Home285/75R16 vs 33x12.50R16

285/75R16 vs 33x12.50R16

The 33x12.50R16 is 33.00 in tall: 0.17 in (0.5%) taller than the 285/75R16 at 32.83 in. At an indicated 60 mph you'd be doing 60.3 mph.The 33x12.50R16 is 838.2 mm tall: 4.3 mm (0.5%) taller than the 285/75R16 at 833.9 mm. At an indicated 100 km/h you'd be doing 100.5 km/h.

By David Owen.

in, mphmm, km/h

Each figure is rounded separately, so related figures can differ in the last digit.

These are size-code figures only. Whether a size fits, clears and carries your load depends on your vehicle and the tire, so check with a tire shop.

What changes

The 33x12.50R16 is a flotation size: its 33.00 in height and 12.50 in width are the nominal numbers in the size code. The 285/75R16 is metric, 285 mm wide with each sidewall 75% of that, which works out at 32.83 in tall and 11.22 in wide. On paper the 33x12.50R16 is 0.17 in taller and 1.28 in wider.

Flotation sizes state their height and width in inches, and those numbers are nominal: makers aim at them, and real tires of the same size measure a little differently.

Makers' own measured diameters run 32.8 to 33.07 in for the 285/75R16, against the calculated 32.83 in. Real tires vary by brand and tread design; the figures in the table come from the size code alone.

Speedometer and odometer

A speedometer that read true on the 285/75R16 reads low on the 33x12.50R16: an indicated 60 mph is a true 60.3 mph.A speedometer that read true on the 285/75R16 reads low on the 33x12.50R16: an indicated 100 km/h is a true 100.5 km/h.

The odometer records about 9,950 miles for every 10,000 you drive.The odometer records about 9,950 km for every 10,000 you drive.

Ground clearance and size class

Ground clearance at the axle rises by 0.08 in: half the diameter change, unloaded.Ground clearance at the axle rises by 2.2 mm: half the diameter change, unloaded. By calculated diameter both are 33-inch tires.

See every 33-inch size in metric.

Other comparisons with these sizes

• 265/75R16 vs 285/75R16
• 285/75R16 vs 305/70R16

285/75R16 in inches.

Compare other sizes in the calculator