Rebate
Hankook
Ventus S1 EVO 4 X K137A
275/40R21 XL
All-Season
$306.74/tire
$408.99
Set of 4: $1226.96
🚚 Standard shipping across the country — delivered with DHL in 2-6 business days. 🔒 SSL-secured checkout.
↩️ Free returns within 30 days — unmounted tires, prepaid label, no return shipping cost.
Specifications
| Size | 275/40R21 XL Ventus S1 Evo 4 X K137A (*) |
|---|---|
| Width | 275 mm |
| Aspect ratio | 40 |
| Rim diameter | R21 |
| Load index | 107 |
| Speed rating | Y |
| Load range | XL |
| Season | All-Season |
|---|---|
| UTQG | 180 A A |
| Tread depth | 7/32" |
| Weight | 32.6 lbs |
| Max pressure | 50 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
About the Hankook Ventus S1 EVO 4 X K137A
Summer Ultra High Performance Passenger Car/SUV tire. Original Equipment on BMW X5 PHEV.
Understanding the 275/40R21 XL size
In the size code 275/40R21, 275 is the section width in millimetres (about 10.8"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 110 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 29.7".
The load index 107 means each tire supports up to 2,149 lbs — about 8,596 lbs across a full set of four. The speed symbol Y certifies the tire to 186 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 Ventus S1 EVO 4 X K137A is built for
The Hankook Ventus S1 EVO 4 X K137A is an all-season tire, balancing dry grip, wet traction and tread life across spring, summer and autumn conditions. Fitment category: Passenger Car, SUV/CUV, Performance, UHP.
Tread life and grip ratings
This tire carries a UTQG rating of 180 A A. The treadwear grade of 180 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 $306.74 per tire, a full set of four costs $1226.96. That sits close to the average for the 37 tires we stock in this size.
Frequently asked questions
What does the tire size 275/40R21 mean?
275 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 110 mm), and R21 indicates radial construction for a 21-inch wheel. Overall diameter is approximately 29.7 inches.
What are the load and speed ratings of the Hankook Ventus S1 EVO 4 X K137A 275/40R21 XL?
Its load index of 107 allows up to 2,149 lbs per tire. Its speed rating of Y is certified to 186 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 Ventus S1 EVO 4 X K137A 275/40R21 XL tires cost?
A single tire is $306.74 and a set of four is $1226.96.
Does the Ventus S1 EVO 4 X K137A come in other sizes?
Yes — we stock 3 additional Ventus S1 EVO 4 X K137A sizes besides 275/40R21 XL. Fit only a size approved for your vehicle.
