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Ironman
Ironman RB SUV 255/70R18 113H - 98645
Ironman RB SUV 255/70R18 113H - 98645
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Shop the Ironman RB SUV 255/70R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 255/70R18 means
In the size 255/70R18, 255 is the section width in millimeters (10.04 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 178.5 mm (7.03 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.06 inches, turning roughly 629 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 113 — a maximum load of 2,535 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 255/70R18 |
| Tire Type | All Season |
| Service Description | 113H |
| Load Index | 113 |
| Speed Rating | H |
| Load Range | Standard Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 70 |
| Overall Diameter (in) | 32.09 |
| Tread Depth (/32") | 9.8 |
| Treadwear | 460 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 460AB |
| Warranty | 55K |
Frequently asked questions
What are the treadwear and warranty ratings on the Ironman RB SUV?
This tire carries a treadwear grade of 460, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 55K.
What does 113H mean on the Ironman RB SUV?
113H breaks down as load index 113 — rated for 2,535 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Ironman RB SUV?
The Ironman RB SUV in 255/70R18 is a all season tire.
Keep shopping
Shop all 255/70R18 tires, browse Ironman tires, see every Ironman RB SUV size, or view all tires at ThreePiece.us.
- BRAND:
- Ironman
- Model:
- RB SUV
- Size:
- 255/70R18
- Aspect Ratio:
- 70
- Load Index:
- 113
- Load Range:
- Standard Load
- Section Width:
- 255
- Service Description:
- 113H
- Speed Index:
- H
- Temperature:
- B
- Tire Rim Diameter:
- 32.09
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 460
- Tread Depth:
- 9.8
- UQTG:
- 460AB
- Warranty:
- 55K
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