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Ironman
Ironman All Country HT 4S 275/60R20 115H - 99042.2
Ironman All Country HT 4S 275/60R20 115H - 99042.2
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The Ironman All Country HT 4S 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 service description on this tire decodes to a load index of 115 — a maximum load of 2,679 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 275/60R20 |
| Tire Type | All Season |
| Service Description | 115H |
| Load Index | 115 |
| Speed Rating | H |
| Load Range | Standard Load |
| Section Width (mm) | 275 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 32.99 |
| Tread Depth (/32") | 11 |
| Treadwear | 600 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 600AB |
| Warranty | 55K |
Frequently asked questions
What does 115H mean on the Ironman All Country HT 4S?
115H breaks down as load index 115 — rated for 2,679 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Ironman All Country HT 4S?
The Ironman All Country HT 4S in 275/60R20 is a all season tire.
What are the treadwear and warranty ratings on the Ironman All Country HT 4S?
This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 55K.
Keep shopping
Shop all 275/60R20 tires, browse Ironman tires, see every Ironman All Country HT 4S size, or view all tires at ThreePiece.us.
- BRAND:
- Ironman
- Model:
- All Country HT 4S
- Size:
- 275/60R20
- Aspect Ratio:
- 60
- Load Index:
- 115
- Load Range:
- Standard Load
- Section Width:
- 275
- Service Description:
- 115H
- Speed Index:
- H
- Temperature:
- B
- Tire Rim Diameter:
- 32.99
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 600
- Tread Depth:
- 11
- UQTG:
- 600AB
- Warranty:
- 55K
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