TireSizesFinder

165/80R13 vs 155/80R14

155/80R14 is 0.37 in (9.4 mm) taller than 165/80R13, a +1.58% diameter difference. With the speedometer set for 165/80R13, an indicated 60 mph is 60.9 mph on 155/80R14.

Is this a safe swap?

Diameter difference +1.58%: within the ±3% guideline

By overall diameter alone, 155/80R14 falls inside the ±3% range commonly used as a guideline when replacing 165/80R13. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 165/80R13 (23.39 in) vs 155/80R14 (23.76 in)165/80R1323.39 in × 6.50 in155/80R1423.76 in × 6.10 in
Side profile and tread width, drawn to the same scale.
165/80R13 vs 155/80R14 differences
Measurement165/80R13155/80R14Difference% diff
Overall diameter23.39 in (594.2 mm)23.76 in (603.6 mm)+0.37 in (+9.4 mm)+1.58%
Sidewall height5.20 in (132.0 mm)4.88 in (124.0 mm)−0.31 in (−8.0 mm)−6.06%
Section width6.50 in (165.0 mm)6.10 in (155.0 mm)−0.39 in (−10.0 mm)−6.06%
Circumference73.49 in (1,866.7 mm)74.66 in (1,896.3 mm)+1.16 in (+29.5 mm)+1.58%
Revolutions per mile862849−13−1.56%
True speed with the speedometer calibrated for 165/80R13
IndicatedActual on 165/80R13Actual on 155/80R14Difference
30 mph30.0 mph30.5 mph+0.5 mph
60 mph60.0 mph60.9 mph+0.9 mph
75 mph75.0 mph76.2 mph+1.2 mph

Ride-height change: 155/80R14 raises the vehicle by 0.19 in (4.7 mm) at the axle (half the +9.4 mm diameter difference).

155/80R14 is 0.37 in taller than 165/80R13 and 10 mm narrower, a 1.58% difference in overall diameter.

With the speedometer calibrated for 165/80R13, an indicated 60 mph is actually 60.9 mph on 155/80R14, and revolutions per mile change from 862 to 849.

155/80R14 mounts on a 14-inch wheel, a plus-1 fitment from the 13-inch wheel of 165/80R13.

Size pages

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Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.