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Yokohama
Yokohama YOK Advan A13C 245/40R18
Yokohama YOK Advan A13C 245/40R18
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The Yokohama Advan A13C 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 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 93 — a maximum load of 1,433 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 245/40R18 |
| Tire Type | High-Performance |
| Service Description | 93Y |
| Load Index | 93 |
| Speed Rating | Y |
| Load Range | SL |
| Section Width (mm) | 245 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 10 |
| Treadwear | 180 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 180AA |
Frequently asked questions
What does 93Y mean on the Yokohama Advan A13C?
93Y breaks down as load index 93 — rated for 1,433 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
What kind of tire is the Yokohama Advan A13C?
The Yokohama Advan A13C in 245/40R18 is a high-performance tire.
What are the treadwear and warranty ratings on the Yokohama Advan A13C?
This tire carries a treadwear grade of 180, traction grade A, temperature grade A under UTQG.
Keep shopping
Shop all 245/40R18 tires, see every Yokohama Advan A13C size, or view all tires at ThreePiece.us.
- BRAND:
- Yokohama
- Model:
- YOK Advan A13C
- Size:
- 245/40R18
- Aspect Ratio:
- 40
- Load Index:
- 93
- Load Range:
- SL
- Section Width:
- 245
- Service Description:
- 93Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- High-Performance
- Traction:
- A
- Tread Wear:
- 180
- Tread Depth:
- 10
- UQTG:
- 180AA
- Warranty:
- N/A
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