Accelera Iota ST68 255/50R19

The Accelera Iota ST68 in 255/50R19 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 255/50R19 means

In the size 255/50R19, 255 is the section width in millimeters (10.04 in), 50 is the aspect ratio — the sidewall stands 50% as tall as the tire is wide, or 127.5 mm (5.02 in) — R denotes radial construction, and 19 is the wheel diameter in inches. That works out to an overall diameter of about 29.04 inches, turning roughly 695 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 107 — a maximum load of 2,150 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.

Specifications

Frequently asked questions

What does 107W mean on the Accelera Iota ST68?

107W breaks down as load index 107 — rated for 2,150 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.

Will 255/50R19 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 255/50R19, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 255/50R19 tire in stock to compare options.

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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