Comparison of tire sizes 165/70 R13 and 175/55 R15

165/70R13
165 Tire width
70 Profile height
R13 Tire diameter
567 RPM per km
165mm116mm561mm1763mm
165
70
13
175
55
15
Parameters Sizes Old New
Diameter, mm561574+13 (+2.3%)
Width, mm165175+10 (+6.1%)
Circumference, mm17631802+39 (+2.2%)
Profile height, mm11696-20 (-17.2%)
RPM per km567555-12 (-2.1%)
Clearance change, mm+7
Result:
The diameter differs by 2.3%.
Speedometer reading (km/h)
Real speed (km/h)102.2
Difference (km/h)2.2

Sizes for comparison of tires 165/70 R13

R13
R14 +1
R15 +2

Sizes for comparison of tires 175/55 R15

R15
R14 -1
R16 +1
R13 -2
R17 +2