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Arroyo
Arroyo Tamarock AT 275/65R18 114T
Arroyo Tamarock AT 275/65R18 114T
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The Arroyo Tamarock AT in 275/65R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 275/65R18 means
In the size 275/65R18, 275 is the section width in millimeters (10.83 in), 65 is the aspect ratio — the sidewall stands 65% as tall as the tire is wide, or 178.8 mm (7.04 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.07 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 manufacturer lists the overall diameter of this specific tire as 18 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 114 — a maximum load of 2,601 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 275/65R18 |
| Tire Type | All Terrain |
| Service Description | 114T |
| Load Index | 114 |
| Speed Rating | T |
| Load Range | SL |
| Section Width (mm) | 275 |
| Aspect Ratio | 65 |
| Overall Diameter (in) | 18 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500 A A |
Frequently asked questions
What does 114T mean on the Arroyo Tamarock AT?
114T breaks down as load index 114 — rated for 2,601 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
What kind of tire is the Arroyo Tamarock AT?
The Arroyo Tamarock AT in 275/65R18 is a all terrain tire.
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.
Keep shopping
Shop all 275/65R18 tires, see every Arroyo Tamarock AT size, explore all terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Arroyo
- Model:
- Tamarock AT
- Size:
- 275/65R18
- Aspect Ratio:
- 65
- Load Index:
- 114
- Load Range:
- SL
- Section Width:
- 275
- Service Description:
- 114T
- Speed Index:
- T
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- All Terrain
- Traction:
- A
- Tread Wear:
- 500
- Max Load (LB):
- 2601
- UQTG:
- 500 A A
- Side Wall:
- BSW
- Warranty:
- N/A
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