TireSizesFinder

155/80R14 vs 215/45R16

215/45R16 is 0.15 in (3.7 mm) shorter than 155/80R14, a −0.61% diameter difference. With the speedometer set for 155/80R14, an indicated 60 mph is 59.6 mph on 215/45R16.

Is this a safe swap?

Diameter difference −0.61%: under 1%

By overall diameter alone, 215/45R16 is a near match for 155/80R14; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 155/80R14 (23.76 in) vs 215/45R16 (23.62 in)155/80R1423.76 in × 6.10 in215/45R1623.62 in × 8.46 in
Side profile and tread width, drawn to the same scale.
155/80R14 vs 215/45R16 differences
Measurement155/80R14215/45R16Difference% diff
Overall diameter23.76 in (603.6 mm)23.62 in (599.9 mm)−0.15 in (−3.7 mm)−0.61%
Sidewall height4.88 in (124.0 mm)3.81 in (96.8 mm)−1.07 in (−27.2 mm)−21.98%
Section width6.10 in (155.0 mm)8.46 in (215.0 mm)+2.36 in (+60.0 mm)+38.71%
Circumference74.66 in (1,896.3 mm)74.20 in (1,884.6 mm)−0.46 in (−11.6 mm)−0.61%
Revolutions per mile849854+5+0.62%
True speed with the speedometer calibrated for 155/80R14
IndicatedActual on 155/80R14Actual on 215/45R16Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.6 mph−0.4 mph
75 mph75.0 mph74.5 mph−0.5 mph

Ride-height change: 215/45R16 lowers the vehicle by 0.07 in (1.8 mm) at the axle (half the −3.7 mm diameter difference).

215/45R16 is 0.15 in shorter than 155/80R14 and 60 mm wider, a 0.61% difference in overall diameter.

With the speedometer calibrated for 155/80R14, an indicated 60 mph is actually 59.6 mph on 215/45R16, and revolutions per mile change from 849 to 854.

215/45R16 mounts on a 16-inch wheel, a plus-2 fitment from the 14-inch wheel of 155/80R14.

Size pages

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