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Cooper
Cooper Evolution H/T 255/65R18 111T - 171099006
Cooper Evolution H/T 255/65R18 111T - 171099006
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The Cooper Evolution H/T in 255/65R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
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 T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 255/65R18 |
| Tire Type | All Season |
| Service Description | 111T |
| Load Index | 111 |
| Speed Rating | T |
| Load Range | Standard Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 65 |
| Overall Diameter (in) | 31.1 |
| Tread Depth (/32") | 12.5 |
| Treadwear | 600 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 600AB |
| Warranty | 60K |
Frequently asked questions
What does 111T mean on the Cooper Evolution H/T?
111T breaks down as load index 111 — rated for 2,403 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
What kind of tire is the Cooper Evolution H/T?
The Cooper Evolution H/T in 255/65R18 is a all season tire.
What are the treadwear and warranty ratings on the Cooper Evolution H/T?
This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 60K.
Keep shopping
Shop all 255/65R18 tires, browse Cooper tires, see every Cooper Evolution H/T size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper
- Model:
- Evolution H/T
- Size:
- 255/65R18
- Aspect Ratio:
- 65
- Load Index:
- 111
- Load Range:
- Standard Load
- Section Width:
- 255
- Service Description:
- 111T
- Speed Index:
- T
- Temperature:
- B
- Tire Rim Diameter:
- 31.1
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 600
- Tread Depth:
- 12.5
- UQTG:
- 600AB
- Warranty:
- 60K
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