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Kumho
Kumho Ecsta STX KL12 275/55R18XL 114V - 2101383
Kumho Ecsta STX KL12 275/55R18XL 114V - 2101383
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The Kumho Ecsta STX KL12 in 275/55R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 275/55R18 means
In the size 275/55R18, 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 18 is the wheel diameter in inches. That works out to an overall diameter of about 29.91 inches, turning roughly 674 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 114 — a maximum load of 2,601 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 275/55R18XL |
| Tire Type | All Season |
| Service Description | 114V |
| Load Index | 114 |
| Speed Rating | V |
| Load Range | Extra Load |
| Section Width (mm) | 275 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 29.8 |
| Tread Depth (/32") | 11 |
| Treadwear | 420 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 420AA |
Frequently asked questions
What does 114V mean on the Kumho Ecsta STX KL12?
114V breaks down as load index 114 — rated for 2,601 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 275/55R18 is a all season 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
Browse Kumho tires, see every Kumho Ecsta STX KL12 size, or view all tires at ThreePiece.us.
- BRAND:
- Kumho
- Model:
- Ecsta STX KL12
- Size:
- 275/55R18XL
- Aspect Ratio:
- 55
- Load Index:
- 114
- Load Range:
- Extra Load
- Section Width:
- 275
- Service Description:
- 114V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 29.8
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 420
- Tread Depth:
- 11
- UQTG:
- 420AA
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