Home245/75R17 vs 265/70R17

245/75R17 vs 265/70R17

The 265/70R17 is 31.61 in tall: 0.14 in (0.4%) taller than the 245/75R17 at 31.47 in. At an indicated 60 mph you'd be doing 60.3 mph.The 265/70R17 is 802.8 mm tall: 3.5 mm (0.4%) taller than the 245/75R17 at 799.3 mm. At an indicated 100 km/h you'd be doing 100.4 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 (245/75 to 265/70). The 265/70R17 is 0.78 in wider, and each sidewall is 0.07 in taller, so it ends up 0.14 in taller overall.

Makers' own measured diameters run 31.5 in for the 245/75R17 and 31.57 to 31.97 in for the 265/70R17, against the calculated 31.47 in and 31.61 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 245/75R17 reads low on the 265/70R17: an indicated 60 mph is a true 60.3 mph.A speedometer that read true on the 245/75R17 reads low on the 265/70R17: an indicated 100 km/h is a true 100.4 km/h.

The odometer records about 9,960 miles for every 10,000 you drive.The odometer records about 9,960 km for every 10,000 you drive.

Ground clearance and size class

Ground clearance at the axle rises by 0.07 in: half the diameter change, unloaded.Ground clearance at the axle rises by 1.8 mm: half the diameter change, unloaded. By calculated diameter the 245/75R17 is a 31-inch tire and the 265/70R17 a 32-inch tire.

See every 31-inch and 32-inch size in metric.

Other comparisons with these sizes

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

Compare other sizes in the calculator