Tire Ruler295/70R18 dimensions
| Overall diameter (height) | 34.26″ · 870 mm |
| Section width | 11.61″ · 295 mm |
| Sidewall height | 8.13″ · 207 mm |
| Wheel diameter | 18″ |
| Rim width (rule of thumb) | 8–10″ |
| Circumference | 107.6″ |
| Revolutions per mile | 589 |
| In inches (flotation style) | 34.3 × 11.6R18 |
How it’s calculated: the sidewall is 70% of the 295 mm width = 206.5 mm (8.13″). Add two sidewalls to the 18″ wheel: 18 + 2 × 8.13 = 34.26″.
Bigger tires than 295/70R18 on 18″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 325/65R18 | 34.6″ | +0.37″ (+1.1%) | 60.7 mph |
| 285/75R18 | 34.8″ | +0.57″ (+1.7%) | 61.0 mph |
| 35x12.50R18 | 35.0″ | +0.74″ (+2.2%) | 61.3 mph |
“60 mph reads” is your real speed when a speedometer set up for 295/70R18 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 295/70R18
Within 1.5% of the same height on an 18″ wheel. Usually interchangeable for the speedometer; check width, load index and clearance.
| Size | Height | Width | Difference |
|---|---|---|---|
| 325/65R18 | 34.6″ | 12.8″ | +1.1% |
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 315/75R16: 34.6″ tall on a 16″ wheel (+1.0%)
- 315/70R17: 34.4″ tall on a 17″ wheel (+0.3%)
- 285/75R17: 33.8″ tall on a 17″ wheel (−1.3%)
- 34x10.50R17: 34.0″ tall on a 17″ wheel (−0.8%)
- 275/65R20: 34.1″ tall on a 20″ wheel (−0.5%)
- 285/65R20: 34.6″ tall on a 20″ wheel (+1.0%)
- 295/60R20: 33.9″ tall on a 20″ wheel (−0.9%)
- 34x11.50R20: 34.0″ tall on a 20″ wheel (−0.8%)
Popular 295/70R18 comparisons
Frequently asked questions
Is 295/70R18 a 34 inch tire?
Not quite. 295/70R18 is 34.26 inches tall, between a 34 and a 35 inch tire.
What size is 295/70R18 in inches?
295/70R18 is 34.3 inches tall (overall diameter), 11.6 inches wide, with a 8.1 inch sidewall, and fits an 18 inch wheel.
What tire size is equivalent to 295/70R18?
Sizes within 1.5% of the same diameter on an 18" wheel: 325/65R18 (34.6"). Check load index and width before swapping.
What rim width fits 295/70R18?
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 295/70R18 make?
About 589 revolutions per mile in theory (circumference 107.6 in). Real tires turn slightly more because they flatten under load.