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Cooper Tires
Cooper Tires COO Endeavor Plus 255/65R18
Cooper Tires COO Endeavor Plus 255/65R18
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Shop the Cooper Tires Endeavor Plus 255/65R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 255/65R18 means
In the size 255/65R18, 255 is the section width in millimeters (10.04 in), 65 is the aspect ratio — the sidewall stands 65% as tall as the tire is wide, or 165.8 mm (6.53 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 31.05 inches, turning roughly 650 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 111 — a maximum load of 2,403 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 255/65R18 |
| Tire Type | Touring |
| Service Description | 111H |
| Load Index | 111 |
| Speed Rating | H |
| Load Range | SL |
| Section Width (mm) | 255 |
| Aspect Ratio | 65 |
| Overall Diameter (in) | 31.1 |
| Tread Depth (/32") | 11.5 |
| Treadwear | 680 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 680AA |
| Warranty | 65K |
Frequently asked questions
What are the treadwear and warranty ratings on the Cooper Tires Endeavor Plus?
This tire carries a treadwear grade of 680, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 65K.
What does 111H mean on the Cooper Tires Endeavor Plus?
111H breaks down as load index 111 — rated for 2,403 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Cooper Tires Endeavor Plus?
The Cooper Tires Endeavor Plus in 255/65R18 is a touring tire.
Keep shopping
Shop all 255/65R18 tires, see every Cooper Tires Endeavor Plus size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper Tires
- Model:
- COO Endeavor Plus
- Size:
- 255/65R18
- Aspect Ratio:
- 65
- Load Index:
- 111
- Load Range:
- SL
- Section Width:
- 255
- Service Description:
- 111H
- Speed Index:
- H
- Temperature:
- A
- Tire Rim Diameter:
- 31.1
- Tire Type:
- Touring
- Traction:
- A
- Tread Wear:
- 680
- Tread Depth:
- 11.5
- UQTG:
- 680AA
- Warranty:
- 65K
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