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Driveguard Plus
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Specifications
| Size | 235/50RF20 Driveguard Plus Run Flat |
|---|---|
| Width | 235 mm |
| Aspect ratio | 50 |
| Rim diameter | R20 |
| Load index | 100 |
| Speed rating | V |
| Load range | SL |
| Season | All-Season |
|---|---|
| UTQG | 640 A A |
| Treadwear warranty | 65,000 miles |
| Tread depth | 9/32" |
| Weight | 33.9 lbs |
| Max pressure | 51 psi |
| Severe snow (3PMSF) | No |
| Run-flat | Yes |
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 235/50RF20 size
In the size code 235/50R20, 235 is the section width in millimetres (about 9.3"). 50 is the aspect ratio — the sidewall height is 50% of the width, or roughly 117.5 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 29.3".
The load index 100 means each tire supports up to 1,764 lbs — about 7,056 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.
What the Bridgestone Driveguard Plus is built for
The Bridgestone Driveguard Plus 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. Run-flat construction lets you keep driving a limited distance at reduced speed after a loss of pressure. Fitment category: Passenger Car, CAR, Performance, Touring.
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 $262.49 per tire, a full set of four costs $1049.96. That sits close to the average for the 30 tires we stock in this size. Backed by a 65,000-mile treadwear warranty, that works out to roughly $16.15 per 1,000 miles across the set.
Frequently asked questions
What does the tire size 235/50R20 mean?
235 is the section width in millimetres, 50 is the aspect ratio (sidewall height as a percentage of width, about 117.5 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 29.3 inches.
What are the load and speed ratings of the Bridgestone Driveguard Plus 235/50RF20?
Its load index of 100 allows up to 1,764 lbs per tire. Its speed rating of V is certified to 149 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.
How much does a set of 4 Bridgestone Driveguard Plus 235/50RF20 tires cost?
A single tire is $262.49 and a set of four is $1049.96, covered by a 65,000-mile treadwear warranty.
Is the Bridgestone Driveguard Plus a run-flat tire?
Yes. Run-flat construction supports the vehicle for a limited distance at reduced speed after a loss of air pressure, so you can reach a service point without an immediate roadside change.
Does the Driveguard Plus come in other sizes?
Yes — we stock 39 additional Driveguard Plus sizes besides 235/50RF20. Fit only a size approved for your vehicle.