Rebate
Hankook
ION Supreme AS SUV (IH31A)
275/45R21 XL
$383.99/tire
$511.99
Set of 4: $1535.96
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↩️ Free returns within 30 days — unmounted tires, prepaid label, no return shipping cost.
Specifications
| Size | 275/45R21 XL Ion Supreme AS Suv (IH31A) |
|---|---|
| Width | 275 mm |
| Aspect ratio | 45 |
| Rim diameter | R21 |
| Load index | 110 |
| Speed rating | V |
| Load range | XL |
| Tread depth | 8.5/32" |
|---|---|
| Weight | 34.1 lbs |
| Max pressure | 50 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
About the Hankook ION Supreme AS SUV (IH31A)
All-Season Highway-Terrain Passenger SUV Tire for Electric Vehicles.
Understanding the 275/45R21 XL size
In the size code 275/45R21, 275 is the section width in millimetres (about 10.8"). 45 is the aspect ratio — the sidewall height is 45% of the width, or roughly 123.8 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 30.7".
The load index 110 means each tire supports up to 2,337 lbs — about 9,348 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 Hankook ION Supreme AS SUV (IH31A) is built for
Fitment category: Passenger Car, SUV/CUV.
Price and value
At $383.99 per tire, a full set of four costs $1535.96. That is about 24% above the average of the 73 tires we stock in this size, reflecting its position in the range.
Frequently asked questions
What does the tire size 275/45R21 mean?
275 is the section width in millimetres, 45 is the aspect ratio (sidewall height as a percentage of width, about 123.8 mm), and R21 indicates radial construction for a 21-inch wheel. Overall diameter is approximately 30.7 inches.
What are the load and speed ratings of the Hankook ION Supreme AS SUV (IH31A) 275/45R21 XL?
Its load index of 110 allows up to 2,337 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 Hankook ION Supreme AS SUV (IH31A) 275/45R21 XL tires cost?
A single tire is $383.99 and a set of four is $1535.96.
Does the ION Supreme AS SUV (IH31A) come in other sizes?
Yes — we stock 1 additional ION Supreme AS SUV (IH31A) size besides 275/45R21 XL. Fit only a size approved for your vehicle.
