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Ironman
Ironman IRON All Country AT2 LT275/60R20/10
Ironman IRON All Country AT2 LT275/60R20/10
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The Ironman All Country AT2 in 275/60R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 275/60R20 means
In the size 275/60R20, 275 is the section width in millimeters (10.83 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 165.0 mm (6.50 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 32.99 inches, turning roughly 611 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 34.09 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 123 — a maximum load of 3,417 lbs per tire, or 120 (3,086 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 | LT275/60R20/10 |
| Tire Type | All Terrain |
| Service Description | 123/120S |
| Load Index | 123/120 |
| Speed Rating | S |
| Load Range | E |
| Section Width (mm) | 275 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 34.09 |
| Tread Depth (/32") | 14 |
Frequently asked questions
What does 123/120S mean on the Ironman All Country AT2?
123/120S breaks down as load index 123 — rated for 3,417 lbs per tire (120, or 3,086 lbs, in dual fitment) — with an S speed rating, good for a maximum sustained 112 mph.
What kind of tire is the Ironman All Country AT2?
The Ironman All Country AT2 in 275/60R20 is a all terrain tire.
Will 275/60R20 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 275/60R20, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 275/60R20 tire in stock to compare options.
Keep shopping
Shop all 275/60R20 tires, see every Ironman All Country AT2 size, explore all terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Ironman
- Model:
- IRON All Country AT2
- Size:
- LT275/60R20/10
- Aspect Ratio:
- 60
- Load Index:
- 123/120
- Load Range:
- E
- Section Width:
- 275
- Service Description:
- 123/120S
- Speed Index:
- S
- Temperature:
- N/A
- Tire Rim Diameter:
- 34.09
- Tire Type:
- All Terrain
- Traction:
- N/A
- Tread Wear:
- N/A
- Tread Depth:
- 14
- UQTG:
- N/A
- Warranty:
- N/A
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