235/60R16 vs 245/60R16

245/60R16 is 0.47 in (12.0 mm) taller than 235/60R16, a +1.74% diameter difference. With the speedometer set for 235/60R16, an indicated 60 mph is 61.0 mph on 245/60R16.

Is this a safe swap?

Diameter difference +1.74%: within the ±3% guideline

By overall diameter alone, 245/60R16 falls inside the ±3% range commonly used as a guideline when replacing 235/60R16. 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.

235/60R16 vs 245/60R16 differences
Measurement	235/60R16	245/60R16	Difference	% diff
Overall diameter	27.10 in (688.4 mm)	27.57 in (700.4 mm)	+0.47 in (+12.0 mm)	+1.74%
Sidewall height	5.55 in (141.0 mm)	5.79 in (147.0 mm)	+0.24 in (+6.0 mm)	+4.26%
Section width	9.25 in (235.0 mm)	9.65 in (245.0 mm)	+0.39 in (+10.0 mm)	+4.26%
Circumference	85.14 in (2,162.7 mm)	86.63 in (2,200.4 mm)	+1.48 in (+37.7 mm)	+1.74%
Revolutions per mile	744	731	−13	−1.71%

True speed with the speedometer calibrated for 235/60R16
Indicated	Actual on 235/60R16	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 0.24 in (6.0 mm) at the axle (half the +12.0 mm diameter difference).

245/60R16 is 0.47 in taller than 235/60R16 and 10 mm wider, a 1.74% difference in overall diameter.

With the speedometer calibrated for 235/60R16, an indicated 60 mph is actually 61.0 mph on 245/60R16, and revolutions per mile change from 744 to 731.

Both sizes mount on 16-inch wheels.

Size pages

Other comparisons with 235/60R16

Other comparisons with 245/60R16

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