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Cooper Tires
Cooper Tires COO CS5 Grand Touring 225/55R18
Cooper Tires COO CS5 Grand Touring 225/55R18
__12846.1681970028.jpg?c=2 "Cooper Tires COO CS5 Grand Touring 225/55R18")
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Looking for a 225/55R18 touring tire? The Cooper Tires CS5 Grand Touring is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 225/55R18 means
In the size 225/55R18, 225 is the section width in millimeters (8.86 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 123.8 mm (4.87 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 27.74 inches, turning roughly 727 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 98 — a maximum load of 1,653 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 225/55R18 |
| Tire Type | Touring |
| Service Description | 98T |
| Load Index | 98 |
| Speed Rating | T |
| Load Range | SL |
| Section Width (mm) | 225 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 27.76 |
| Tread Depth (/32") | 11 |
| Treadwear | 780 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 780AA |
| Warranty | 80K |
Frequently asked questions
What kind of tire is the Cooper Tires CS5 Grand Touring?
The Cooper Tires CS5 Grand Touring in 225/55R18 is a touring tire.
What are the treadwear and warranty ratings on the Cooper Tires CS5 Grand Touring?
This tire carries a treadwear grade of 780, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 80K.
What does 98T mean on the Cooper Tires CS5 Grand Touring?
98T breaks down as load index 98 — rated for 1,653 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
Keep shopping
Shop all 225/55R18 tires, see every Cooper Tires CS5 Grand Touring size, or view all tires at ThreePiece.us.
- Brand:
- Cooper Tires
- Model:
- COO CS5 Grand Touring
- Size:
- 225/55R18
- Aspect Ratio:
- 55
- Load Index:
- 98
- Load Range:
- SL
- Section Width:
- 225
- Service Description:
- 98T
- Speed Index:
- T
- Temperature:
- A
- Tire Rim Diameter:
- 27.76
- Tire Type:
- Touring
- Traction:
- A
- Tread Wear:
- 780
- Tread Depth:
- 11
- UQTG:
- 780AA
- Warranty:
- 80K
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