155/80R14 vs 195/65R14

195/65R14 is 0.22 in (5.5 mm) taller than 155/80R14, a +0.91% diameter difference. With the speedometer set for 155/80R14, an indicated 60 mph is 60.5 mph on 195/65R14.

Is this a safe swap?

Diameter difference +0.91%: under 1%

By overall diameter alone, 195/65R14 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.

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

155/80R14 vs 195/65R14 differences
Measurement	155/80R14	195/65R14	Difference	% diff
Overall diameter	23.76 in (603.6 mm)	23.98 in (609.1 mm)	+0.22 in (+5.5 mm)	+0.91%
Sidewall height	4.88 in (124.0 mm)	4.99 in (126.8 mm)	+0.11 in (+2.8 mm)	+2.22%
Section width	6.10 in (155.0 mm)	7.68 in (195.0 mm)	+1.57 in (+40.0 mm)	+25.81%
Circumference	74.66 in (1,896.3 mm)	75.34 in (1,913.5 mm)	+0.68 in (+17.3 mm)	+0.91%
Revolutions per mile	849	841	−8	−0.90%

True speed with the speedometer calibrated for 155/80R14
Indicated	Actual on 155/80R14	Actual on 195/65R14	Difference
30 mph	30.0 mph	30.3 mph	+0.3 mph
60 mph	60.0 mph	60.5 mph	+0.5 mph
75 mph	75.0 mph	75.7 mph	+0.7 mph

Ride-height change: 195/65R14 raises the vehicle by 0.11 in (2.8 mm) at the axle (half the +5.5 mm diameter difference).

195/65R14 is 0.22 in taller than 155/80R14 and 40 mm wider, a 0.91% difference in overall diameter.

With the speedometer calibrated for 155/80R14, an indicated 60 mph is actually 60.5 mph on 195/65R14, and revolutions per mile change from 849 to 841.

Both sizes mount on 14-inch wheels.

Size pages

Other comparisons with 155/80R14

Other comparisons with 195/65R14

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