Venom Power Grand AM 155/80R13

The Venom Power Grand AM in 155/80R13 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 155/80R13 means

In the size 155/80R13, 155 is the section width in millimeters (6.10 in), 80 is the aspect ratio — the sidewall stands 80% as tall as the tire is wide, or 124.0 mm (4.88 in) — R denotes radial construction, and 13 is the wheel diameter in inches. That works out to an overall diameter of about 22.76 inches, turning roughly 886 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 13 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 79 — a maximum load of 963 lbs per tire. The speed symbol S corresponds to a maximum sustained speed of 112 mph.

Specifications

Frequently asked questions

What does 79S mean on the Venom Power Grand AM?

79S breaks down as load index 79 — rated for 963 lbs per tire — with an S speed rating, good for a maximum sustained 112 mph.

Will 155/80R13 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 155/80R13, 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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