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Nexen
Nexen NEX N'Fera SU1 255/40ZR17XL
Nexen NEX N'Fera SU1 255/40ZR17XL
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Looking for a 255/40R17 high performance tire? The Nexen N'Fera SU1 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 255/40R17 means
In the size 255/40R17, 255 is the section width in millimeters (10.04 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 102.0 mm (4.02 in) — R denotes radial construction, and 17 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 manufacturer lists the overall diameter of this specific tire as 17 inches — when clearance is tight, go by the published figure rather than the nominal size math.
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 W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 255/40ZR17xL |
| Tire Type | High Performance |
| Service Description | 94W |
| Load Index | 94 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 255 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 17 |
| Tread Depth (/32") | 9.5 |
| Treadwear | 300 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 300AAA |
| Warranty | 25K |
Frequently asked questions
What kind of tire is the Nexen N'Fera SU1?
The Nexen N'Fera SU1 in 255/40R17 is a high performance tire.
What are the treadwear and warranty ratings on the Nexen N'Fera SU1?
This tire carries a treadwear grade of 300, traction grade AA, temperature grade A under UTQG. The manufacturer's warranty is 25K.
What does 94W mean on the Nexen N'Fera SU1?
94W breaks down as load index 94 — rated for 1,477 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Keep shopping
See every Nexen N'Fera SU1 size, or view all tires at ThreePiece.us.
- Brand:
- Nexen
- Model:
- NEX N'Fera SU1
- Size:
- 255/40ZR17xL
- Aspect Ratio:
- 40
- Load Index:
- 94
- Load Range:
- XL
- Section Width:
- 255
- Service Description:
- 94W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 17
- Tire Type:
- High Performance
- Traction:
- AA
- Tread Wear:
- 300
- Tread Depth:
- 9.5
- UQTG:
- 300AAA
- Warranty:
- 25K
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