LT355/65R18 in inches

How tall is a LT355 65R18 tire?

When converted to inches, the equivalent of a LT355/65R18 tire size is 36.2x14R18. It means that:

  • height overall (or diameter) is 36.2 inches
  • tread width is 14 inches
  • wheel diameter is 18 inches

Learn more

LT355/65R18 tire size in inches
LT355/65R18 tire size chart

LT355/65R18 tire size in inches

LT355/65R18 Height / overall diameter: 36.2 inches
Height / overall diameter
36.2 inches
LT355/65R18 Tread width: 14 inches
Tread width
14 inches
LT355/65R18 Sidewall: 9.1 inches
Sidewall
9.1 inches
LT355/65R18 Wheel diameter: 18 inches
Wheel diameter
18 inches
LT355/65R18 Circumference: 113.7 inches
Circumference
113.7 inches
LT355/65R18 Revolutions: 558 per mile
Revolutions
558 per mile

LT355/65R18 — what does it mean?

  • LT means "light truck"
  • 355 stands for tread width in millimeters
  • 65 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

LT355/65R18 tire code
LT355/65R18 tire code

How to convert LT355 65R18 to inches?

First of all, we need to divide 355 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 14″. Then, 65% of the 14″ will result in 9.1″ 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 36.2″ total tire diameter (or height).

For your convenience, below is a table for LT355/65R18 conversion to inches:

Inches Metric
Overall diameter (height) 36.2″ 919 mm
Tread width 14″ 355 mm
Wheel diameter 18″ 919 mm
Sidewall height 9.1″ 231 mm
Circumference 113.7″ 2886 mm
Revolutions 558 / ml 347 / km

Alternatives to a LT355/65R18 tire

If you're looking to upsize your LT355 65R18 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
315/70R18 35.4″ -0.55% 12.4″ 18″
275/80R18 35.4″ -0.55% 10.8″ 18″
305/75R18 36″ -0.14% 12″ 18″
355/65R18 36.2″ 0% 14″ 18″
375/60R18 35.8″ -0.27% 14.8″ 18″
LT275/80R18 35.4″ -0.55% 10.8″ 18″
LT305/75R18 36″ -0.14% 12″ 18″
LT315/70R18 35.4″ -0.55% 12.4″ 18″
LT375/60R18 35.8″ -0.27% 14.8″ 18″