Yokohama YOK Advan Apex 245/30R20

The Yokohama Advan Apex in 245/30R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 245/30R20 means

In the size 245/30R20, 245 is the section width in millimeters (9.65 in), 30 is the aspect ratio — the sidewall stands 30% as tall as the tire is wide, or 73.5 mm (2.89 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 25.79 inches, turning roughly 782 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 20 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 Y corresponds to a maximum sustained speed of 186 mph.

Specifications

Frequently asked questions

What does 90Y mean on the Yokohama Advan Apex?

90Y breaks down as load index 90 — rated for 1,323 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.

What kind of tire is the Yokohama Advan Apex?

The Yokohama Advan Apex in 245/30R20 is a high performance tire.

Will 245/30R20 tires fit my vehicle?

Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 245/30R20, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

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