Comparison of tire sizes 165/80 R13 and 165/65 R14

165/80R13
165 Tire width
80 Profile height
R13 Tire diameter
536 RPM per km
165mm132mm594mm1867mm
165
80
13
165
65
14
Parameters Sizes Old New
Diameter, mm594570-24 (-4%)
Width, mm1651650 (0%)
Circumference, mm18671791-76 (-4.1%)
Profile height, mm132107-25 (-18.9%)
RPM per km536558+22 (+4.1%)
Clearance change, mm-12
Result:
The diameter differs by -4%.
Speedometer reading (km/h)
Real speed (km/h)95.9
Difference (km/h)-4.1

Sizes for comparison of tires 165/80 R13

R13
R14 +1
R15 +2

Sizes for comparison of tires 165/65 R14

R14
R13 -1
R15 +1
R16 +2