2008 Ford Trucks F-350 Super Duty FX4 Tires

The 2008 Ford Trucks F-350 Super Duty FX4 uses two primary tire sizes: 275/70R18 and 245/75R17. The 275/70R18 size applies to single-rear-wheel Crew Cab, Reg. Cab, and Super Cab models, while 245/75R17 applies to the corresponding dual-rear-wheel DRW versions.

The important next step is matching the tire to the truck's actual wheel and rear-axle configuration. A truck that is dually-equipped needs the 17-inch DRW fitment, while a non-dually truck uses the 18-inch setup. On any used F-350, it also helps to confirm that aftermarket wheels or previous owner changes have not altered the original arrangement.

The 2008 Ford Trucks F-350 Super Duty FX4 uses either an 18-inch rim or a 17-inch rim, depending on configuration. Trucks fitted with 275/70R18 use an 18-inch wheel, and DRW models fitted with 245/75R17 use a 17-inch wheel.

Rim diameter has to match the tire size exactly, so this is not a detail to guess at. Before choosing a tire, check the size already mounted on the truck and verify the wheel itself, especially if the truck has replacement wheels. Confirming diameter first prevents mixing up SRW and DRW fitments that are meant for different wheel packages.

No, the 2008 Ford Trucks F-350 Super Duty FX4 sub-models do not all use the same tire size. Crew Cab, Reg. Cab, and Super Cab models use 275/70R18 in single-rear-wheel form, while Crew Cab (DRW), Reg. Cab (DRW), and Super Cab (DRW) use 245/75R17.

That difference matters because the two sizes also use different rim diameters and different rear-wheel layouts. Tire selection should begin with the truck's exact sub-model and whether it is a dually. Once that is confirmed, the remaining decisions are much simpler and focus on the correct product within the proper size rather than trying to compare unlike fitments.

Start with the correct size for the truck's configuration: 275/70R18 for single-rear-wheel models or 245/75R17 for DRW models. From there, compare radial construction details, load capacity, rim-width compatibility, and the type of tread and sidewall presentation that suits how the truck is used.

A heavy-duty pickup asks more from its tires than appearance alone. Load support, wheel match, and actual use all matter, whether the truck sees towing, road miles, or mixed on- and off-pavement driving. It is also smart to verify the existing wheel setup and make sure the tire choice still makes sense if the truck has been modified since new.

The available tires for the 2008 Ford Trucks F-350 Super Duty FX4 use an RWL sidewall, which means raised white letter styling. That appearance is offered in both of the primary fitments, 275/70R18 and 245/75R17, through the BFGoodrich All-Terrain T/A KO2 line.

Raised white letters give the truck a more assertive, off-road-oriented look than a plain black sidewall. Appearance still comes second to correct fitment, so the right move is to confirm size and wheel diameter first, then decide whether the RWL presentation matches the truck's current style, restoration direction, or everyday use.

BFGoodrich is the available brand for the 2008 Ford Trucks F-350 Super Duty FX4 in the supported sizes shown here. Both the 275/70R18 and 245/75R17 fitments are represented by the All-Terrain T/A KO2 series in radial construction.

With one brand represented, the choice is less about comparing manufacturers and more about selecting the correct size for the truck's SRW or DRW configuration. From there, useful comparisons include rim-width range, load capacity at the stated pressure, sidewall style, and whether the tire's all-terrain character matches how the F-350 is driven and worked.

A period-style choice for a 2008 Ford Trucks F-350 Super Duty FX4 starts with the correct original-type sizing layout for the truck's configuration: 275/70R18 on single-rear-wheel models or 245/75R17 on DRW models. Staying with the proper radial size preserves the truck's intended stance and wheel relationship more faithfully than guessing at an alternate fitment.

Appearance on a late-classic heavy-duty truck is closely tied to proportion and purpose. An all-terrain radial with raised white letters suits the FX4 character well, but exact originality questions should be checked against window sticker information, build documentation, or marque-specific references if a highly accurate restoration is the goal.

On the 2008 Ford Trucks F-350 Super Duty FX4, the primary fitments are radial tires, so keeping the truck on the proper radial construction maintains the look that belongs with this model's era. Construction choice influences sidewall shape, tread presentation, and the overall visual balance between tire, wheel, and ride height.

A restored truck can look noticeably different if the tire profile or wheel package changes, even when the difference seems minor on paper. For a clean, era-appropriate presentation, focus first on the correct size and rim diameter for SRW or DRW use, then consider sidewall styling such as raised white letters as part of the final appearance.

Yes, modifications can affect tire fitment on a 2008 Ford Trucks F-350 Super Duty FX4. Aftermarket wheels, suspension lifts, leveling kits, lowering changes, or axle and brake conversions can change the wheel diameter, width, offset, and the space available around the tire.

That matters even when the truck still appears to use one of the stock sizes. Before replacing tires, check the actual wheel dimensions and look for clearance issues at the fenders, steering components, and rear wheel area on DRW trucks. A truck that has been altered should always be measured against its current setup rather than assumed to be unchanged.

Before driving a 2008 Ford Trucks F-350 Super Duty FX4 on new tires, inspect the wheels for damage, confirm the correct size and inflation, and make sure the tires are seated properly. It also helps to check lug hardware, valve stems, visible tread condition, and any signs of rubbing once the truck is back on the ground.

A heavy-duty pickup places substantial demands on its tires, especially when towing or carrying weight. A short, careful road test can reveal vibration, pull, or clearance problems before the truck is put into regular service. Rechecking pressure after installation and looking over the suspension and steering components adds another useful layer of caution.

Tires on a 2008 Ford Trucks F-350 Super Duty FX4 should be maintained with regular pressure checks, routine visual inspection, and attention to wear patterns. Look for cracking, cuts, bulges, punctures, uneven tread wear, and slow air loss, especially on a truck that sees towing, off-pavement use, or long periods of sitting.

Proper maintenance starts with using the correct size for the truck's SRW or DRW layout and keeping inflation appropriate for the tire and vehicle use. Storage conditions matter too, since heat, sunlight, and long idle periods can age tires even when tread still looks usable. On a work-capable truck, frequent inspection is cheaper than discovering a problem under load.