Firestone Performer 85 TL R1W 420/85R28 139D - 000600

The Firestone Performer 85 TL R1W in 420/85R28 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 420/85R28 means

In the size 420/85R28, 420 is the section width in millimeters (16.54 in), 85 is the aspect ratio — the sidewall stands 85% as tall as the tire is wide, or 357.0 mm (14.06 in) — R denotes radial construction, and 28 is the wheel diameter in inches. That works out to an overall diameter of about 56.11 inches, turning roughly 359 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 139 — a maximum load of 5,357 lbs per tire.

Specifications

Frequently asked questions

What does 139D mean on the Firestone Performer 85 TL R1W?

139D breaks down as load index 139 — rated for 5,357 lbs per tire.

Will 420/85R28 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 420/85R28, 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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