Adventuro HT

About the GT Radial Adventuro HT

All-Season Highway-Terrain Passenger Light Truck/SUV tire.

Features

* Full depth wave sipes* Chamfered tread edges* Dual sidewall design* Continuous center rib* Harmonically optimized pitch sequencing* UTQG: 600 A B (P-Metric)* M+S Rated* 60,000 Mile Limited Warranty (P-Metric)* 50,000 Mile Limited Warranty (LT-Metric)* 30 Day/500 Mile Test Drive Satisfaction Guarantee* Road Hazard Warranty

Benefits

* Additional biting edges for improved wet and snow traction* Increased displacement of water to reduce the risk of hydroplaning* Two choices for the perfect look* Improved braking performance and excellent stability at highway speeds* Reduced road noise generation for a quieter ride

Understanding the 255/55R18 XL size

In the size code 255/55R18, 255 is the section width in millimetres (about 10"). 55 is the aspect ratio — the sidewall height is 55% of the width, or roughly 140.3 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 29".

The load index 109 means each tire supports up to 2,271 lbs — about 9,084 lbs across a full set of four. The speed symbol V certifies the tire to 149 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

Tread life and grip ratings

This tire carries a UTQG rating of 600 A B. The treadwear grade of 600 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade A measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade B reflects heat resistance at sustained speed (A is highest).

Price and value

At $128.99 per tire, a full set of four costs $515.96. That is about 32% below the average price of the 83 tires we stock in this size. Backed by a 60,000-mile treadwear warranty, that works out to roughly $8.60 per 1,000 miles across the set.