Mickey Thompson MIK Baja Boss A/T LT275/55R20

The Mickey Thompson Baja Boss A/T in 275/55R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 275/55R20 means

In the size 275/55R20, 275 is the section width in millimeters (10.83 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 151.2 mm (5.95 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 31.91 inches, turning roughly 632 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 20 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 120 — a maximum load of 3,086 lbs per tire, or 117 (2,833 lbs) per tire when mounted as duals. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What does 120/117Q mean on the Mickey Thompson Baja Boss A/T?

120/117Q breaks down as load index 120 — rated for 3,086 lbs per tire (117, or 2,833 lbs, in dual fitment) — with a Q speed rating, good for a maximum sustained 99 mph.

What kind of tire is the Mickey Thompson Baja Boss A/T?

The Mickey Thompson Baja Boss A/T in 275/55R20 is a all terrain tire.

What warranty does the Mickey Thompson Baja Boss A/T carry?

The manufacturer's warranty on this tire is 50K.

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