LT265/70R17 Tire Size
LT265/70R17 diameter, sidewall, revolutions per mile, and plus-sizing options.
The LT265/70R17 tire size breaks down as: 265 mm section width, 70% aspect ratio, and a 17-inch rim. Below are its real, calculated dimensions.
LT265/70R17 Calculated Dimensions
| Metric | Value |
|---|---|
| Overall diameter | 31.6 in (803 mm) |
| Sidewall height | 7.3 in (186 mm) |
| Circumference | 99.3 in (2522 mm) |
| Revolutions per mile | 638 |
Typical Fitment
LT265/70R17 is most often found on half-ton pickups. Always confirm against the door-jamb placard or owner manual before fitting.
Plus-Sizing Alternatives
These sizes keep the overall diameter close to LT265/70R17, so speedometer and gearing stay near stock:
| Size | Diameter | Diameter change |
|---|---|---|
| 275/65R17 | 31.07 in | -1.7% |
| 275/65R18 | 32.07 in | +1.5% |
| 285/55R19 | 31.34 in | -0.8% |
Speedometer Note
If you fit a 275/65R17 instead of LT265/70R17, the diameter changes by -1.7%. A taller tire makes your speedometer read low — at a true 60 mph it would show roughly 61 mph. A shorter tire has the opposite effect, so the gauge reads high.
Use the tire calculator to compare LT265/70R17 against any other size and see the exact diameter and speedometer difference.
Frequently Asked Questions
What does LT265/70R17 mean?
LT265/70R17 means a 265 mm wide tire with a 70% sidewall aspect ratio mounted on a 17-inch rim. The aspect ratio is the sidewall height as a percentage of the width.
Can I plus-size from LT265/70R17?
Yes, as long as the replacement keeps the overall diameter close to stock so the speedometer stays accurate. Common plus-size moves from LT265/70R17 are 275/65R17, 275/65R18, 285/55R19.
Will LT265/70R17 affect my speedometer?
Only if it differs in diameter from your original size. A taller tire reads low; a shorter tire reads high. Compare the two sizes with the calculator to find the percentage.