LT345/60R18 — what does it mean?
- LT means "light truck"
- 345 stands for tread width in millimeters
- 60 is an aspect ration between the tread width and the sidewall in percents
- R means that the tire has a radial construction
- 18 is a wheel diameter (or rim) in inches
How to convert LT345 60R18 to inches?
First of all, we need to divide 345 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 13.6″. Then, 60% of the 13.6″ will result in 8.1″ sidewall.
To get the total height or tire diameter, we need to sum the 18″ rim diameter with two of the sidewall heights. It will result in a 34.2″ total tire diameter (or height).
For your convenience, below is a table for LT345/60R18 conversion to inches:
| Inches | Metric | |
|---|---|---|
| Overall diameter (height) | 34.2″ | 869 mm |
| Tread width | 13.6″ | 345 mm |
| Wheel diameter | 18″ | 869 mm |
| Sidewall height | 8.1″ | 207 mm |
| Circumference | 107.4″ | 2729 mm |
| Revolutions | 589 / ml | 366 / km |
Alternatives to a LT345/60R18 tire
If you're looking to upsize your LT345 60R18 tires, try to stay within 3% deviation of an overall diameter for safety reasons.
| Tire | Tire diameter | Width | Wheel Size |
|---|---|---|---|
| 325/65R18 | 34.6″ 0.29% | 12.8″ | 18″ |
| LT325/65R18 | 34.6″ 0.29% | 12.8″ | 18″ |
| 285/75R18 | 34.8″ 0.43% | 11.2″ | 18″ |
| 285/70R18 | 33.8″ -0.29% | 11.2″ | 18″ |
| 295/70R18 | 34.2″ 0% | 11.6″ | 18″ |
| 305/65R18 | 33.6″ -0.46% | 12″ | 18″ |
| LT295/70R18 | 34.2″ 0% | 11.6″ | 18″ |
| 305/70R18 | 34.8″ 0.43% | 12″ | 18″ |
| 325/60R18 | 33.4″ -0.61% | 12.8″ | 18″ |
| 345/60R18 | 34.2″ 0% | 13.6″ | 18″ |