Home285/75R17 vs 35x12.50R17

285/75R17 vs 35x12.50R17

The 35x12.50R17 is 35.00 in tall: 1.17 in (3.5%) taller than the 285/75R17 at 33.83 in. At an indicated 60 mph you'd be doing 62.1 mph.The 35x12.50R17 is 889.0 mm tall: 29.7 mm (3.5%) taller than the 285/75R17 at 859.3 mm. At an indicated 100 km/h you'd be doing 103.5 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 35x12.50R17 is a flotation size: its 35.00 in height and 12.50 in width are the nominal numbers in the size code. The 285/75R17 is metric, 285 mm wide with each sidewall 75% of that, which works out at 33.83 in tall and 11.22 in wide. On paper the 35x12.50R17 is 1.17 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 33.86 to 34.09 in for the 285/75R17 and 34.5 to 34.84 in for the 35x12.50R17, against the calculated 33.83 in and 35.00 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 285/75R17 reads low on the 35x12.50R17: an indicated 60 mph is a true 62.1 mph.A speedometer that read true on the 285/75R17 reads low on the 35x12.50R17: an indicated 100 km/h is a true 103.5 km/h.

The odometer records about 9,670 miles for every 10,000 you drive.The odometer records about 9,670 km for every 10,000 you drive.

Ground clearance and size class

Ground clearance at the axle rises by 0.58 in: half the diameter change, unloaded.Ground clearance at the axle rises by 14.9 mm: half the diameter change, unloaded. By calculated diameter the 285/75R17 is a 34-inch tire and the 35x12.50R17 a 35-inch tire.

See every 34-inch and 35-inch size in metric.

Other comparisons with these sizes

• 265/70R17 vs 285/75R17
• 285/70R17 vs 285/75R17
• 315/70R17 vs 35x12.50R17

285/75R17 in inches.

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