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Toyo
Toyo TOY Open Country R/T LT285/60R18/10
Toyo TOY Open Country R/T LT285/60R18/10
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Looking for a 285/60R18 all terrain tire? The Toyo Open Country R/T is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 285/60R18 means
In the size 285/60R18, 285 is the section width in millimeters (11.22 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 171.0 mm (6.73 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 31.46 inches, turning roughly 641 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 122 — a maximum load of 3,307 lbs per tire, or 119 (2,998 lbs) per tire when mounted as duals. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | LT285/60R18/10 |
| Tire Type | All Terrain |
| Service Description | 122/119Q |
| Load Index | 122/119 |
| Speed Rating | Q |
| Load Range | E (10 Ply) |
| Section Width (mm) | 285 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 16.4 |
| Warranty | 45K |
Frequently asked questions
What kind of tire is the Toyo Open Country R/T?
The Toyo Open Country R/T in 285/60R18 is a all terrain tire.
What warranty does the Toyo Open Country R/T carry?
The manufacturer's warranty on this tire is 45K.
What does 122/119Q mean on the Toyo Open Country R/T?
122/119Q breaks down as load index 122 — rated for 3,307 lbs per tire (119, or 2,998 lbs, in dual fitment) — with a Q speed rating, good for a maximum sustained 99 mph.
Keep shopping
See every Toyo Open Country R/T size, explore all terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Toyo
- Model:
- TOY Open Country R/T
- Size:
- LT285/60R18/10
- Aspect Ratio:
- 60
- Load Index:
- 122/119
- Load Range:
- E (10 Ply)
- Section Width:
- 285
- Service Description:
- 122/119Q
- Speed Index:
- Q
- Temperature:
- N/A
- Tire Rim Diameter:
- 18
- Tire Type:
- All Terrain
- Traction:
- N/A
- Tread Wear:
- N/A
- Tread Depth:
- 16.4
- UQTG:
- N/A
- Warranty:
- 45K
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