Write a Review
Yokohama
Yokohama YOK Geolandar X-CV 255/55R18XL
Yokohama YOK Geolandar X-CV 255/55R18XL
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
OUT OF STOCK 
📧 Get Fitment Help
Verify parts fit & get product recommendations
The Yokohama Geolandar X-CV in 255/55R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
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 manufacturer lists the overall diameter of this specific tire as 18 inches — when clearance is tight, go by the published figure rather than the nominal size math.
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 | 255/55R18xL |
| Tire Type | High Performance |
| Service Description | 109W |
| Load Index | 109 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 255 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 11 |
| Treadwear | 520 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 520AA |
| Warranty | 50K |
Frequently asked questions
What does 109W mean on the Yokohama Geolandar X-CV?
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.
What kind of tire is the Yokohama Geolandar X-CV?
The Yokohama Geolandar X-CV in 255/55R18 is a high performance tire.
What are the treadwear and warranty ratings on the Yokohama Geolandar X-CV?
This tire carries a treadwear grade of 520, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 50K.
Keep shopping
Shop all 255/55R18 tires, see every Yokohama Geolandar X-CV size, or view all tires at ThreePiece.us.
- BRAND:
- Yokohama
- Model:
- YOK Geolandar X-CV
- Size:
- 255/55R18xL
- Aspect Ratio:
- 55
- Load Index:
- 109
- Load Range:
- XL
- Section Width:
- 255
- Service Description:
- 109W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- High Performance
- Traction:
- A
- Tread Wear:
- 520
- Tread Depth:
- 11
- UQTG:
- 520AA
- Warranty:
- 50K
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review