Nexen Roadian HTX RH5 255/65 R18 111T RF

Check Price

The Nexen Roadian HTX RH5 is an all-season tire designed for light trucks and SUVs. It features a symmetric tread pattern with wide circumferential grooves for improved water drainage and traction in wet conditions. The tire also has a reinforced sidewall for added strength and durability. The Roadian HTX RH5 is a highway terrain tire that is designed for use in both wet and dry conditions. The tire has a tread pattern that is designed to provide good traction in both mud and snow.

What does 255/65R18 mean?


The tire width is 255mm.


The aspect ratio of the tire is 65. Aspect ratio is the relative height of tire sidewall. The number refers to the percentage of sidewall height in relation to tire width.


The letter in the middle refers to tire construction. Practically all tires sold for cars are radials.

Sometimes you also see tires with RF or ZR. RF indicates the tire is run flat, whereas ZR means the tire has speed rating higher than V. These tires are also radials, as the R indicates.


Rim diameter for the tire.

255/65R18 111T tire size

The width of 255/65R18 111T tire is stated in millimeters and sidewall height in percentages. In this table you’ll find out the 255/65R18 111T tire size in inches as well as few additional metrics:

In inches In millimeters

Section Width

10.0″ 255mm

Sidewall height

6.5″ 166mm

Diameter / Height

31.1″ 789mm


97.6″ 2478mm

Rim Diameter



650 per mile 404 per kilometer

Rim Size for 255/65R18 111T Tires

Recommended rim sizes for 255/65R18 111T tire:

Diameter Width Range
18″ 7-9″

What does 111T mean?

The load index 111 means that the tire has been designed to support 2403 lbs or 1090 kg.

The speed index T means that the tire has been designed to be used in speed up to 118 mph or 190 kph.

This size tire is usually used on an SUV.


Nexen Roadian HTX RH5 is an all-season highway tire designed for light trucks. It features an aggressive tread pattern and a silica compound that provides excellent traction and handling in wet and dry conditions. The Roadian HTX RH5 is also backed by a 60,000 mile treadwear warranty.

Tire Specification

Brand: Nexen
Model: Roadian HTX RH5
Season: Summer
Size: 255/65 R18
Load Index: 111 — 1090 kg | x4 - 4360 kg
Speed Index: T — 190 km\h
Car Type:SUV
Road: On/Off road
XL / Extra Load: No
RunFlat technology: Yes
Commercial / Reinforced: No
Year: 2018