265/70R16 vs 265/75R16 tire size
A 265/75R16 is 1.04 inches (27 mm) taller than a 265/70R16, and the same width. Fit them in place of 265/70R16 tires and the speedometer reads low: at 60 mph on it you’re doing 62.0 mph, 3.4% faster, and the vehicle sits 0.52 inches (13 mm) higher.
Sources checked
| Dimension | 265/70R16 | 265/75R16 | Change |
|---|---|---|---|
| Overall diameter | 30.61 in (777 mm) | 31.65 in (804 mm) | +1.04 in (+27 mm) |
| Section width | 10.43 in (265 mm) | 10.43 in (265 mm) | 0.00 in (0 mm) |
| Sidewall height | 7.30 in (186 mm) | 7.82 in (199 mm) | +0.52 in (+13 mm) |
| Aspect ratio | 70% | 75% | |
| Rim diameter | 16 in | 16 in | |
| Circumference | 96.2 in (2,442 mm) | 99.4 in (2,526 mm) | +3.2 in |
| Revolutions per mile | 659 | 637 | −22 |
| Revolutions per km | 409 | 396 | −13 |
Check another speed or size
Metric, LT and flotation
At 60 mph on the speedometer you’re doing
62.0mph
+3.4% · the speedometer reads low
- Height
- +1.04 in (+27 mm)
- Width
- 0.00 in (0 mm)
- Ground clearance
- +0.52 in (+13 mm)
- Each side, same wheel
- 0.00 in (0 mm)
265/70R16 and 265/75R16 side by side
| Dimension | 265/70R16 | 265/75R16 | Change |
|---|---|---|---|
| Overall diameter | 30.61 in (777 mm) | 31.65 in (804 mm) | +1.04 in (+27 mm) |
| Section width | 10.43 in (265 mm) | 10.43 in (265 mm) | 0.00 in (0 mm) |
| Sidewall height | 7.30 in (186 mm) | 7.82 in (199 mm) | +0.52 in (+13 mm) |
| Aspect ratio | 70% | 75% | |
| Rim diameter | 16 in | 16 in | |
| Circumference | 96.2 in | 99.4 in | +3.2 in |
| Revolutions per mile | 659 | 637 | −22 |
| Revolutions per km | 409 | 396 | −13 |
The working
- 265/70R16: sidewall = 265 mm × 70% = 185.5 mm = 7.30 in.
- Diameter = rim + 2 × sidewall = 16 + 2 × 7.30 = 30.61 in (777 mm).
- Circumference = π × 30.61 = 96.2 in; revolutions per mile = 63,360 ÷ 96.2 = 659.
- 265/75R16: sidewall = 265 mm × 75% = 198.8 mm = 7.82 in.
- Diameter = rim + 2 × sidewall = 16 + 2 × 7.82 = 31.65 in (804 mm).
- Circumference = π × 31.65 = 99.4 in; revolutions per mile = 63,360 ÷ 99.4 = 637.
- Speedometer. True speed = what it shows × new diameter ÷ old = 60 × 31.65 ÷ 30.61 = 62.0 mph.
- Ground clearance. Half the change in diameter: (31.65 − 30.61) ÷ 2 = +0.52 in.
Speedometer
A 265/75R16 turns 637 times a mile against the 265/70R16’s 659. With a speedometer set for 265/70R16, true speed is what it shows × 31.65 ÷ 30.61:
| Speedometer shows | True speed | Difference |
|---|---|---|
| 25 mph | 25.9 mph | +0.9 mph |
| 35 mph | 36.2 mph | +1.2 mph |
| 45 mph | 46.5 mph | +1.5 mph |
| 55 mph | 56.9 mph | +1.9 mph |
| 65 mph | 67.2 mph | +2.2 mph |
| 75 mph | 77.6 mph | +2.6 mph |
Clearance
- Ground clearance: +0.52 in (+13 mm), half the change in diameter.
- Top of the tread: +0.52 in (+13 mm), so that much less room under the fender.
- Each side, on the same wheel: no change.
A new wheel with a different width or offset moves the tire again. The sidewall goes from 7.30 to 7.82 inches.
What tire makers publish
Inflated on the maker’s measuring rim; the percentage is against the arithmetic.
| Tire | Size as printed | Diameter | Width | Revs per mile |
|---|---|---|---|---|
| Toyo Open Country A/T III | P265/70R16 | 30.6 in (0.0%) | 10.7 in | 678 |
| Toyo Open Country A/T III | 265/75R16 | 31.7 in (+0.2%) | 10.5 in | 656 |
| Toyo Open Country A/T III, black sidewall | LT265/75R16 | 31.7 in (+0.2%) | 10.5 in | 656 |
| Toyo Open Country A/T III, outlined white letters | LT265/75R16 | 31.9 in (+0.8%) | 10.5 in | 651 |
| Nitto Trail Grappler M/T | LT265/75R16 | 31.89 in (+0.8%) | 10.51 in | – |
Each size on its own
- 265/70R16 tire size: 30.6 × 10.4 in
- 265/75R16 tire size: 31.6 × 10.4 in
Questions
Can I fit 265/75R16 tires instead of 265/70R16?
They fit the same 16-inch wheels. A 265/75R16 is 1.04 inches (27 mm) taller than a 265/70R16, and the same width, so check three things first: that your wheels are within the 265/75R16’s approved rim width range, which tire makers list for each size; that it clears the fenders and suspension at full lock and full travel; and that its load index meets what your door-jamb placard asks for.
How far off is the speedometer with 265/75R16 tires?
With a speedometer set for 265/70R16, the speedometer reads low: at 60 mph on it you’re doing 62.0 mph, 3.4% faster. The odometer is off the same way: over 1,000 miles driven it shows 967.0.
Does 265/75R16 change the ground clearance?
By +0.52 inches (+13 mm), half the change in diameter, at the axles and at the lowest point under them. The width doesn’t change.
Sources
- Bridgestone Americas: Determining tire size: P-metric, Euro-metric, LT-metric, C-type and flotation sizes, and what each number means (checked October 28, 2026)
- Toyo Tires: Extensa A/S II sizes and specifications: inflated overall diameter and width, revolutions per mile (checked October 28, 2026)
- Toyo Tires: Proxes Sport A/S sizes and specifications: inflated overall diameter and width, revolutions per mile (checked October 28, 2026)
- Toyo Tires: Open Country A/T III sizes and specifications: P-metric, LT-metric and flotation sizes, with revolutions per mile (checked October 28, 2026)
- Nitto Tire: Trail Grappler M/T sizes and specs: inflated overall diameter and width, LT-metric and flotation sizes (checked October 28, 2026)
Spotted a number that doesn’t match your manual or a source? Tell us; corrections are logged on the sources page.