Samson GM-A1 315/80R22.5 158/156G - V86730-2

The Samson GM-A1 in 315/80R22.5 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 315/80R22.5 means

In the size 315/80R22.5, 315 is the section width in millimeters (12.40 in), 80 is the aspect ratio — the sidewall stands 80% as tall as the tire is wide, or 252.0 mm (9.92 in) — R denotes radial construction, and 22.5 is the wheel diameter in inches. That works out to an overall diameter of about 42.34 inches, turning roughly 476 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 service description on this tire decodes to a load index of 158 — a maximum load of 9,370 lbs per tire, or 156 (8,818 lbs) per tire when mounted as duals. The speed symbol G corresponds to a maximum sustained speed of 56 mph.

Specifications

Frequently asked questions

What does 158/156G mean on the Samson GM-A1?

158/156G breaks down as load index 158 — rated for 9,370 lbs per tire (156, or 8,818 lbs, in dual fitment) — with a G speed rating, good for a maximum sustained 56 mph.

Will 315/80R22.5 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 315/80R22.5, 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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