Ford Trucks F-350 Super Duty Lariat Tires

Ford Trucks F-350 Super Duty Lariat uses four tire sizes across the 2005-2017 span: 245/75R17, 275/65R18, 275/70R18, and 275/65R20. The 17-inch fitment is 245/75R17, the 18-inch fitments are 275/65R18 and 275/70R18, and the 20-inch fitment is 275/65R20. Three of those sizes run from 2005 through 2017, while 275/65R20 appears from 2006 through 2017.

The practical step is to match the tire size to the wheel diameter already on the truck before comparing anything else. A Ford Trucks F-350 Super Duty Lariat with 17-inch wheels cannot use the 18- or 20-inch sizes, and an 18-inch truck still needs the correct profile split between 275/65R18 and 275/70R18. Check the sidewall on the current tire, the wheel itself, and the vehicle placard so the replacement matches the truck’s actual configuration.

Ford Trucks F-350 Super Duty Lariat uses three rim diameters in this range: 17, 18, and 20 inches. The 245/75R17 size uses a 17-inch wheel, both 275/65R18 and 275/70R18 use 18-inch wheels, and 275/65R20 uses a 20-inch wheel. The 20-inch fitment enters the range in 2006, while 17- and 18-inch options continue throughout the production span.

That makes wheel diameter the most important first check on any Ford Trucks F-350 Super Duty Lariat tire search. If the truck has had wheels swapped at any point, the model year alone is not enough to identify the correct size. Read the wheel diameter directly from the current tire size, measure the wheel if needed, and confirm the truck’s intended setup before moving on to tread pattern or appearance.

A 2006 Ford Trucks F-350 Super Duty Lariat shows four tire sizes because that model year spans multiple wheel-diameter configurations. The listed sizes are 245/75R17 for 17-inch wheels, 275/65R18 and 275/70R18 for 18-inch wheels, and 275/65R20 for 20-inch wheels. That is a wheel-package split rather than one universal size for every truck carrying the Lariat name.

The right way to narrow it down is to identify the exact wheel diameter on the truck and then match the proper tire size within that wheel group. If the truck is on 18-inch wheels, there is still a choice between two different aspect ratios, so compare against the current tire sidewall or factory vehicle placard. Treat the year as the starting point, then let the wheel diameter and existing specification finish the job.

A 2011 Ford Trucks F-350 Super Duty Lariat can use 245/75R17, 275/65R18, 275/70R18, or 275/65R20, depending on the wheel package on the truck. Those sizes correspond to 17-, 18-, and 20-inch wheels, with two different profile choices under the 18-inch diameter. Year alone does not isolate a single fitment because several sizes overlap in the same model year.

Start with the tire size already on the truck if it is known to be correct, then verify that against the wheel diameter and vehicle placard. If the truck has changed hands, had aftermarket wheels installed, or has undergone suspension and wheel upgrades, inspect it physically rather than assuming the original setup remained in place. Matching the wheel diameter first will eliminate most mistakes before load range, sidewall style, or tread choice enters the conversation.

Ford Trucks F-350 Super Duty Lariat tires in this group are available with two sidewall styles: RWL and RBL. The 245/75R17, 275/65R18, and 275/70R18 products use RWL sidewalls, while the 275/65R20 product uses an RBL sidewall. That means sidewall appearance can vary with tire size as well as wheel diameter.

If maintaining a consistent visual look matters, check the sidewall style before choosing between overlapping sizes. An owner looking for the outlined-letter appearance will find it on the 17- and 18-inch offerings listed here, while the 20-inch option presents a more subdued black sidewall. Appearance should always come after confirming the correct wheel diameter and tire size, since sidewall style does not override fitment requirements.

The available Ford Trucks F-350 Super Duty Lariat tires in this group come from BFGoodrich. All four listed sizes use the BFGoodrich All-Terrain T/A KO2 series, covering the 17-inch, both 18-inch, and the 20-inch fitments. That gives the range one consistent brand family across the different wheel diameters.

Using one brand across multiple sizes can make replacement easier when you want a similar tread character from one wheel package to another. Even so, the right tire is still the one that matches the truck’s exact size, wheel diameter, and intended use. Compare the sidewall size on the truck first, then use the brand and series as the second step rather than the first.

A stored Ford Trucks F-350 Super Duty Lariat should be kept on a clean, dry surface away from direct sunlight, ozone sources, and large temperature swings. Heavy-duty truck tires carry substantial load capacity, so long periods of sitting in one position can encourage flat spotting and stress the carcass more than owners expect. Clean tires and proper inflation before storage help preserve shape and sidewall condition.

If the truck will sit for extended periods, move it occasionally or support it in a way that reduces constant static loading, while following sound workshop safety practices. Check inflation before and after storage because underinflation during a long layup can shorten tire life. On a Ford Trucks F-350 Super Duty Lariat that sees seasonal use, careful storage habits are one of the simplest ways to protect both ride quality and tire longevity.

Tires on a Ford Trucks F-350 Super Duty Lariat should be inspected regularly, with a close look before road trips, towing, or heavy hauling. A heavy-duty pickup places meaningful stress on its tires, so owners should watch for uneven wear, cracking, punctures, impact damage, and inflation loss. The higher load capacities in these sizes make condition and pressure especially important to safe operation.

A good routine is to inspect the tires every month, then add a more thorough check whenever the truck’s workload changes. If the truck tows, carries a slide-in camper, or spends time on rough surfaces, shorten the inspection interval and monitor wear more closely across all four corners. Catching a pressure or wear issue early on a Ford Trucks F-350 Super Duty Lariat is much easier than correcting damage after the tire has been overstressed.

Tires on a Ford Trucks F-350 Super Duty Lariat should be replaced when age, cracking, impact damage, abnormal wear, repairs, or structural concerns make them questionable, even if tread depth still looks acceptable. Collector mileage is not the only measure of tire health, and low annual use can still leave a tire aged out. Heavy-duty service raises the stakes because load and heat put more demand on an older casing.

If the truck is used for towing or carrying heavy loads, err on the conservative side and have aging tires evaluated before depending on them. Visible sidewall weathering, vibration, repeated air loss, or irregular wear patterns are all signs that replacement deserves attention sooner rather than later. A Ford Trucks F-350 Super Duty Lariat may not wear out its tires quickly by mileage alone, but time and service stress still determine when they are no longer suitable.

The listed Ford Trucks F-350 Super Duty Lariat tires are modern radial truck tires with load capacities ranging from 3,195 lbs at 80 psi up to 3,750 lbs at 80 psi, depending on size. That makes them road-use tires appropriate to a heavy-duty pickup when the correct size is matched to the correct wheel diameter and the truck’s operating condition is sound. Safe use depends on fitment, inflation, load, and the overall mechanical condition of the truck.

Public-road safety starts with choosing the exact size the truck requires and keeping inflation aligned with the truck’s actual service. A tire that is correct for one Ford Trucks F-350 Super Duty Lariat configuration may be wrong for another if the wheel diameter differs. Before regular road use, inspect the truck’s tires, steering, suspension, and brakes together, because heavy-duty pickups place real demands on every part of the running gear.

Before driving a Ford Trucks F-350 Super Duty Lariat, check tire pressure, visible tread and sidewall condition, wheel security, and any signs of uneven wear or damage. Because this model group uses multiple wheel diameters and tire sizes, it is also wise to confirm that all four tires match the intended setup on the truck. Any heavy-duty truck should be inspected more carefully before towing, hauling, or long-distance use.

A quick walkaround can prevent the most common problems, but a loaded truck deserves more than a glance. Look for cuts, bulges, missing valve caps, embedded debris, and evidence that one tire is carrying less pressure than the others. On a Ford Trucks F-350 Super Duty Lariat, those checks matter even more if the truck has seen off-pavement use or has sat for stretches between drives.

A Ford Trucks F-350 Super Duty Lariat should be driven at speeds appropriate to the tire’s condition, inflation, load, and service rating rather than by appearance alone. These are modern radial truck tires, but a heavy-duty pickup carrying cargo or towing can push any tire harder than an unloaded vehicle. Real-world safe speed is always lower when pressure is wrong, load is high, or road conditions are poor.

The sensible approach is to treat speed and load as a pair, especially on a truck built for work. If the Ford Trucks F-350 Super Duty Lariat is carrying weight, towing, or running all-terrain tires on rough surfaces, keep speeds conservative and stay within the tire and vehicle limits. Any vibration, wandering, heat buildup, or unusual response from the truck is reason to stop and inspect before continuing.