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Continental
Continental ExtremeContact DWS06 255/55ZR18XL 109W - 15499900000
Continental ExtremeContact DWS06 255/55ZR18XL 109W - 15499900000
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Looking for a 255/55R18 all season tire? The Continental ExtremeContact DWS06 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 255/55R18 means
In the size 255/55R18, 255 is the section width in millimeters (10.04 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 140.2 mm (5.52 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 29.04 inches, turning roughly 694 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 109 — a maximum load of 2,271 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 255/55ZR18XL |
| Tire Type | All Season |
| Service Description | 109W |
| Load Index | 109 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 255 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 29 |
| Tread Depth (/32") | 10 |
| Treadwear | 560 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 560AA |
| Warranty | 50K |
Frequently asked questions
What kind of tire is the Continental ExtremeContact DWS06?
The Continental ExtremeContact DWS06 in 255/55R18 is a all season tire.
What are the treadwear and warranty ratings on the Continental ExtremeContact DWS06?
This tire carries a treadwear grade of 560, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 50K.
What does 109W mean on the Continental ExtremeContact DWS06?
109W breaks down as load index 109 — rated for 2,271 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Keep shopping
Shop all 255/55R18 tires, browse Continental tires, see every Continental ExtremeContact DWS06 size, or view all tires at ThreePiece.us.
- BRAND:
- Continental
- Model:
- ExtremeContact DWS06
- Size:
- 255/55ZR18XL
- Aspect Ratio:
- 55
- Load Index:
- 109
- Load Range:
- XL
- Section Width:
- 255
- Service Description:
- 109W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 29
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 560
- Tread Depth:
- 10
- UQTG:
- 560AA
- Warranty:
- 50K
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