Tire Ruler285/75R17 dimensions
| Overall diameter (height) | 33.83″ · 859 mm |
| Section width | 11.22″ · 285 mm |
| Sidewall height | 8.42″ · 214 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 8–10″ |
| Circumference | 106.3″ |
| Revolutions per mile | 596 |
| In inches (flotation style) | 33.8 × 11.2R17 |
How it’s calculated: the sidewall is 75% of the 285 mm width = 213.8 mm (8.42″). Add two sidewalls to the 17″ wheel: 17 + 2 × 8.42 = 33.83″.
Bigger tires than 285/75R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 315/70R17 | 34.4″ | +0.53″ (+1.6%) | 60.9 mph |
| 35x12.50R17 | 35.0″ | +1.17″ (+3.5%) | 62.1 mph |
“60 mph reads” is your real speed when a speedometer set up for 285/75R17 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 285/75R17
Within 1.5% of the same height on a 17″ wheel. Usually interchangeable for the speedometer; check width, load index and clearance.
| Size | Height | Width | Difference |
|---|---|---|---|
| 34x10.50R17 | 34.0″ | 10.5″ | +0.5% |
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 295/70R18: 34.3″ tall on an 18″ wheel (+1.3%)
- 275/65R20: 34.1″ tall on a 20″ wheel (+0.7%)
- 285/60R20: 33.5″ tall on a 20″ wheel (−1.1%)
- 295/60R20: 33.9″ tall on a 20″ wheel (+0.3%)
- 265/65R20: 33.6″ tall on a 20″ wheel (−0.8%)
- 34x11.50R20: 34.0″ tall on a 20″ wheel (+0.5%)
Popular 285/75R17 comparisons
Frequently asked questions
Is 285/75R17 a 34 inch tire?
Yes. 285/75R17 is 33.83 inches tall, so it's sold and talked about as a 34-inch tire.
What size is 285/75R17 in inches?
285/75R17 is 33.8 inches tall (overall diameter), 11.2 inches wide, with a 8.4 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 285/75R17?
Sizes within 1.5% of the same diameter on a 17" wheel: 34x10.50R17 (34.0"). Check load index and width before swapping.
What rim width fits 285/75R17?
As a rule of thumb, about 8–10 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 285/75R17 make?
About 596 revolutions per mile in theory (circumference 106.3 in). Real tires turn slightly more because they flatten under load.