LT295/70R18 Tire Size
LT295/70R18 diameter, sidewall, revolutions per mile, and plus-sizing options.
The LT295/70R18 tire size breaks down as: 295 mm section width, 70% aspect ratio, and a 18-inch rim. Below are its real, calculated dimensions.
LT295/70R18 Calculated Dimensions
| Metric | Value |
|---|---|
| Overall diameter | 34.3 in (870 mm) |
| Sidewall height | 8.1 in (207 mm) |
| Circumference | 107.6 in (2734 mm) |
| Revolutions per mile | 589 |
Typical Fitment
LT295/70R18 is most often found on off-road pickups. Always confirm against the door-jamb placard or owner manual before fitting.
Plus-Sizing Alternatives
These sizes keep the overall diameter close to LT295/70R18, so speedometer and gearing stay near stock:
| Size | Diameter | Diameter change |
|---|---|---|
| 305/70R18 | 34.81 in | +1.6% |
| 305/65R19 | 34.61 in | +1.0% |
| 315/55R20 | 33.64 in | -1.8% |
Speedometer Note
If you fit a 305/70R18 instead of LT295/70R18, the diameter changes by +1.6%. A taller tire makes your speedometer read low — at a true 60 mph it would show roughly 59 mph. A shorter tire has the opposite effect, so the gauge reads high.
Use the tire calculator to compare LT295/70R18 against any other size and see the exact diameter and speedometer difference.
Frequently Asked Questions
What does LT295/70R18 mean?
LT295/70R18 means a 295 mm wide tire with a 70% sidewall aspect ratio mounted on a 18-inch rim. The aspect ratio is the sidewall height as a percentage of the width.
Can I plus-size from LT295/70R18?
Yes, as long as the replacement keeps the overall diameter close to stock so the speedometer stays accurate. Common plus-size moves from LT295/70R18 are 305/70R18, 305/65R19, 315/55R20.
Will LT295/70R18 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.