Tire Ruler225/75R16 dimensions
| Overall diameter (height) | 29.29″ · 744 mm |
| Section width | 8.86″ · 225 mm |
| Sidewall height | 6.64″ · 169 mm |
| Wheel diameter | 16″ |
| Rim width (rule of thumb) | 6–8″ |
| Circumference | 92.0″ |
| Revolutions per mile | 689 |
| In inches (flotation style) | 29.3 × 8.9R16 |
How it’s calculated: the sidewall is 75% of the 225 mm width = 168.8 mm (6.64″). Add two sidewalls to the 16″ wheel: 16 + 2 × 6.64 = 29.29″.
Bigger tires than 225/75R16 on 16″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 245/70R16 | 29.5″ | +0.22″ (+0.7%) | 60.4 mph |
| 235/75R16 | 29.9″ | +0.59″ (+2.0%) | 61.2 mph |
| 255/70R16 | 30.1″ | +0.77″ (+2.6%) | 61.6 mph |
| 215/85R16 | 30.4″ | +1.10″ (+3.8%) | 62.3 mph |
| 245/75R16 | 30.5″ | +1.18″ (+4.0%) | 62.4 mph |
“60 mph reads” is your real speed when a speedometer set up for 225/75R16 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 225/75R16
Within 1.5% of the same height on a 16″ wheel. Usually interchangeable for the speedometer; check width, load index and clearance.
| Size | Height | Width | Difference |
|---|---|---|---|
| 245/70R16 | 29.5″ | 9.6″ | +0.7% |
| 235/70R16 | 29.0″ | 9.3″ | −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:
- 235/75R15: 28.9″ tall on a 15″ wheel (−1.4%)
- 245/65R17: 29.5″ tall on a 17″ wheel (+0.9%)
- 235/65R17: 29.0″ tall on a 17″ wheel (−0.9%)
- 245/60R18: 29.6″ tall on an 18″ wheel (+1.0%)
- 235/60R18: 29.1″ tall on an 18″ wheel (−0.6%)
- 255/55R18: 29.0″ tall on an 18″ wheel (−0.8%)
- 235/55R19: 29.2″ tall on a 19″ wheel (−0.4%)
- 255/50R19: 29.0″ tall on a 19″ wheel (−0.8%)
- 245/55R19: 29.6″ tall on a 19″ wheel (+1.1%)
- 245/50R20: 29.6″ tall on a 20″ wheel (+1.2%)
- 255/45R20: 29.0″ tall on a 20″ wheel (−0.9%)
- 265/45R20: 29.4″ tall on a 20″ wheel (+0.3%)
Popular 225/75R16 comparisons
Frequently asked questions
Is 225/75R16 a 29 inch tire?
Not quite. 225/75R16 is 29.29 inches tall, between a 29 and a 30 inch tire.
What size is 225/75R16 in inches?
225/75R16 is 29.3 inches tall (overall diameter), 8.9 inches wide, with a 6.6 inch sidewall, and fits a 16 inch wheel.
What tire size is equivalent to 225/75R16?
Sizes within 1.5% of the same diameter on a 16" wheel: 245/70R16 (29.5"), 235/70R16 (29.0"). Check load index and width before swapping.
What rim width fits 225/75R16?
As a rule of thumb, about 6–8 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 225/75R16 make?
About 689 revolutions per mile in theory (circumference 92.0 in). Real tires turn slightly more because they flatten under load.