Nexen NEX Roadian ATX 225/55R18

Looking for a 225/55R18 all terrain tire? The Nexen Roadian ATX is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 225/55R18 means

In the size 225/55R18, 225 is the section width in millimeters (8.86 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 123.8 mm (4.87 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 27.74 inches, turning roughly 727 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.

The manufacturer lists the overall diameter of this specific tire as 18 inches — when clearance is tight, go by the published figure rather than the nominal size math.

The service description on this tire decodes to a load index of 98 — a maximum load of 1,653 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.

Load Range B corresponds to a 4-ply rating.

Specifications

Frequently asked questions

What kind of tire is the Nexen Roadian ATX?

The Nexen Roadian ATX in 225/55R18 is a all terrain tire.

What are the treadwear and warranty ratings on the Nexen Roadian ATX?

This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 65K.

What does 98V mean on the Nexen Roadian ATX?

98V breaks down as load index 98 — rated for 1,653 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.

Keep shopping

Shop all 225/55R18 tires, see every Nexen Roadian ATX size, explore all terrain tires, or view all tires at ThreePiece.us.