Home265/70R17 vs 285/75R17

265/70R17 vs 285/75R17

The 285/75R17 is 33.83 in tall: 2.22 in (7.0%) taller than the 265/70R17 at 31.61 in. At an indicated 60 mph you'd be doing 64.2 mph.The 285/75R17 is 859.3 mm tall: 56.5 mm (7.0%) taller than the 265/70R17 at 802.8 mm. At an indicated 100 km/h you'd be doing 107.0 km/h.

By David Owen. Published 3 November 2026.

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

Width and aspect ratio both change (265/70 to 285/75). The 285/75R17 is 0.79 in wider, and each sidewall is 1.12 in taller, so it ends up 2.22 in taller overall.

Makers' own measured diameters run 31.57 to 31.97 in for the 265/70R17 and 33.86 to 34.09 in for the 285/75R17, against the calculated 31.61 in and 33.83 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 265/70R17 reads low on the 285/75R17: an indicated 60 mph is a true 64.2 mph.A speedometer that read true on the 265/70R17 reads low on the 285/75R17: an indicated 100 km/h is a true 107.0 km/h.

The odometer records about 9,340 miles for every 10,000 you drive.The odometer records about 9,340 km for every 10,000 you drive.

Ground clearance and size class

Ground clearance at the axle rises by 1.11 in: half the diameter change, unloaded.Ground clearance at the axle rises by 28.3 mm: half the diameter change, unloaded. By calculated diameter the 265/70R17 is a 32-inch tire and the 285/75R17 a 34-inch tire.

See every 32-inch and 34-inch size in metric.

Other comparisons with these sizes

• 265/70R17 vs 285/70R17
• 265/70R17 vs 275/70R17
• 265/70R17 vs 265/75R17
• 255/75R17 vs 265/70R17
• 245/75R17 vs 265/70R17
• 285/70R17 vs 285/75R17

285/75R17 in inches.

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