Comparison of tire sizes 135/80 R13 and 155/70 R12
135/80R13
135
Tire width
80
Profile height
R13
Tire diameter
583
RPM per km
135mm108mm546mm1716mm
135
80
13
155
70
12
Parameters Sizes | Old | New | |||
---|---|---|---|---|---|
Diameter, mm | 546 | 522 | -24 (-4.4%) | ||
Width, mm | 135 | 155 | +20 (+14.8%) | ||
Circumference, mm | 1716 | 1639 | -77 (-4.5%) | ||
Profile height, mm | 108 | 109 | +1 (+0.9%) | ||
RPM per km | 583 | 610 | +27 (+4.6%) | ||
Clearance change, mm | -12 | ||||
Result: | The diameter differs by -4.4%. |
Speedometer reading (km/h) | |
---|---|
Real speed (km/h) | 95.5 |
Difference (km/h) | -4.5 |
Sizes for comparison of tires 135/80 R13
R13
R14 +1
R15 +2
Sizes for comparison of tires 155/70 R12
R12
R13 +1
R14 +2