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Arroyo
Arroyo Tamarock AT 275/55R20
Arroyo Tamarock AT 275/55R20
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Shop the Arroyo Tamarock AT 275/55R20 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 275/55R20 means
In the size 275/55R20, 275 is the section width in millimeters (10.83 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 151.2 mm (5.95 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 31.91 inches, turning roughly 632 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 20 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 117 — a maximum load of 2,833 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 275/55R20 |
| Tire Type | All Terrain |
| Service Description | 117H |
| Load Index | 117 |
| Speed Rating | H |
| Load Range | XL |
| Section Width (mm) | 275 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 20 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500 A A |
Frequently asked questions
What are the treadwear and warranty ratings on the Arroyo Tamarock AT?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.
What does 117H mean on the Arroyo Tamarock AT?
117H breaks down as load index 117 — rated for 2,833 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Arroyo Tamarock AT?
The Arroyo Tamarock AT in 275/55R20 is a all terrain tire.
Keep shopping
Shop all 275/55R20 tires, see every Arroyo Tamarock AT size, explore all terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Arroyo
- Model:
- Tamarock AT
- Size:
- 275/55R20
- Aspect Ratio:
- 55
- Load Index:
- 117
- Load Range:
- XL
- Section Width:
- 275
- Service Description:
- 117H
- Speed Index:
- H
- Temperature:
- A
- Tire Rim Diameter:
- 20
- Tire Type:
- All Terrain
- Traction:
- A
- Tread Wear:
- 500
- Max Load (LB):
- 2833
- UQTG:
- 500 A A
- Side Wall:
- BSW
- Warranty:
- N/A
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