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Cooper
Cooper Discoverer Road Trail AT 245/75R17 112T - 171278049
Cooper Discoverer Road Trail AT 245/75R17 112T - 171278049
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Shop the Cooper Discoverer Road Trail AT 245/75R17 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
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 service description on this tire decodes to a load index of 112 — a maximum load of 2,469 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 245/75R17 |
| Tire Type | All Season |
| Service Description | 112T |
| Load Index | 112 |
| Speed Rating | T |
| Section Width (mm) | 245 |
| Aspect Ratio | 75 |
| Overall Diameter (in) | 31.5 |
| Tread Depth (/32") | 13 |
| Treadwear | 620 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 620AB |
| Warranty | 65K |
Frequently asked questions
What are the treadwear and warranty ratings on the Cooper Discoverer Road Trail AT?
This tire carries a treadwear grade of 620, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 65K.
What does 112T mean on the Cooper Discoverer Road Trail AT?
112T breaks down as load index 112 — rated for 2,469 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
What kind of tire is the Cooper Discoverer Road Trail AT?
The Cooper Discoverer Road Trail AT in 245/75R17 is a all season tire.
Keep shopping
Shop all 245/75R17 tires, browse Cooper tires, see every Cooper Discoverer Road Trail AT size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper
- Model:
- Discoverer Road Trail AT
- Size:
- 245/75R17
- Aspect Ratio:
- 75
- Load Index:
- 112
- Section Width:
- 245
- Service Description:
- 112T
- Speed Index:
- T
- Temperature:
- B
- Tire Rim Diameter:
- 31.5
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 620
- Tread Depth:
- 13
- UQTG:
- 620AB
- Warranty:
- 65K
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