Popular off-road truck comparison

265/70R17 vs 285/70R17

A 285/70R17 tire is wider and taller than a 265/70R17 tire, one of the most common truck and off-road upgrade comparisons.

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The calculator opens with 265/70R17 and 285/70R17 already filled in, including the visual tire diagram, speedometer gauge, metric toggle, and share link.

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Check fitment The diameter and width both increase, so check suspension clearance, wheel offset, liner trimming needs, and speedometer change.

265/70R17 vs 285/70R17 dimensions summary
Measurement	265/70R17	285/70R17
Overall diameter	31.61 in	32.71 in
Sidewall height	7.30 in	7.85 in
Circumference	99.29 in	102.76 in
Revolutions per mile	638	617
Ground clearance change	0.00 in	+0.55 in
Diameter difference	0.0%	+3.5%

Height change +1.10 in +28 mm overall diameter

Speedometer at 60 mph 62.1 mph 2.1 mph difference

Diameter difference +3.5% The diameter change is between 3% and 5%, so verify clearance, gearing, load rating, and speedometer impact.

What changes between 265/70R17 and 285/70R17?

The main difference is overall diameter. 285/70R17 measures 32.71 in across, compared with 31.61 in for 265/70R17. That creates a +3.5% diameter change and a +0.55 in ground clearance change.

At an indicated 60 mph, this comparison estimates an actual speed of 62.1 mph. Use the live calculator before buying tires so you can review the visual clearance change, speedometer numbers, and shareable comparison link in one place.