165/65R14 vs 185/60R14

185/60R14 is 0.30 in (7.5 mm) taller than 165/65R14, a +1.32% diameter difference. With the speedometer set for 165/65R14, an indicated 60 mph is 60.8 mph on 185/60R14.

Is this a safe swap?

Diameter difference +1.32%: within the ±3% guideline

By overall diameter alone, 185/60R14 falls inside the ±3% range commonly used as a guideline when replacing 165/65R14. 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.

165/65R14 vs 185/60R14 differences
Measurement	165/65R14	185/60R14	Difference	% diff
Overall diameter	22.44 in (570.1 mm)	22.74 in (577.6 mm)	+0.30 in (+7.5 mm)	+1.32%
Sidewall height	4.22 in (107.3 mm)	4.37 in (111.0 mm)	+0.15 in (+3.8 mm)	+3.50%
Section width	6.50 in (165.0 mm)	7.28 in (185.0 mm)	+0.79 in (+20.0 mm)	+12.12%
Circumference	70.51 in (1,791.0 mm)	71.44 in (1,814.6 mm)	+0.93 in (+23.6 mm)	+1.32%
Revolutions per mile	899	887	−12	−1.30%

True speed with the speedometer calibrated for 165/65R14
Indicated	Actual on 165/65R14	Actual on 185/60R14	Difference
30 mph	30.0 mph	30.4 mph	+0.4 mph
60 mph	60.0 mph	60.8 mph	+0.8 mph
75 mph	75.0 mph	76.0 mph	+1.0 mph

Ride-height change: 185/60R14 raises the vehicle by 0.15 in (3.8 mm) at the axle (half the +7.5 mm diameter difference).

185/60R14 is 0.30 in taller than 165/65R14 and 20 mm wider, a 1.32% difference in overall diameter.

With the speedometer calibrated for 165/65R14, an indicated 60 mph is actually 60.8 mph on 185/60R14, and revolutions per mile change from 899 to 887.

Both sizes mount on 14-inch wheels.

Size pages

Other comparisons with 165/65R14

Other comparisons with 185/60R14

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