The 2009 Dodge Trucks Ram 3500 ST sits in the heavy-duty pickup world where payload, towing capability, and real working-truck durability matter as much as appearance. Buyers looking at this exact Ram 3500 ST are usually balancing practical service use with the need to keep the truck properly matched to its wheel and axle setup. Tire fitment centers on two 17-inch radial sizes, 265/70R17 and 235/80R17, depending on the specific cab and dual-rear-wheel configuration. Available choices stay focused and purposeful, with BFGoodrich All-Terrain T/A KO2 options and raised-letter or black-letter sidewall presentation. The key decision is confirming the exact sub-model first, then matching load capability, wheel compatibility, and intended use.
Which Tire Size Is Right for The 2009 Dodge Trucks Ram 3500 ST
Two primary tire sizes apply to the 2009 Dodge Trucks Ram 3500 ST, 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 step is identifying whether the truck is a single-rear-wheel Quad Cab or a dual-rear-wheel configuration. Once that is confirmed, the real comparison becomes load specification, wheel-width compatibility, and sidewall presentation within the correct size.
A 235/80R17 uses a 235-millimeter nominal section width, an 80-series aspect ratio, radial construction, and a 17-inch rim diameter. On the 2009 Dodge Trucks Ram 3500 ST, this size is tied to dual-rear-wheel versions, making it an important fitment distinction rather than just a styling choice. The available BFGoodrich All-Terrain T/A KO2 option in this size uses a black-letter sidewall and a wheel-width range suited to narrower 17-inch rims. This is the size to examine when the truck has a DRW setup and needs a tire matched to that wheel arrangement.
Sub-model fitment matters on the 2009 Dodge Trucks Ram 3500 ST because tire size changes with the truck’s wheel and rear-axle configuration. The covered sub-models share the same 17-inch rim diameter, but single-rear-wheel Quad Cab versions and dual-rear-wheel trucks do not use the same tire size.
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2009 Dodge Trucks Ram 3500 ST 4x2 Quad Cab
This 4x2 Quad Cab uses the 265/70R17 radial size rather than the narrower DRW fitment. Tire selection here centers on matching the correct 17-inch wheel setup and comparing the available load-specification options within that size.
This dual-rear-wheel 4x2 Quad Cab uses 235/80R17 radial tires, making it distinct from the single-rear-wheel Quad Cab. Choosing tires for this sub-model starts with keeping the DRW-specific size and confirming wheel-width compatibility before comparing product details.
This 4x2 regular cab dual-rear-wheel version also uses the 235/80R17 radial fitment. That keeps the decision focused on a proper DRW-size replacement, along with checking wheel dimensions and load requirements for the truck’s intended work.
This 4x4 Quad Cab shares the 265/70R17 radial tire size with the 4x2 Quad Cab single-rear-wheel setup. The next step is comparing the available KO2 options in that size and making sure the chosen tire matches the truck’s wheel width and duty cycle.
This 4x4 Quad Cab dual-rear-wheel model uses 235/80R17 radials instead of the wider single-rear-wheel size. Tire selection should stay focused on that DRW fitment first, then move to wheel-width range, sidewall presentation, and load specification.
This 4x4 regular cab DRW configuration uses the same 235/80R17 radial tire size as the other dual-rear-wheel versions. The practical priority is confirming the truck still has its correct DRW wheel setup before selecting a tire in the proper load-capable range.
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 Dodge Trucks Ram 3500 ST Tires for Sale
Available 2009 Dodge Trucks Ram 3500 ST tire choices stay focused on BFGoodrich All-Terrain T/A KO2 radials in both supported 17-inch sizes. The main comparison points are size, load specification, rim-width range, and sidewall treatment, with raised white letter styling on 265/70R17 and black-letter styling on 235/80R17.
These questions focus on the tire-size split between single-rear-wheel and DRW Ram 3500 ST trucks, along with wheel fitment, product selection, and the maintenance checks that matter before putting a heavy-duty pickup back on the road.
Tire Size & Fitment
What tire size fits a 2009 Dodge Trucks Ram 3500 ST?
The 2009 Dodge Trucks Ram 3500 ST uses either 265/70R17 or 235/80R17, depending on the exact sub-model. Single-rear-wheel Quad Cab versions use 265/70R17, while the dual-rear-wheel configurations use 235/80R17. Both are radial tire sizes designed for 17-inch rims.
The important step is identifying the truck’s exact cab and rear-wheel setup before choosing a tire. A DRW Ram 3500 ST should stay with the DRW-related size, while a single-rear-wheel Quad Cab should use its own fitment. If the truck has been modified, confirm the actual wheel setup on the vehicle before ordering replacements.
What size rim does a 2009 Dodge Trucks Ram 3500 ST use?
Both supported tire sizes for the 2009 Dodge Trucks Ram 3500 ST use a 17-inch rim diameter. That means 265/70R17 and 235/80R17 are both built for 17-inch wheels, even though they differ in width and profile. The tire size change across sub-models is not a switch to a different wheel diameter.
Rim diameter is only one part of fitment, so it is still worth checking wheel width before selecting a tire. The 265/70R17 KO2 options suit a wider rim-width range than the LT235/80R17/E option. On a heavy-duty truck, confirming both the wheel dimensions and the exact rear-wheel configuration helps avoid a mismatch.
Why does the 2009 Dodge Trucks Ram 3500 ST have more than one tire size?
The 2009 Dodge Trucks Ram 3500 ST has more than one tire size because the fitment changes with the truck’s configuration. Single-rear-wheel Quad Cab versions use 265/70R17, while dual-rear-wheel models use 235/80R17. The difference is tied to how the truck is set up rather than simply offering interchangeable size choices.
That means the right tire starts with the exact sub-model, not with appearance alone. A truck with dual rear wheels has different wheel-spacing and fitment needs than a single-rear-wheel truck. Owners should confirm whether the Ram still has its original wheel arrangement, especially if it has seen work-truck modifications or wheel replacements over time.
Choosing the Right Tire
What should I consider when choosing a tire for a 2009 Dodge Trucks Ram 3500 ST?
Start with the correct size for the truck’s configuration: 265/70R17 for certain single-rear-wheel Quad Cab models or 235/80R17 for dual-rear-wheel versions. From there, compare radial construction details such as load capacity, wheel-width range, and sidewall style. Those details matter on a heavy-duty pickup more than cosmetic preference alone.
The available choices stay within the BFGoodrich All-Terrain T/A KO2 line, so the decision becomes more specific. Look at whether the truck needs the higher-capacity 265/70R17 option, whether the wheel width matches the tire, and whether raised white letters or black letters suit the truck’s intended use and overall presentation.
What sidewall styles are available for 2009 Dodge Trucks Ram 3500 ST tires?
Sidewall style depends on the tire size used on the 2009 Dodge Trucks Ram 3500 ST. The 265/70R17 BFGoodrich All-Terrain T/A KO2 options use RWL styling, which is a raised white letter presentation. The 235/80R17 BFGoodrich option uses RBL styling, which is a raised black letter presentation.
That difference means sidewall appearance is partly tied to fitment rather than being a separate choice across every configuration. A single-rear-wheel Quad Cab using 265/70R17 can carry a more pronounced lettering style, while a DRW truck using 235/80R17 stays with black-letter sidewalls. Size and wheel setup should be confirmed first, then sidewall appearance can follow.
What rim-width specifications should I compare when choosing 2009 Dodge Trucks Ram 3500 ST tires?
Rim width is an important comparison point on this truck because the supported tire sizes do not use the same wheel-width range. The 265/70R17 KO2 options fit 7.0- to 9.0-inch rims, while the LT235/80R17/E KO2 fits 6.0- to 7.5-inch rims. Both still use a 17-inch rim diameter.
That matters because a tire can match the wheel diameter and still be wrong for the wheel width. On a Ram 3500 ST, especially one used for towing or hauling, wheel-width compatibility should be checked before focusing on tread style or lettering. This becomes even more important if the truck has aftermarket wheels or replacement steel wheels.
Restoration & Appearance
Does correct tire fitment matter for a 2009 Dodge Trucks Ram 3500 ST restoration?
Correct tire fitment matters on a 2009 Dodge Trucks Ram 3500 ST restoration because the truck uses different tire sizes for single-rear-wheel and dual-rear-wheel configurations. Keeping the proper size helps preserve the truck’s intended stance and wheel relationship. It also prevents a restored truck from looking obviously mismatched at a glance.
Appearance is only part of the equation, since a heavy-duty pickup also depends on the right wheel and load combination. A restoration-minded owner should verify the exact sub-model, confirm the truck’s current wheel setup, and choose a tire that suits both the visual goal and the way the truck will actually be used on the road.
How does tire construction affect the appearance of a restored 2009 Dodge Trucks Ram 3500 ST?
Tire construction is straightforward on the 2009 Dodge Trucks Ram 3500 ST because both supported fitments are radial sizes. That keeps the truck in a modern heavy-duty tire format and gives the finished vehicle a look consistent with its era. The visible appearance difference comes more from size and sidewall lettering than from switching construction types.
A restored single-rear-wheel Quad Cab on 265/70R17 with raised white letters presents differently from a DRW truck on 235/80R17 with black letters. For an owner focused on period-appropriate presentation, the main task is keeping the correct size for the truck’s configuration and choosing the sidewall treatment that best matches the intended finished look.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Dodge Trucks Ram 3500 ST?
Yes, modifications can affect tire fitment on a 2009 Dodge Trucks Ram 3500 ST even when the tire size itself is correct. Aftermarket wheels, changes in wheel width, suspension alterations, or conversions between single- and dual-rear-wheel setups can all change what works on the truck. Diameter alone does not settle the fitment question.
A modified truck should be checked for actual wheel width, tire clearance, and rear-wheel configuration before replacing tires. On a heavy-duty pickup, even a small mismatch can matter when the truck is loaded or turning under compression. Looking closely at the current hardware on the vehicle is more useful than assuming it still matches original configuration.
What should I inspect before driving a 2009 Dodge Trucks Ram 3500 ST on new tires?
Before driving a 2009 Dodge Trucks Ram 3500 ST on new tires, inspect the wheels for correct diameter and width, confirm that the chosen size matches the truck’s exact configuration, and make sure the tires are inflated appropriately for their load specification. It is also wise to look over valve stems, lug hardware, and general wheel condition.
A heavy-duty truck puts real demands on its tires, so a brief clearance and condition check is worthwhile before regular use. Turn the steering through its range, look for any contact points, and confirm the truck sits evenly. On DRW versions, pay especially close attention to the correct size and wheel arrangement before carrying weight or towing.
How often should tires on a 2009 Dodge Trucks Ram 3500 ST be inspected?
Tires on a 2009 Dodge Trucks Ram 3500 ST should be inspected regularly, especially if the truck tows, carries heavy loads, or sits for stretches between uses. Check pressure, tread wear, sidewall condition, and any signs of cuts, bulges, or irregular wear. A work-oriented truck benefits from more frequent visual checks than a lightly used vehicle.
Consistent inspections help catch wheel-alignment or load-related issues before they become more serious. A truck that sees occasional use can still develop age-related cracking or air loss, so time in storage is not a substitute for inspection. Looking at the tires before longer drives and after hauling duty is a sensible habit on a Ram 3500 ST.
