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Cooper Tires
Cooper Tires COO Zeon RS3-G1 245/40R18XL
Cooper Tires COO Zeon RS3-G1 245/40R18XL
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The Cooper Tires Zeon RS3-G1 in 245/40R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 245/40R18 means
In the size 245/40R18, 245 is the section width in millimeters (9.65 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 98.0 mm (3.86 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 25.72 inches, turning roughly 784 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 97 — a maximum load of 1,609 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 245/40R18XL |
| Tire Type | High Performance |
| Service Description | 97W |
| Load Index | 97 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 245 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 25.75 |
| Tread Depth (/32") | 10.5 |
| Treadwear | 500 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 500AAA |
| Warranty | 45K |
Frequently asked questions
What does 97W mean on the Cooper Tires Zeon RS3-G1?
97W breaks down as load index 97 — rated for 1,609 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the Cooper Tires Zeon RS3-G1?
The Cooper Tires Zeon RS3-G1 in 245/40R18 is a high performance tire.
What are the treadwear and warranty ratings on the Cooper Tires Zeon RS3-G1?
This tire carries a treadwear grade of 500, traction grade AA, temperature grade A under UTQG. The manufacturer's warranty is 45K.
Keep shopping
Shop all 245/40R18 tires, see every Cooper Tires Zeon RS3-G1 size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper Tires
- Model:
- COO Zeon RS3-G1
- Size:
- 245/40R18XL
- Aspect Ratio:
- 40
- Load Index:
- 97
- Load Range:
- XL
- Section Width:
- 245
- Service Description:
- 97W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 25.75
- Tire Type:
- High Performance
- Traction:
- AA
- Tread Wear:
- 500
- Tread Depth:
- 10.5
- UQTG:
- 500AAA
- Warranty:
- 45K
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