CompareWheels

145/70R13 vs 155/70R13

Side-by-side comparison of overall diameter, sidewall height, speedometer error, and ride-height change.

BorderlineCheck wheel-arch clearance and reset TPMS before fitting.

To scale

ground14.0 mm145/70R13533.2 mm155/70R13547.2 mm

145/70R13

Section width
145 mm
Aspect ratio
70%
Rim diameter
13"
Sidewall
101.5 mm
Overall diameter
533.2 mm
Circumference
1675 mm
Revs / mile
961
Revs / km
597

155/70R13

Section width
155 mm
Aspect ratio
70%
Rim diameter
13"
Sidewall
108.5 mm
Overall diameter
547.2 mm
Circumference
1719 mm
Revs / mile
936
Revs / km
582

Difference

Overall diameter
+14.0 mm (+2.63%)
Sidewall height
+7.0 mm
Tread width
+10 mm
Ride height (axle)
+7.0 mm
Speedometer error
+2.63%
At indicated 60 mph
actual 61.6 mph
At indicated 100 km/h
actual 102.6 km/h

Will 155/70R13 fit instead of 145/70R13?

The overall diameter changes by 2.63%. Most manufacturers consider a swap acceptable when the difference stays under 3% — beyond that, you may see speedometer error, ABS/TPMS warnings, or wheel-well clearance problems. This page only covers the math; your vehicle's wheel arches, suspension geometry, and load rating still matter.

What the numbers mean