Write a Review
Ironman
Ironman IRON All Country M/T LT245/75R17/10
Ironman IRON All Country M/T LT245/75R17/10
📧 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 Ironman All Country M/T 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 manufacturer lists the overall diameter of this specific tire as 31.73 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 121 — a maximum load of 3,197 lbs per tire, or 118 (2,910 lbs) per tire when mounted as duals. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | LT245/75R17/10 |
| Tire Type | Mud Terrain |
| Service Description | 121/118Q |
| Load Index | 121/118 |
| Speed Rating | Q |
| Load Range | E |
| Section Width (mm) | 245 |
| Aspect Ratio | 75 |
| Overall Diameter (in) | 31.73 |
| Tread Depth (/32") | 18 |
Frequently asked questions
What does 121/118Q mean on the Ironman All Country M/T?
121/118Q breaks down as load index 121 — rated for 3,197 lbs per tire (118, or 2,910 lbs, in dual fitment) — with a Q speed rating, good for a maximum sustained 99 mph.
What kind of tire is the Ironman All Country M/T?
The Ironman All Country M/T in 245/75R17 is a mud terrain tire.
Will 245/75R17 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 245/75R17, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 245/75R17 tire in stock to compare options.
Keep shopping
Shop all 245/75R17 tires, see every Ironman All Country M/T size, explore mud terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Ironman
- Model:
- IRON All Country M/T
- Size:
- LT245/75R17/10
- Aspect Ratio:
- 75
- Load Index:
- 121/118
- Load Range:
- E
- Section Width:
- 245
- Service Description:
- 121/118Q
- Speed Index:
- Q
- Temperature:
- N/A
- Tire Rim Diameter:
- 31.73
- Tire Type:
- Mud Terrain
- Traction:
- N/A
- Tread Wear:
- N/A
- Tread Depth:
- 18
- UQTG:
- N/A
- Warranty:
- N/A
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