Driveguard Plus

About the Bridgestone Driveguard Plus

All-Season Passenger Car Touring tire with Run Flat Technology.

Features

* Full depth sipe technology* Open shoulder slots* Asymmetric pattern and inboard design* Full depth main grooves* 65,000 Mile Limited Treadwear Warranty

Benefits

* Helps improve wear and snow performance* Helps reduce the chance of hydroplaning when tires are worn* Delivers confident handling and a quiet ride* Provide consistent water evacuation

Understanding the 235/40RF18 XL size

In the size code 235/40R18, 235 is the section width in millimetres (about 9.3"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 94 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 25.4".

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 W certifies the tire to 168 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 Driveguard Plus is built for

Fitment category: Undefined.

Tread life and grip ratings

This tire carries a UTQG rating of 640 A A. The treadwear grade of 640 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 $206.24 per tire, a full set of four costs $824.96. That is about 29% above the average of the 101 tires we stock in this size, reflecting its position in the range. Backed by a 65,000-mile treadwear warranty, that works out to roughly $12.69 per 1,000 miles across the set.