Write a Review
Nokian
Nokian Surpass AS01 225/50R18XL 99W - T433028
Nokian Surpass AS01 225/50R18XL 99W - T433028
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
IN STOCK (12 wheels)
📧 Get Fitment Help
Verify parts fit & get product recommendations
Looking for a 225/50R18 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 225/50R18 means
In the size 225/50R18, 225 is the section width in millimeters (8.86 in), 50 is the aspect ratio — the sidewall stands 50% as tall as the tire is wide, or 112.5 mm (4.43 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 26.86 inches, turning roughly 751 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 99 — a maximum load of 1,709 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 | 225/50R18XL |
| Tire Type | All Season |
| Service Description | 99W |
| Load Index | 99 |
| Speed Rating | W |
| Load Range | Extra Load |
| Section Width (mm) | 225 |
| Aspect Ratio | 50 |
| Overall Diameter (in) | 26.9 |
| Tread Depth (/32") | 10 |
| Warranty | 55K |
Frequently asked questions
What kind of tire is the Nokian Surpass AS01?
The Nokian Surpass AS01 in 225/50R18 is a all season tire.
What warranty does the Nokian Surpass AS01 carry?
The manufacturer's warranty on this tire is 55K.
What does 99W mean on the Nokian Surpass AS01?
99W breaks down as load index 99 — rated for 1,709 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Keep shopping
Shop all 225/50R18 tires, browse Nokian tires, see every Nokian Surpass AS01 size, or view all tires at ThreePiece.us.
- BRAND:
- Nokian
- Model:
- Surpass AS01
- Size:
- 225/50R18XL
- Aspect Ratio:
- 50
- Load Index:
- 99
- Load Range:
- Extra Load
- Section Width:
- 225
- Service Description:
- 99W
- Speed Index:
- W
- Tire Rim Diameter:
- 26.9
- Tire Type:
- All Season
- Tread Depth:
- 10
- Warranty:
- 55K
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review