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Kumho
Kumho KMH Ecsta STX (KL12) 275/55R20XL
Kumho KMH Ecsta STX (KL12) 275/55R20XL
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The Kumho Ecsta STX (KL12) in 275/55R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 275/55R20 means
In the size 275/55R20, 275 is the section width in millimeters (10.83 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 151.2 mm (5.95 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 31.91 inches, turning roughly 632 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.
The service description on this tire decodes to a load index of 117 — a maximum load of 2,833 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Specifications
| Size | 275/55R20XL |
| Tire Type | High Performance |
| Service Description | 117V |
| Load Index | 117 |
| Speed Rating | V |
| Load Range | XL |
| Section Width (mm) | 275 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 31.9 |
| Tread Depth (/32") | 11.5 |
| Treadwear | 420 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 420AA |
Frequently asked questions
What does 117V mean on the Kumho Ecsta STX (KL12)?
117V breaks down as load index 117 — rated for 2,833 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
What kind of tire is the Kumho Ecsta STX (KL12)?
The Kumho Ecsta STX (KL12) in 275/55R20 is a high performance tire.
What are the treadwear and warranty ratings on the Kumho Ecsta STX (KL12)?
This tire carries a treadwear grade of 420, traction grade A, temperature grade A under UTQG.
Keep shopping
Shop all 275/55R20 tires, see every Kumho Ecsta STX (KL12) size, or view all tires at ThreePiece.us.
- Brand:
- Kumho
- Model:
- KMH Ecsta STX (KL12)
- Size:
- 275/55R20XL
- Aspect Ratio:
- 55
- Load Index:
- 117
- Load Range:
- XL
- Section Width:
- 275
- Service Description:
- 117V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 31.9
- Tire Type:
- High Performance
- Traction:
- A
- Tread Wear:
- 420
- Tread Depth:
- 11.5
- UQTG:
- 420AA
- Warranty:
- N/A
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