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Toyo
Toyo TOY Open Country C/T LT245/75R17/10
Toyo TOY Open Country C/T LT245/75R17/10
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Looking for a 245/75R17 all terrain tire? The Toyo Open Country C/T is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 245/75R17 means
In the size 245/75R17, 245 is the section width in millimeters (9.65 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 183.8 mm (7.23 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 31.47 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 17 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 121 — a maximum load of 3,197 lbs per tire, or 118 (2,910 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 | LT245/75R17/10 |
| Tire Type | All Terrain |
| Service Description | 121/118Q |
| Load Index | 121/118 |
| Speed Rating | Q |
| Load Range | E (10 Ply) |
| Section Width (mm) | 245 |
| Aspect Ratio | 75 |
| Overall Diameter (in) | 17 |
| Tread Depth (/32") | 18.3 |
Frequently asked questions
What kind of tire is the Toyo Open Country C/T?
The Toyo Open Country C/T in 245/75R17 is a all terrain tire.
Will 245/75R17 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 245/75R17, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 245/75R17 tire in stock to compare options.
What does 121/118Q mean on the Toyo Open Country C/T?
121/118Q breaks down as load index 121 — rated for 3,197 lbs per tire (118, or 2,910 lbs, in dual fitment) — with a Q speed rating, good for a maximum sustained 99 mph.
Keep shopping
Shop all 245/75R17 tires, see every Toyo Open Country C/T size, explore all terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Toyo
- Model:
- TOY Open Country C/T
- Size:
- LT245/75R17/10
- Aspect Ratio:
- 75
- Load Index:
- 121/118
- Load Range:
- E (10 Ply)
- Section Width:
- 245
- Service Description:
- 121/118Q
- Speed Index:
- Q
- Temperature:
- N/A
- Tire Rim Diameter:
- 17
- Tire Type:
- All Terrain
- Traction:
- N/A
- Tread Wear:
- N/A
- Tread Depth:
- 18.3
- UQTG:
- N/A
- Warranty:
- N/A
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