diameter, mm546562+16 (+2.9%)
Width, mm135145+10 (+7.4%)
Circumference, mm17161766+50 (+2.9%)
Profile height, mm108116+8 (+7.4%)
RPM per km583566-17 (-2.9%)
Clearance change, mm+8
Result:
The diameter differs by 2.9%.
Speedometer reading (km/h)
Real speed (km/h)102.9
Difference (km/h)2.9

Sizes for comparison of tires 135/80 R13

R13
R14 +1
R15 +2

Sizes for comparison of tires 145/80 R13

R13
R14 +1
R15 +2