All Season

About the Firestone All Season

All-Season Passenger Car tire.

Features

* Deep sipes* Specially engineered* 55,000 Mile Limited Warranty (CUV intended sizes)* 65,000 Mile Limited Warranty (All other sizes)* Gold Pledge Limited Warranty* Buy and Try 30-Day Guarantee

Benefits

* Provide wet and all-season performance* To provide performance in wet, dry and snowy conditions with traction and handling all year long

Understanding the 255/55R18 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 H certifies the tire to 130 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Firestone All Season is built for

The Firestone All Season is an all-season tire, balancing dry grip, wet traction and tread life across spring, summer and autumn conditions. It carries an M+S (mud and snow) marking for light winter service. Fitment category: Passenger Car, SUV/CUV, Performance, Touring.

Tread life and grip ratings

This tire carries a UTQG rating of 560 A B. The treadwear grade of 560 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 $163.49 per tire, a full set of four costs $653.96. That is about 14% below the average price of the 83 tires we stock in this size. Backed by a 55,000-mile treadwear warranty, that works out to roughly $11.89 per 1,000 miles across the set.