195/60R14 vs 225/40R16

225/40R16 is 0.13 in (3.2 mm) shorter than 195/60R14, a −0.54% diameter difference. With the speedometer set for 195/60R14, an indicated 60 mph is 59.7 mph on 225/40R16.

Is this a safe swap?

Diameter difference −0.54%: under 1%

By overall diameter alone, 225/40R16 is a near match for 195/60R14; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

Side profile and tread width, drawn to the same scale.

195/60R14 vs 225/40R16 differences
Measurement	195/60R14	225/40R16	Difference	% diff
Overall diameter	23.21 in (589.6 mm)	23.09 in (586.4 mm)	−0.13 in (−3.2 mm)	−0.54%
Sidewall height	4.61 in (117.0 mm)	3.54 in (90.0 mm)	−1.06 in (−27.0 mm)	−23.08%
Section width	7.68 in (195.0 mm)	8.86 in (225.0 mm)	+1.18 in (+30.0 mm)	+15.38%
Circumference	72.92 in (1,852.3 mm)	72.53 in (1,842.2 mm)	−0.40 in (−10.1 mm)	−0.54%
Revolutions per mile	869	874	+5	+0.55%

True speed with the speedometer calibrated for 195/60R14
Indicated	Actual on 195/60R14	Actual on 225/40R16	Difference
30 mph	30.0 mph	29.8 mph	−0.2 mph
60 mph	60.0 mph	59.7 mph	−0.3 mph
75 mph	75.0 mph	74.6 mph	−0.4 mph

Ride-height change: 225/40R16 lowers the vehicle by 0.06 in (1.6 mm) at the axle (half the −3.2 mm diameter difference).

225/40R16 is 0.13 in shorter than 195/60R14 and 30 mm wider, a 0.54% difference in overall diameter.

With the speedometer calibrated for 195/60R14, an indicated 60 mph is actually 59.7 mph on 225/40R16, and revolutions per mile change from 869 to 874.

225/40R16 mounts on a 16-inch wheel, a plus-2 fitment from the 14-inch wheel of 195/60R14.

Size pages

Other comparisons with 195/60R14

Other comparisons with 225/40R16

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.