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Nokian
Nokian Surpass AS01 255/40R20XL 101W - T433072
Nokian Surpass AS01 255/40R20XL 101W - T433072
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The Nokian Surpass AS01 in 255/40R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 255/40R20 means
In the size 255/40R20, 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 20 is the wheel diameter in inches. That works out to an overall diameter of about 28.03 inches, turning roughly 719 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 101 — a maximum load of 1,819 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 255/40R20XL |
| Tire Type | All Season |
| Service Description | 101W |
| Load Index | 101 |
| Speed Rating | W |
| Load Range | Extra Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 28 |
| Tread Depth (/32") | 10 |
| Warranty | 55K |
Frequently asked questions
What does 101W mean on the Nokian Surpass AS01?
101W breaks down as load index 101 — rated for 1,819 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the Nokian Surpass AS01?
The Nokian Surpass AS01 in 255/40R20 is a all season tire.
What warranty does the Nokian Surpass AS01 carry?
The manufacturer's warranty on this tire is 55K.
Keep shopping
Shop all 255/40R20 tires, browse Nokian tires, see every Nokian Surpass AS01 size, or view all tires at ThreePiece.us.
- BRAND:
- Nokian
- Model:
- Surpass AS01
- Size:
- 255/40R20XL
- Aspect Ratio:
- 40
- Load Index:
- 101
- Load Range:
- Extra Load
- Section Width:
- 255
- Service Description:
- 101W
- Speed Index:
- W
- Tire Rim Diameter:
- 28
- Tire Type:
- All Season
- Tread Depth:
- 10
- Warranty:
- 55K
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