TireSizesFinder

145/80R13 vs 165/60R14

165/60R14 is 0.34 in (8.6 mm) shorter than 145/80R13, a −1.53% diameter difference. With the speedometer set for 145/80R13, an indicated 60 mph is 59.1 mph on 165/60R14.

Is this a safe swap?

Diameter difference −1.53%: within the ±3% guideline

By overall diameter alone, 165/60R14 falls inside the ±3% range commonly used as a guideline when replacing 145/80R13. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 145/80R13 (22.13 in) vs 165/60R14 (21.80 in)145/80R1322.13 in × 5.71 in165/60R1421.80 in × 6.50 in
Side profile and tread width, drawn to the same scale.
145/80R13 vs 165/60R14 differences
Measurement145/80R13165/60R14Difference% diff
Overall diameter22.13 in (562.2 mm)21.80 in (553.6 mm)−0.34 in (−8.6 mm)−1.53%
Sidewall height4.57 in (116.0 mm)3.90 in (99.0 mm)−0.67 in (−17.0 mm)−14.66%
Section width5.71 in (145.0 mm)6.50 in (165.0 mm)+0.79 in (+20.0 mm)+13.79%
Circumference69.54 in (1,766.2 mm)68.47 in (1,739.2 mm)−1.06 in (−27.0 mm)−1.53%
Revolutions per mile911925+14+1.55%
True speed with the speedometer calibrated for 145/80R13
IndicatedActual on 145/80R13Actual on 165/60R14Difference
30 mph30.0 mph29.5 mph−0.5 mph
60 mph60.0 mph59.1 mph−0.9 mph
75 mph75.0 mph73.9 mph−1.1 mph

Ride-height change: 165/60R14 lowers the vehicle by 0.17 in (4.3 mm) at the axle (half the −8.6 mm diameter difference).

165/60R14 is 0.34 in shorter than 145/80R13 and 20 mm wider, a 1.53% difference in overall diameter.

With the speedometer calibrated for 145/80R13, an indicated 60 mph is actually 59.1 mph on 165/60R14, and revolutions per mile change from 911 to 925.

165/60R14 mounts on a 14-inch wheel, a plus-1 fitment from the 13-inch wheel of 145/80R13.

Size pages

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