Write a Review
Pirelli
Pirelli Scorpion XTM AT LT245/75R17/10 121/118S - 4621800
Pirelli Scorpion XTM AT LT245/75R17/10 121/118S - 4621800
📧 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
OUT OF STOCK 
📧 Get Fitment Help
Verify parts fit & get product recommendations
The Pirelli Scorpion XTM AT in 245/75R17 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 245/75R17 means
In the size 245/75R17, 245 is the section width in millimeters (9.65 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 183.8 mm (7.23 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 31.47 inches, turning roughly 641 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 121 — a maximum load of 3,197 lbs per tire, or 118 (2,910 lbs) per tire when mounted as duals. The speed symbol S corresponds to a maximum sustained speed of 112 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | LT245/75R17/10 |
| Tire Type | All Season |
| Service Description | 121/118S |
| Load Index | 121/118 |
| Speed Rating | S |
| Load Range | E |
| Section Width (mm) | 245 |
| Aspect Ratio | 75 |
| Overall Diameter (in) | 31.5 |
| Tread Depth (/32") | 14 |
| Warranty | 55K |
Frequently asked questions
What does 121/118S mean on the Pirelli Scorpion XTM AT?
121/118S breaks down as load index 121 — rated for 3,197 lbs per tire (118, or 2,910 lbs, in dual fitment) — with an S speed rating, good for a maximum sustained 112 mph.
What kind of tire is the Pirelli Scorpion XTM AT?
The Pirelli Scorpion XTM AT in 245/75R17 is a all season tire.
What warranty does the Pirelli Scorpion XTM AT carry?
The manufacturer's warranty on this tire is 55K.
Keep shopping
Shop all 245/75R17 tires, browse Pirelli tires, see every Pirelli Scorpion XTM AT size, or view all tires at ThreePiece.us.
- BRAND:
- Pirelli
- Model:
- Scorpion XTM AT
- Size:
- LT245/75R17/10
- Aspect Ratio:
- 75
- Load Index:
- 121/118
- Load Range:
- E
- Section Width:
- 245
- Service Description:
- 121/118S
- Speed Index:
- S
- Tire Rim Diameter:
- 31.5
- Tire Type:
- All Season
- Tread Depth:
- 14
- 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