Firestone Duraforce DT 330/55D16.5/10 - 360481

Shop the Firestone Duraforce DT 330/55R16.5 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.

What 330/55R16.5 means

In the size 330/55R16.5, 330 is the section width in millimeters (12.99 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 181.5 mm (7.15 in) — R denotes radial construction, and 16.5 is the wheel diameter in inches. That works out to an overall diameter of about 30.79 inches, turning roughly 655 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 31 inches — when clearance is tight, go by the published figure rather than the nominal size math.

Specifications

Frequently asked questions

Will 330/55R16.5 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 330/55R16.5, 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.

Keep shopping

Browse Firestone tires, see every Firestone Duraforce DT size, or view all tires at ThreePiece.us.