Tire Ruler245/65R17 dimensions
| Overall diameter (height) | 29.54″ · 750 mm |
| Section width | 9.65″ · 245 mm |
| Sidewall height | 6.27″ · 159 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 7–8.5″ |
| Circumference | 92.8″ |
| Revolutions per mile | 683 |
| In inches (flotation style) | 29.5 × 9.6R17 |
How it’s calculated: the sidewall is 65% of the 245 mm width = 159.3 mm (6.27″). Add two sidewalls to the 17″ wheel: 17 + 2 × 6.27 = 29.54″.
Bigger tires than 245/65R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 235/70R17 | 30.0″ | +0.41″ (+1.4%) | 60.8 mph |
| 255/65R17 | 30.1″ | +0.51″ (+1.7%) | 61.0 mph |
| 245/70R17 | 30.5″ | +0.96″ (+3.3%) | 62.0 mph |
| 265/65R17 | 30.6″ | +1.02″ (+3.5%) | 62.1 mph |
| 255/70R17 | 31.1″ | +1.52″ (+5.1%) | 63.1 mph |
“60 mph reads” is your real speed when a speedometer set up for 245/65R17 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 245/65R17
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 |
|---|---|---|---|
| 235/70R17 | 30.0″ | 9.3″ | +1.4% |
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 235/75R16: 29.9″ tall on a 16″ wheel (+1.1%)
- 225/75R16: 29.3″ tall on a 16″ wheel (−0.9%)
- 245/70R16: 29.5″ tall on a 16″ wheel (−0.1%)
- 245/60R18: 29.6″ tall on an 18″ wheel (+0.1%)
- 235/60R18: 29.1″ tall on an 18″ wheel (−1.5%)
- 235/55R19: 29.2″ tall on a 19″ wheel (−1.2%)
- 245/55R19: 29.6″ tall on a 19″ wheel (+0.2%)
- 245/50R20: 29.6″ tall on a 20″ wheel (+0.4%)
- 275/45R20: 29.7″ tall on a 20″ wheel (+0.7%)
- 265/45R20: 29.4″ tall on a 20″ wheel (−0.5%)
Popular 245/65R17 comparisons
Frequently asked questions
Is 245/65R17 a 30 inch tire?
Not quite. 245/65R17 is 29.54 inches tall, between a 29 and a 30 inch tire.
What size is 245/65R17 in inches?
245/65R17 is 29.5 inches tall (overall diameter), 9.6 inches wide, with a 6.3 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 245/65R17?
Sizes within 1.5% of the same diameter on a 17" wheel: 235/70R17 (30.0"). Check load index and width before swapping.
What rim width fits 245/65R17?
As a rule of thumb, about 7–8.5 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 245/65R17 make?
About 683 revolutions per mile in theory (circumference 92.8 in). Real tires turn slightly more because they flatten under load.