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Nokian
Nokian Surpass AS01 255/45R20XL 105W - T433055
Nokian Surpass AS01 255/45R20XL 105W - T433055
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Looking for a 255/45R20 all season tire? The Nokian Surpass AS01 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 255/45R20 means
In the size 255/45R20, 255 is the section width in millimeters (10.04 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 114.8 mm (4.52 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 29.04 inches, turning roughly 695 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 105 — a maximum load of 2,039 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 | 255/45R20XL |
| Tire Type | All Season |
| Service Description | 105W |
| Load Index | 105 |
| Speed Rating | W |
| Load Range | Extra Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 45 |
| Overall Diameter (in) | 29.1 |
| Tread Depth (/32") | 10 |
| Warranty | 55K |
Frequently asked questions
What kind of tire is the Nokian Surpass AS01?
The Nokian Surpass AS01 in 255/45R20 is a all season tire.
What warranty does the Nokian Surpass AS01 carry?
The manufacturer's warranty on this tire is 55K.
What does 105W mean on the Nokian Surpass AS01?
105W breaks down as load index 105 — rated for 2,039 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Keep shopping
Shop all 255/45R20 tires, browse Nokian tires, see every Nokian Surpass AS01 size, or view all tires at ThreePiece.us.
- BRAND:
- Nokian
- Model:
- Surpass AS01
- Size:
- 255/45R20XL
- Aspect Ratio:
- 45
- Load Index:
- 105
- Load Range:
- Extra Load
- Section Width:
- 255
- Service Description:
- 105W
- Speed Index:
- W
- Tire Rim Diameter:
- 29.1
- Tire Type:
- All Season
- Tread Depth:
- 10
- Warranty:
- 55K
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