Write a Review
Yokohama
Yokohama YOK AD08R 255/35R18
Yokohama YOK AD08R 255/35R18
📧 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
Shop the Yokohama AD08R 255/35R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 255/35R18 means
In the size 255/35R18, 255 is the section width in millimeters (10.04 in), 35 is the aspect ratio — the sidewall stands 35% as tall as the tire is wide, or 89.2 mm (3.51 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 25.03 inches, turning roughly 806 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 90 — a maximum load of 1,323 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 255/35R18 |
| Tire Type | Extreme Performance |
| Service Description | 90W |
| Load Index | 90 |
| Speed Rating | W |
| Load Range | SL |
| Section Width (mm) | 255 |
| Aspect Ratio | 35 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 10 |
| Treadwear | 200 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 200AAA |
Frequently asked questions
What are the treadwear and warranty ratings on the Yokohama AD08R?
This tire carries a treadwear grade of 200, traction grade AA, temperature grade A under UTQG.
What does 90W mean on the Yokohama AD08R?
90W breaks down as load index 90 — rated for 1,323 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the Yokohama AD08R?
The Yokohama AD08R in 255/35R18 is a extreme performance tire.
Keep shopping
Shop all 255/35R18 tires, see every Yokohama AD08R size, or view all tires at ThreePiece.us.
- BRAND:
- Yokohama
- Model:
- YOK AD08R
- Size:
- 255/35R18
- Aspect Ratio:
- 35
- Load Index:
- 90
- Load Range:
- SL
- Section Width:
- 255
- Service Description:
- 90W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- Extreme Performance
- Traction:
- AA
- Tread Wear:
- 200
- Tread Depth:
- 10
- UQTG:
- 200AAA
- Warranty:
- N/A
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