2005 Ford F250 — Super Crew Harley Davidson

The 2005 Ford F250 Super Crew Harley Davidson came from the factory equipped with 275/65R20 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.

275/65R20

Section width275 mm
Aspect ratio (sidewall height)65% (178.8 mm)
Rim diameter20"
Overall tire diameter~34.1"
Revolutions per mile~592

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What this size means for your Ford F250

On the 2005 Ford F250 Super Crew Harley Davidson, the factory 275/65R20 measures about 34.1″ in overall diameter with a 178.8 mm (7″) sidewall, and completes roughly 592 revolutions per mile. Its 65-series aspect ratio gives a taller, comfort-biased sidewall that favors ride quality and shrugs off rough pavement. In tire terms it is a large-diameter fitment.

On a vehicle of this age, the Ford F250 may have been refitted with a slightly different replacement size somewhere in its life, so check the current sidewall — not just the factory spec — before buying.

Other 2005 Ford F250 trims

Ford F250 tire sizes by year

See every Ford F250 year & trim →

How to read a tire size

A tire size like 225/45R17 breaks down into three parts: the first number is the section width in millimeters (the tire's width from sidewall to sidewall), the second is the aspect ratio — the sidewall's height as a percentage of that width — and the number after the "R" is the rim diameter in inches. A letter prefix (P or LT) indicates Passenger or Light Truck construction; its absence usually means Euro-metric sizing.

Some trucks and off-road tires instead use "flotation" sizing, like 37X12.50R17 — here the numbers are the tire's overall diameter and width in inches directly, with the rim diameter last.

Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.