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Cooper
Cooper Discoverer Rugged Trek 275/60R20 115T - 171107005
Cooper Discoverer Rugged Trek 275/60R20 115T - 171107005
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Shop the Cooper Discoverer Rugged Trek 275/60R20 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 275/60R20 means
In the size 275/60R20, 275 is the section width in millimeters (10.83 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 165.0 mm (6.50 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 32.99 inches, turning roughly 611 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 33.39 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 115 — a maximum load of 2,679 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 275/60R20 |
| Tire Type | All Season |
| Service Description | 115T |
| Load Index | 115 |
| Speed Rating | T |
| Load Range | Standard Load |
| Section Width (mm) | 275 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 33.39 |
| Tread Depth (/32") | 16 |
| Treadwear | 600 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 600AB |
| Warranty | 60K |
Frequently asked questions
What are the treadwear and warranty ratings on the Cooper Discoverer Rugged Trek?
This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 60K.
What does 115T mean on the Cooper Discoverer Rugged Trek?
115T breaks down as load index 115 — rated for 2,679 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
What kind of tire is the Cooper Discoverer Rugged Trek?
The Cooper Discoverer Rugged Trek in 275/60R20 is a all season tire.
Keep shopping
Shop all 275/60R20 tires, browse Cooper tires, see every Cooper Discoverer Rugged Trek size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper
- Model:
- Discoverer Rugged Trek
- Size:
- 275/60R20
- Aspect Ratio:
- 60
- Load Index:
- 115
- Load Range:
- Standard Load
- Section Width:
- 275
- Service Description:
- 115T
- Speed Index:
- T
- Temperature:
- B
- Tire Rim Diameter:
- 33.39
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 600
- Tread Depth:
- 16
- UQTG:
- 600AB
- Warranty:
- 60K
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