Firestone FS509 295/75R22.5 151/146L - 012392

The Firestone FS509 in 295/75R22.5 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 295/75R22.5 means

In the size 295/75R22.5, 295 is the section width in millimeters (11.61 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 221.2 mm (8.71 in) — R denotes radial construction, and 22.5 is the wheel diameter in inches. That works out to an overall diameter of about 39.92 inches, turning roughly 505 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 40.2 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 151 — a maximum load of 7,606 lbs per tire, or 146 (6,614 lbs) per tire when mounted as duals. The speed symbol L corresponds to a maximum sustained speed of 75 mph.

Specifications

Frequently asked questions

What does 151/146L mean on the Firestone FS509?

151/146L breaks down as load index 151 — rated for 7,606 lbs per tire (146, or 6,614 lbs, in dual fitment) — with an L speed rating, good for a maximum sustained 75 mph.

Will 295/75R22.5 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 295/75R22.5, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

How fast does this tire ship?

Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.

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