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Kumho
Kumho Ecsta PS91 255/35ZR18XL 94(Y) - 2167293
Kumho Ecsta PS91 255/35ZR18XL 94(Y) - 2167293
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The Kumho Ecsta PS91 in 255/35R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 255/35R18 means
In the size 255/35R18, 255 is the section width in millimeters (10.04 in), 35 is the aspect ratio — the sidewall stands 35% as tall as the tire is wide, or 89.2 mm (3.51 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 25.03 inches, turning roughly 806 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 94 — a maximum load of 1,477 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 255/35ZR18XL |
| Tire Type | Summer |
| Service Description | 94Y |
| Load Index | 94 |
| Speed Rating | Y |
| Load Range | Extra Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 35 |
| Overall Diameter (in) | 25 |
| Tread Depth (/32") | 9.5 |
| Treadwear | 260 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 260AAA |
Frequently asked questions
What does 94Y mean on the Kumho Ecsta PS91?
94Y breaks down as load index 94 — rated for 1,477 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
What kind of tire is the Kumho Ecsta PS91?
The Kumho Ecsta PS91 in 255/35R18 is a summer tire.
What are the treadwear and warranty ratings on the Kumho Ecsta PS91?
This tire carries a treadwear grade of 260, traction grade AA, temperature grade A under UTQG.
Keep shopping
Shop all 255/35R18 tires, browse Kumho tires, see every Kumho Ecsta PS91 size, or view all tires at ThreePiece.us.
- BRAND:
- Kumho
- Model:
- Ecsta PS91
- Size:
- 255/35ZR18XL
- Aspect Ratio:
- 35
- Load Index:
- 94
- Load Range:
- Extra Load
- Section Width:
- 255
- Service Description:
- 94Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 25
- Tire Type:
- Summer
- Traction:
- AA
- Tread Wear:
- 260
- Tread Depth:
- 9.5
- UQTG:
- 260AAA
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