Tire Ruler275/70R17 dimensions
| Overall diameter (height) | 32.16″ · 817 mm |
| Section width | 10.83″ · 275 mm |
| Sidewall height | 7.58″ · 193 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 7.5–9.5″ |
| Circumference | 101.0″ |
| Revolutions per mile | 627 |
| In inches (flotation style) | 32.2 × 10.8R17 |
How it’s calculated: the sidewall is 70% of the 275 mm width = 192.5 mm (7.58″). Add two sidewalls to the 17″ wheel: 17 + 2 × 7.58 = 32.16″.
Bigger tires than 275/70R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 285/70R17 | 32.7″ | +0.55″ (+1.7%) | 61.0 mph |
| 33x12.50R17 | 33.0″ | +0.84″ (+2.6%) | 61.6 mph |
| 255/80R17 | 33.1″ | +0.91″ (+2.8%) | 61.7 mph |
| 295/70R17 | 33.3″ | +1.10″ (+3.4%) | 62.1 mph |
| 285/75R17 | 33.8″ | +1.67″ (+5.2%) | 63.1 mph |
“60 mph reads” is your real speed when a speedometer set up for 275/70R17 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 275/70R17
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 |
|---|---|---|---|
| 255/75R17 | 32.1″ | 10.0″ | −0.3% |
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 32x11.50R15: 32.0″ tall on a 15″ wheel (−0.5%)
- 235/85R16: 31.7″ tall on a 16″ wheel (−1.3%)
- 275/65R18: 32.1″ tall on an 18″ wheel (−0.3%)
- 285/65R18: 32.6″ tall on an 18″ wheel (+1.3%)
- 255/70R18: 32.1″ tall on an 18″ wheel (−0.3%)
- 265/70R18: 32.6″ tall on an 18″ wheel (+1.4%)
- 275/55R20: 31.9″ tall on a 20″ wheel (−0.8%)
- 285/55R20: 32.3″ tall on a 20″ wheel (+0.6%)
- 265/60R20: 32.5″ tall on a 20″ wheel (+1.1%)
- 305/50R20: 32.0″ tall on a 20″ wheel (−0.5%)
- 285/45R22: 32.1″ tall on a 22″ wheel (−0.2%)
- 275/45R22: 31.7″ tall on a 22″ wheel (−1.3%)
Popular 275/70R17 comparisons
Frequently asked questions
Is 275/70R17 a 32 inch tire?
Yes. 275/70R17 is 32.16 inches tall, so it's sold and talked about as a 32-inch tire.
What size is 275/70R17 in inches?
275/70R17 is 32.2 inches tall (overall diameter), 10.8 inches wide, with a 7.6 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 275/70R17?
Sizes within 1.5% of the same diameter on a 17" wheel: 255/75R17 (32.1"). Check load index and width before swapping.
What rim width fits 275/70R17?
As a rule of thumb, about 7.5–9.5 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 275/70R17 make?
About 627 revolutions per mile in theory (circumference 101.0 in). Real tires turn slightly more because they flatten under load.