Rebate
Goodyear
Assurance Rangemax
255/40R21 XL
All-Season
M+S
$278.99/tire
$371.99
Set of 4: $1115.96
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↩️ Free returns within 30 days — unmounted tires, prepaid label, no return shipping cost.
Specifications
| Size | 255/40R21 XL Assurance Rangemax |
|---|---|
| Width | 255 mm |
| Aspect ratio | 40 |
| Rim diameter | R21 |
| Load index | 102 |
| Speed rating | H |
| Load range | XL |
| Season | All-Season |
|---|---|
| UTQG | 540 A A |
| Severe snow (3PMSF) | No |
| Run-flat | No |
About the Goodyear Assurance Rangemax
All-Season Passenger Car/SUV Touring tire.
Features
* Engineered for dependable performance in varying weather conditions* Advanced tread compound* M+S Rated
Benefits
* Delivers reliable traction on dry, wet and lightly snow-covered roads* Designed to resist wear while minimizing rolling resistance, for better fuel efficiency and longer tread life* For a quieter, more comfortable ride
Understanding the 255/40R21 XL size
In the size code 255/40R21, 255 is the section width in millimetres (about 10"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 102 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 29".
The load index 102 means each tire supports up to 1,874 lbs — about 7,496 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 Goodyear Assurance Rangemax is built for
The Goodyear Assurance Rangemax 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, CAR, SUV/CUV, Performance, Touring.
Tread life and grip ratings
This tire carries a UTQG rating of 540 A A. The treadwear grade of 540 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 $278.99 per tire, a full set of four costs $1115.96. That is about 14% below the average price of the 56 tires we stock in this size.
Frequently asked questions
What does the tire size 255/40R21 mean?
255 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 102 mm), and R21 indicates radial construction for a 21-inch wheel. Overall diameter is approximately 29 inches.
What are the load and speed ratings of the Goodyear Assurance Rangemax 255/40R21 XL?
Its load index of 102 allows up to 1,874 lbs per tire. Its speed rating of H is certified to 130 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 Goodyear Assurance Rangemax 255/40R21 XL tires cost?
A single tire is $278.99 and a set of four is $1115.96.
Does the Assurance Rangemax come in other sizes?
Yes — we stock 2 additional Assurance Rangemax sizes besides 255/40R21 XL. Fit only a size approved for your vehicle.
