The 2009 Ford Trucks F-150 Lariat sits in the modern full-size pickup era when comfort, trim level, and daily usability mattered just as much as work capability. On this exact truck, tire selection starts with confirming which wheel and sub-model setup you have, because the Lariat can use 265/60R18, 275/65R18, or 275/55R20 radial tires. That means the real choice is not only size, but also whether the truck is a 4x2, 4x4, or equipped with the 20-inch wheel option. Getting that part right helps preserve stance, clearance, and the driving character expected from a well-kept F-150 Lariat.
Which Tire Size Is Right for The 2009 Ford Trucks F-150 Lariat
Three tire sizes apply to the 2009 Ford Trucks F-150 Lariat, and they are tied to sub-model and wheel configuration rather than one universal fitment. The first thing to confirm is whether the truck is a 4x2, a 4x4, or equipped with the 20-inch option, because this Lariat uses both 18-inch and 20-inch rim diameters. Once that is clear, the decision becomes choosing the right radial tire within the correct size for the truck's intended use and appearance.
A 275/55R20 tire uses a 275-millimeter nominal section width, a 55-series aspect ratio, radial construction, and a 20-inch rim diameter. On the 2009 Ford Trucks F-150 Lariat, this size belongs to the 20-inch wheel setup and also appears on certain 4x2 configurations. Its lower-profile metric radial format gives the buyer a more modern sizing reference than older numeric or alphanumeric systems. This is the size to evaluate when the truck already wears 20-inch wheels and the goal is to stay with the proper rim diameter and overall setup.
A 265/60R18 tire indicates a 265-millimeter nominal section width, a 60-series profile, radial construction, and fitment on an 18-inch rim. On the 2009 Ford Trucks F-150 Lariat, this size is used on certain 4x2 trucks, so it should not be assumed across every Lariat configuration. The metric sizing format is familiar to modern truck owners and makes it easier to compare replacement tires within the same basic dimensions. This size deserves attention when confirming an 18-inch 4x2 wheel package before comparing tread style, load capacity, and tire character.
A 275/65R18 tire combines a 275-millimeter nominal section width with a 65-series aspect ratio, radial construction, and an 18-inch rim diameter. On the 2009 Ford Trucks F-150 Lariat, this size is associated with the 4x4 configuration, making exact sub-model identification especially important before replacement. Available choices in this size can also bring more specialized character, including an all-terrain approach and raised white letter sidewall presentation. This is the size to focus on when the truck is a Lariat 4x4 and the owner wants to match the existing wheel diameter and intended truck use.
Tire fitment for the 2009 Ford Trucks F-150 Lariat varies by sub-model and wheel package, so the exact configuration matters before a replacement tire is chosen. Some versions use 18-inch wheels, while others use 20-inch wheels, and that difference changes the correct tire size immediately.
1
2009 Ford Trucks F-150 Lariat (20 Inch Option)
The 20 Inch Option uses the 275/55R20 radial size, which makes wheel diameter confirmation the key first step. Once the truck's 20-inch setup is verified, the focus shifts to choosing a tire that suits the truck's intended road use and preserves the correct overall fitment direction.
The 4x2 configuration can use either 265/60R18 or 275/55R20, so this is not a one-size-fits-all situation. Wheel diameter should be checked before anything else, since an 18-inch tire and a 20-inch tire are not interchangeable simply because they belong to the same Lariat trim.
The 4x4 uses the 275/65R18 radial size, giving this configuration a distinct fitment within the Lariat range. That makes tire selection more straightforward, with attention turning to tread style, sidewall presentation, and rim-width compatibility within the correct 18-inch setup.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2009 Ford Trucks F-150 Lariat Tires for Sale
Available product choices center on 275/65R18, including a BFGoodrich All Terrain TA KO2 radial with raised white letter sidewall styling. That gives 4x4 Lariat owners a truck-oriented option to compare by series character, load specification, rim-width compatibility, and overall use case.
These FAQs focus on the exact tire sizes used on the 2009 Ford Trucks F-150 Lariat, along with rim fitment, sub-model differences, product selection, and the checks that matter before putting a truck back on the road.
Tire Size & Fitment
What tire size fits a 2009 Ford Trucks F-150 Lariat?
The 2009 Ford Trucks F-150 Lariat uses three possible tire sizes: 275/55R20, 265/60R18, and 275/65R18. These are all radial sizes, but they do not apply across every Lariat the same way. The correct one depends on whether the truck is a 4x2, a 4x4, or equipped with the 20-inch wheel option.
Picking the right replacement starts with checking the truck's actual wheel diameter and exact sub-model configuration. A Lariat 4x2 can use either an 18-inch or 20-inch setup, while the 4x4 uses an 18-inch size of its own. The tire sidewall and wheel stamping are both worth checking, especially on trucks that may have had wheel changes during their service life.
What size rim does a 2009 Ford Trucks F-150 Lariat use?
A 2009 Ford Trucks F-150 Lariat uses either an 18-inch or 20-inch rim, depending on the truck's configuration. The 265/60R18 and 275/65R18 sizes are built for 18-inch wheels, while the 275/55R20 size is built for a 20-inch wheel. Rim diameter is a basic fitment point that has to match the tire exactly.
The quickest way to avoid a mismatch is to confirm the wheel diameter before comparing tires. On this Lariat, that matters because different sub-models and option packages do not share one universal wheel size. It also helps to verify wheel width and current tire markings if the truck has been modified or if its original wheels have been replaced at some point.
Why does the 2009 Ford Trucks F-150 Lariat have more than one tire size?
More than one tire size appears on the 2009 Ford Trucks F-150 Lariat because fitment changes with sub-model and wheel package. The 4x2 configuration can use 265/60R18 or 275/55R20, the 4x4 uses 275/65R18, and the 20 Inch Option uses 275/55R20. That makes this a configuration-based fitment question rather than a single-size truck.
For the buyer, the important point is that trim name alone is not enough to choose a tire. The truck's drivetrain and wheel package need to be confirmed first, since 18-inch and 20-inch setups require different tires entirely. Checking the door-area tire placard, the current tire sidewall, and the actual wheel diameter helps narrow the choice before looking at tread or brand differences.
Choosing the Right Tire
What should I consider when choosing a tire for a 2009 Ford Trucks F-150 Lariat?
Start with the correct size for the truck's exact configuration, because the 2009 Ford Trucks F-150 Lariat does not use one universal fitment. The right choice depends on whether the truck is a 4x2, a 4x4, or fitted with the 20-inch option. After size is confirmed, compare construction, intended use, load specification, and wheel compatibility.
A truck used mainly on pavement may call for a different tire style than one that regularly sees dirt roads or mixed use. Rim diameter must match exactly, and wheel width should also be checked against the tire's requirements. On a well-used pickup, it is smart to inspect for suspension wear or alignment issues too, since those can affect how any new tire performs and wears.
What sidewall styles are available for 2009 Ford Trucks F-150 Lariat tires?
For the 275/65R18 size used on the 2009 Ford Trucks F-150 Lariat 4x4, an available sidewall style is RWL, or raised white letter. That style gives the truck a more traditional light-truck presentation than a plain black sidewall. Sidewall appearance does not change the tire's size, but it can change the overall visual character of the truck.
Choosing a sidewall treatment depends on whether the goal is a more understated look or a more classic truck-oriented appearance. The important part is to keep appearance decisions secondary to correct fitment, load suitability, and the truck's actual use. On a Lariat that has seen wheel or suspension changes, it is still worth verifying full clearance even when the size on paper is correct.
What brands offer tires for the 2009 Ford Trucks F-150 Lariat?
BFGoodrich is available in the 275/65R18 size for the 2009 Ford Trucks F-150 Lariat. That option appears as the All Terrain TA KO2, giving buyers in that size a recognizable truck tire series with a distinct all-terrain character. Brand choice matters most after the correct tire size and wheel diameter have already been confirmed.
A brand name alone should not drive the decision ahead of fitment, load rating, and intended use. For this truck, it is more useful to compare how the available tire is built and what kind of driving it suits. Owners of 4x2 or 20-inch-wheel Lariat trucks should also make sure they are shopping within the correct size, since the available product shown here centers on 275/65R18.
Restoration & Appearance
Which tire should I choose for a period-style 2009 Ford Trucks F-150 Lariat?
A period-style tire choice for a 2009 Ford Trucks F-150 Lariat starts with keeping the truck in its correct size and wheel diameter for the exact configuration. That means 265/60R18, 275/65R18, or 275/55R20 depending on the sub-model and wheel package. Staying with the proper modern metric radial format helps preserve the truck's intended stance and overall look.
Appearance details can then be chosen around how original or how truck-oriented the finished presentation should feel. A raised white letter sidewall, for example, gives the 275/65R18 size a more traditional light-truck look. When exact originality matters, checking period brochures, dealer literature, or marque-specific reference material is the safest way to sort appearance details beyond basic fitment.
Does correct tire fitment matter for a 2009 Ford Trucks F-150 Lariat restoration?
Correct tire fitment matters on a 2009 Ford Trucks F-150 Lariat because wheel diameter and tire proportion have a strong effect on how the truck sits and how finished it looks. Using the proper 18-inch or 20-inch size for the exact configuration keeps the truck closer to its intended visual balance and avoids an obviously mismatched presentation.
Restoration-minded owners should pay attention not only to size code, but also to sidewall style and overall tire character. A truck restored for clean street use may call for a different look than one kept with a more utility-oriented stance. Even on a newer collector-era pickup, the right fitment contributes to both appearance and the practical relationship between tire, wheel, and body clearance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Ford Trucks F-150 Lariat?
Yes, modifications can affect tire fitment on a 2009 Ford Trucks F-150 Lariat even when the tire size matches a known factory-style configuration. Aftermarket wheels, different wheel widths, suspension lifts or lowering changes, and body alterations can all change clearance. That matters on this truck because its correct tire size already depends on the exact wheel and sub-model setup.
A modified truck should be checked for wheel diameter, wheel width, steering clearance, and fender or suspension clearance before replacement tires are chosen. It also helps to confirm that the current tires are not masking a prior fitment compromise. Looking at lock-to-lock clearance and loaded ride height can prevent rubbing issues that a stock-dimension reference alone will not reveal.
What should I inspect before driving a 2009 Ford Trucks F-150 Lariat on new tires?
Before putting a 2009 Ford Trucks F-150 Lariat into regular road use on new tires, inspect the wheels, valve stems, lug hardware, and general tire condition after installation. Tire pressure should be set appropriately, and the tires should be checked for any sign of bead seating issues, visible damage, or irregular contact. A quick visual inspection is never a bad habit on a truck.
It is also smart to look at alignment wear patterns on the old tires, since they can reveal suspension or steering issues that may shorten the life of the new set. On a truck that has sat for long periods, inspect brake condition and steering components too. A short road test followed by a second pressure and visual check can catch problems before a longer drive.
How often should tires on a 2009 Ford Trucks F-150 Lariat be inspected?
Tires on a 2009 Ford Trucks F-150 Lariat should be inspected regularly, not only at service intervals or when a problem becomes obvious. Pressure, tread condition, sidewall cracking, cuts, bulges, and uneven wear are all worth checking. That routine matters on a pickup because tire condition affects both everyday drivability and how the truck handles load and road surface changes.
A truck that is driven often benefits from frequent visual checks, while one that sits for longer periods should be inspected before each meaningful drive. Storage, sun exposure, and long periods of inactivity can age tires even when tread looks acceptable. Keeping an eye on slow air loss and unusual wear can also help catch wheel, alignment, or suspension problems early.
