The 2005 Dodge Trucks Ram 3500 ST sits in the heavy-duty pickup world where tire choice matters as much for working capability as it does for stance and road manners. In this era, the Ram 3500 was a serious three-quarter-ton-and-up platform, and sub-model details play a big role in getting the fitment right. This model uses two primary 17-inch radial tire sizes, 265/70R17 and 235/80R17, depending on configuration. Available choices center on BFGoodrich All-Terrain T/A KO2 products, with different load specifications and raised-letter or black-letter sidewall presentation. The key first step is matching the exact cab and single- or dual-rear-wheel setup before comparing tire details.
Which Tire Size Is Right for The 2005 Dodge Trucks Ram 3500 ST
The 2005 Dodge Trucks Ram 3500 ST uses two primary tire sizes, and the difference comes down to the exact sub-model rather than a change in rim diameter. Both sizes are radial tires for 17-inch wheels, so the first job is confirming whether the truck is a single-rear-wheel Quad Cab or one of the dual-rear-wheel configurations before choosing a tire.
265/70R17 is a metric radial size in which 265 identifies the nominal section width in millimeters, 70 is the aspect ratio, R denotes radial construction, and 17 is the wheel diameter in inches. On the 2005 Dodge Trucks Ram 3500 ST, this size applies to certain single-rear-wheel Quad Cab configurations and keeps the truck in a modern light-truck sizing format. Available choices in this size include BFGoodrich All-Terrain T/A KO2 tires with raised white letter sidewalls and different load specifications. It is the size to evaluate when the truck has the non-DRW 17-inch wheel setup and the buyer wants to compare load capability within the same tire family.
235/80R17 is a metric radial size where 235 is the nominal section width in millimeters, 80 is the aspect ratio, R indicates radial construction, and 17 designates the wheel diameter in inches. On the 2005 Dodge Trucks Ram 3500 ST, this size is used on the dual-rear-wheel configurations, making it a fitment tied closely to the truck's DRW setup. BFGoodrich All-Terrain T/A KO2 is available in this size with a black-letter sidewall presentation and heavy-duty load capacity. This is the size to focus on when maintaining the proper tire format for a dually truck and confirming compatibility with the intended wheel width.
Tire fitment varies across the covered 2005 Dodge Trucks Ram 3500 ST sub-models, even though all of them use 17-inch radial tires. Checking the exact cab and whether the truck is single-rear-wheel or dual-rear-wheel is the step that determines which primary size belongs on the truck.
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2005 Dodge Trucks Ram 3500 ST 4x2 Quad Cab
The 2005 Dodge Trucks Ram 3500 ST 4x2 Quad Cab uses the 265/70R17 radial size rather than the narrower 235/80R17 dually fitment. Tire selection here centers on matching that 17-inch single-rear-wheel setup and then comparing the available load specifications within the BFGoodrich All-Terrain T/A KO2 line.
The 2005 Dodge Trucks Ram 3500 ST 4x2 Quad Cab (DRW) uses the 235/80R17 radial size for its dual-rear-wheel configuration. That makes wheel setup confirmation especially important, since dually trucks need the correct size and wheel-width compatibility before moving on to tread and sidewall preferences.
The 2005 Dodge Trucks Ram 3500 ST 4x2 Reg. Cab (DRW) also uses 235/80R17 radial tires on 17-inch wheels. For this sub-model, the practical decision is less about choosing between sizes and more about keeping the correct dually fitment and reviewing the tire's load specification for the truck's intended use.
The 2005 Dodge Trucks Ram 3500 ST 4x4 Quad Cab uses the 265/70R17 radial tire size. That points the buyer toward the single-rear-wheel 17-inch setup, where the main comparison becomes load specification and sidewall presentation within the available BFGoodrich all-terrain offering.
The 2005 Dodge Trucks Ram 3500 ST 4x4 Quad Cab (DRW) uses 235/80R17 radial tires, matching the dually-oriented fitment rather than the wider 265/70R17 single-rear-wheel setup. Tire selection should stay focused on correct DRW sizing first, then on wheel-width compatibility and load details for the truck's use.
The 2005 Dodge Trucks Ram 3500 ST 4x4 Reg. Cab (DRW) uses the 235/80R17 radial size on 17-inch wheels. For this configuration, the important step is preserving the proper dually tire format and checking wheel fitment details before comparing product specifications.
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 2005 Dodge Trucks Ram 3500 ST Tires for Sale
Available 2005 Dodge Trucks Ram 3500 ST tire choices center on BFGoodrich All-Terrain T/A KO2 products in 265/70R17 and 235/80R17. The product grid is most useful for comparing load specifications, rim-width compatibility, and sidewall presentation, including raised white letter and black-letter options.
Common questions for the 2005 Dodge Trucks Ram 3500 ST usually come down to the right tire size for the exact sub-model, 17-inch wheel fitment, product selection, and the maintenance checks that matter before putting a heavy-duty truck back on the road.
Tire Size & Fitment
What tire size fits a 2005 Dodge Trucks Ram 3500 ST?
The 2005 Dodge Trucks Ram 3500 ST uses either 265/70R17 or 235/80R17, and both are radial tires for 17-inch wheels. The 265/70R17 size is used on the 4x2 Quad Cab and 4x4 Quad Cab single-rear-wheel trucks, while 235/80R17 is used on the dual-rear-wheel Quad Cab and Regular Cab configurations.
The important part is matching the size to the exact truck setup instead of assuming every Ram 3500 ST uses the same tire. A quick check of the cab style, rear-wheel arrangement, wheel width, and the existing tire placard helps confirm whether the truck is a single-rear-wheel or dually configuration before replacement.
What size rim does a 2005 Dodge Trucks Ram 3500 ST use?
The covered 2005 Dodge Trucks Ram 3500 ST fitments use 17-inch wheels. Both primary tire sizes, 265/70R17 and 235/80R17, are built around that same 17-inch rim diameter, even though the trucks do not all use the same tire width and profile.
Rim diameter is only one part of the fitment picture on a heavy-duty truck like this. Wheel width still matters, especially because the available 265/70R17 and 235/80R17 products have different rim-width ranges, so the best practice is to confirm the actual wheel size on the truck before comparing tires.
Why does the 2005 Dodge Trucks Ram 3500 ST have more than one tire size?
The 2005 Dodge Trucks Ram 3500 ST has more than one tire size because its sub-models are not all configured the same way. Single-rear-wheel Quad Cab models use 265/70R17, while the dual-rear-wheel versions, including Quad Cab and Regular Cab trucks, use 235/80R17.
That difference means the first tire decision is really a truck-configuration decision. Cab style alone is not enough, since the rear-wheel setup changes the fitment, so checking whether the truck is DRW or non-DRW is more useful than comparing tread style before the size has been confirmed.
Choosing the Right Tire
What should I consider when choosing a tire for a 2005 Dodge Trucks Ram 3500 ST?
Start with the correct primary size for the exact truck, since the 2005 Dodge Trucks Ram 3500 ST uses either 265/70R17 or 235/80R17 depending on configuration. After that, compare construction, wheel compatibility, and load specification within the available BFGoodrich All-Terrain T/A KO2 choices.
A heavy-duty pickup asks for more than a quick size match. Looking at the truck's wheel width, whether it is single- or dual-rear-wheel, and how the truck is actually used helps narrow the choice between available versions in the same size, especially where load capacity and inflation rating differ.
What sidewall styles are available for 2005 Dodge Trucks Ram 3500 ST tires?
Sidewall appearance varies by size on the 2005 Dodge Trucks Ram 3500 ST. The available 265/70R17 BFGoodrich All-Terrain T/A KO2 options use an RWL sidewall, while the 235/80R17 BFGoodrich All-Terrain T/A KO2 uses an RBL sidewall.
That means sidewall style is tied partly to fitment, not just appearance preference. Buyers with single-rear-wheel Quad Cab trucks will be looking at raised white letter presentation in the available products, while dually owners using 235/80R17 will be comparing a black-letter option within the correct working-truck size.
What brands offer tires for the 2005 Dodge Trucks Ram 3500 ST?
BFGoodrich is the available brand across the covered tire options for the 2005 Dodge Trucks Ram 3500 ST. The products shown are from the All-Terrain T/A KO2 series, offered in both 265/70R17 and 235/80R17 depending on the truck's specific configuration.
Since the brand choice is straightforward here, the real comparison shifts to the details within the tire size that matches the truck. Load specification, wheel-width compatibility, and sidewall treatment become more important than brand-to-brand comparison once the correct Ram 3500 ST fitment has been confirmed.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2005 Dodge Trucks Ram 3500 ST?
Yes, modifications can affect tire fitment on a 2005 Dodge Trucks Ram 3500 ST even when the tire size appears correct on paper. Aftermarket wheels, altered wheel width, suspension changes, or differences between single- and dual-rear-wheel setups can all change how a 265/70R17 or 235/80R17 tire sits on the truck.
A truck that has been lifted, lowered, re-wheeled, or converted from its original setup should be checked carefully before replacement. Verifying actual wheel dimensions, rear-wheel configuration, and clearance at full steering lock and suspension travel is especially important on a Ram 3500 that may carry weight or see uneven road surfaces.
What should I inspect before driving a 2005 Dodge Trucks Ram 3500 ST on new tires?
Before putting a 2005 Dodge Trucks Ram 3500 ST back into regular use on new tires, inspect the wheels, valve stems, lug hardware, and overall condition of the suspension and steering components. Tire pressure should be set correctly for the installed tire, and the tires should be checked for proper seating and even clearance.
A heavy-duty truck also deserves a second look after the first miles on fresh tires. Rechecking inflation, watching for any rubbing, and confirming stable handling under normal driving or light load can help catch wheel or fitment issues early, especially on dually models where the correct setup matters at both axles.
How often should tires on a 2005 Dodge Trucks Ram 3500 ST be inspected?
Tires on a 2005 Dodge Trucks Ram 3500 ST should be inspected regularly, not just when replacement time arrives. Pressure, tread wear, cuts, bulges, uneven wear patterns, and signs of aging all deserve attention, particularly on a truck that may sit for periods and then return to towing, hauling, or longer highway use.
A simple visual check before routine driving is smart, and a more careful inspection before a long trip is even better. On trucks with dual rear wheels, keeping an eye on condition across all tires is especially important, since mismatched wear or unnoticed air loss can affect how the truck carries load and tracks on the road.
