Ultraweather

About the Bridgestone Ultraweather

All-Weather Grand Touring Passenger Car, CUV and SUV tire.

Features

* Open shoulder slots* Circumferential grooves* Biting edges* Precision-tuned tread pattern* PeakLife™ polymer compound* Carries the Three-Peak Mountain Snowflake (3PMSF) symbol* 60,000 Mile Limited Mileage Warranty* 90-Day Buy & Try Guarantee

Benefits

* To help evacuate water for confident wet traction* Provides winter snow performance without sacrifice* Help limit noise and vibration for a quieter, more comfortable ride* Help resist tread wear for longer mileage* Meets the required performance criteria for Use in Severe Snow Conditions

Understanding the 215/55R18 size

In the size code 215/55R18, 215 is the section width in millimetres (about 8.5"). 55 is the aspect ratio — the sidewall height is 55% of the width, or roughly 118.3 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 27.3".

The load index 95 means each tire supports up to 1,521 lbs — about 6,084 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 Bridgestone Ultraweather is built for

The Bridgestone Ultraweather is a winter tire, using a cold-weather compound that stays pliable below 45°F (7°C) where all-season rubber hardens and loses grip. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it passed a standardised severe-snow traction test. It is classified for highway terrain(h/t) use.

Tread life and grip ratings

This tire carries a UTQG rating of 600 A A. 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 A reflects heat resistance at sustained speed (A is highest).

Price and value

At $174.74 per tire, a full set of four costs $698.96. That is about 22% above the average of the 63 tires we stock in this size, reflecting its position in the range. Backed by a 60,000-mile treadwear warranty, that works out to roughly $11.65 per 1,000 miles across the set.