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Ironman
Ironman IRON All Country HT 255/60R19
Ironman IRON All Country HT 255/60R19
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Shop the Ironman All Country HT 255/60R19 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 255/60R19 means
In the size 255/60R19, 255 is the section width in millimeters (10.04 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 153.0 mm (6.02 in) — R denotes radial construction, and 19 is the wheel diameter in inches. That works out to an overall diameter of about 31.05 inches, turning roughly 650 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 31.22 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 109 — a maximum load of 2,271 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 255/60R19 |
| Tire Type | Highway |
| Service Description | 109H |
| Load Index | 109 |
| Speed Rating | H |
| Load Range | SL |
| Section Width (mm) | 255 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 31.22 |
| Tread Depth (/32") | 10.5 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 500AB |
Frequently asked questions
What are the treadwear and warranty ratings on the Ironman All Country HT?
This tire carries a treadwear grade of 500, traction grade A, temperature grade B under UTQG.
What does 109H mean on the Ironman All Country HT?
109H breaks down as load index 109 — rated for 2,271 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?
The Ironman All Country HT in 255/60R19 is a highway tire.
Keep shopping
Shop all 255/60R19 tires, see every Ironman All Country HT size, or view all tires at ThreePiece.us.
- BRAND:
- Ironman
- Model:
- IRON All Country HT
- Size:
- 255/60R19
- Aspect Ratio:
- 60
- Load Index:
- 109
- Load Range:
- SL
- Section Width:
- 255
- Service Description:
- 109H
- Speed Index:
- H
- Temperature:
- B
- Tire Rim Diameter:
- 31.22
- Tire Type:
- Highway
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 10.5
- UQTG:
- 500AB
- Warranty:
- N/A
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