205/75R15 vs 245/60R16

245/60R16 is 0.47 in (11.9 mm) taller than 205/75R15, a +1.73% diameter difference. With the speedometer set for 205/75R15, an indicated 60 mph is 61.0 mph on 245/60R16.

Is this a safe swap?

Diameter difference +1.73%: within the ±3% guideline

By overall diameter alone, 245/60R16 falls inside the ±3% range commonly used as a guideline when replacing 205/75R15. 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.

205/75R15 vs 245/60R16 differences
Measurement	205/75R15	245/60R16	Difference	% diff
Overall diameter	27.11 in (688.5 mm)	27.57 in (700.4 mm)	+0.47 in (+11.9 mm)	+1.73%
Sidewall height	6.05 in (153.8 mm)	5.79 in (147.0 mm)	−0.27 in (−6.7 mm)	−4.39%
Section width	8.07 in (205.0 mm)	9.65 in (245.0 mm)	+1.57 in (+40.0 mm)	+19.51%
Circumference	85.16 in (2,163.0 mm)	86.63 in (2,200.4 mm)	+1.47 in (+37.4 mm)	+1.73%
Revolutions per mile	744	731	−13	−1.70%

True speed with the speedometer calibrated for 205/75R15
Indicated	Actual on 205/75R15	Actual on 245/60R16	Difference
30 mph	30.0 mph	30.5 mph	+0.5 mph
60 mph	60.0 mph	61.0 mph	+1.0 mph
75 mph	75.0 mph	76.3 mph	+1.3 mph

Ride-height change: 245/60R16 raises the vehicle by 0.23 in (5.9 mm) at the axle (half the +11.9 mm diameter difference).

245/60R16 is 0.47 in taller than 205/75R15 and 40 mm wider, a 1.73% difference in overall diameter.

With the speedometer calibrated for 205/75R15, an indicated 60 mph is actually 61.0 mph on 245/60R16, and revolutions per mile change from 744 to 731.

245/60R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 205/75R15.

Size pages

Other comparisons with 205/75R15

Other comparisons with 245/60R16

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