Plymouth Trailduster Tires
The Plymouth Trailduster was Plymouth’s full-size sport utility in the late 1970s, built for buyers who wanted open-air utility, truck toughness, and distinctly Mopar styling in the same package. Produced from 1974 through 1979, Plymouth Trailduster models sit at an interesting point where traditional bias-ply truck and passenger tire sizes overlapped with later radial-era sizing. Tire selection is not always straightforward because several different 15-inch sizes appear across the production run, and some years list multiple possible fitments tied to configuration and intended use. Before choosing a tire for a Plymouth Trailduster, the most important step is matching the actual size and service type fitted to the vehicle today.
Plymouth Trailduster Tire Size Guide
Plymouth Trailduster listings cover 8 distinct tire sizes across the 1974 to 1979 production span. All of the sizes here use 15-inch rims, but the size coding changes during production from numeric and alphanumeric bias-ply sizes to later radial-style alphanumeric sizing in 1979. That matters because the same model year can carry very different tire types even though the wheel diameter stays the same.
The 700-15 size appears across the full 1974 through 1979 Plymouth Trailduster run and is one of the core truck-oriented fitments in this group. In this numeric bias-ply format, 700 indicates a nominal section width of about 7.00 inches and 15 is the rim diameter, with available products built for 15-inch wheels. Choose 700-15 when your Trailduster is already fitted for that size or when period-style truck service is the goal; a tube is required.
H78-15 fits Plymouth Trailduster applications from 1974 through 1978 and sits in the mid-range of the alphanumeric bias-ply sizes listed for those years. The H identifies the tire’s width and load class, 78 is the aspect-series designation, and 15 is the rim diameter, with listed products built for 15-inch wheels. Choose H78-15 when your vehicle calls for that specific alphanumeric bias size rather than a numeric truck tire; a tube is required.
L78-15 is listed from 1974 through 1979 and is the broadest-running alphanumeric passenger-style size in the Plymouth Trailduster range. The L identifies a larger width and load class than smaller letter sizes, 78 is the series designation, and 15 is the rim diameter, with products intended for 15-inch wheels. Choose L78-15 when the vehicle is set up for that larger alphanumeric fitment and you want a period-correct bias-ply appearance; a tube is required.
E78-15 is listed for 1974 through 1978 Plymouth Trailduster models as one of the smaller alphanumeric sizes in the range. The E indicates the tire’s relative width and load class, 78 is the aspect-series designation, and 15 is the rim diameter for a 15-inch wheel. Choose E78-15 only when the vehicle’s existing fitment or factory specification points to that smaller alphanumeric size; a tube is required.
G78-15 appears on 1974 through 1978 Plymouth Trailduster listings and falls between the smaller E78 and larger H78 and L78 sizes. The G identifies the tire’s width and load class, 78 is the series designation, and 15 is the rim diameter, with available products built for 15-inch wheels. Choose G78-15 when your Trailduster is already using that alphanumeric fitment or when matching a period-style setup; a tube is required.
FR78-15 is a 1979-only Plymouth Trailduster size and represents the later radial-style alphanumeric coding that appears at the end of production. The F identifies the tire’s width class, R indicates radial construction, 78 is the series designation, and 15 is the rim diameter. Choose FR78-15 only when the vehicle specifically calls for that 1979 radial-era size, since it is not interchangeable by name with the earlier bias-ply letter sizes.
HR78-15 is listed only for 1979 Plymouth Trailduster applications and marks a later radial-format alternative to earlier bias-ply sizing. The H identifies the width class, R denotes radial construction, 78 is the series designation, and 15 is the rim diameter. Choose HR78-15 when a 1979 Trailduster is specified for that radial size rather than an earlier H78-15 bias-ply equivalent by appearance.
LR78-15 is a 1979 Plymouth Trailduster size and the available product in this listing is a bias-look radial intended for 15-inch wheels. The L identifies the width class, R indicates radial construction, 78 is the series designation, and 15 is the rim diameter. Choose LR78-15 when the goal is a later radial driving character with a period-style look on a 1979 vehicle.
Buyers with a 1974 through 1979 Plymouth Trailduster should identify the specific trim level or body style before selecting a size, since more than two fitments are listed within the same model year.
Plymouth Trailduster Tires by Year
The year listing below helps narrow Plymouth Trailduster tire choices by production year, especially where several sizes appear in the same year. In 1974 through 1979, more than two sizes are listed, so confirm the specific trim level or body style before choosing. The 1979 listings also introduce radial-style size codes alongside earlier bias-ply sizing, which makes it especially important to match the exact size already fitted to the vehicle.
1974 Plymouth Trailduster
- 700-15
- H78-15
- L78-15
- E78-15
- G78-15
1975 Plymouth Trailduster
- 700-15
- H78-15
- L78-15
- E78-15
- G78-15
1976 Plymouth Trailduster
- 700-15
- H78-15
- L78-15
- E78-15
- G78-15
1977 Plymouth Trailduster
- 700-15
- H78-15
- L78-15
- E78-15
- G78-15
1978 Plymouth Trailduster
- 700-15
- H78-15
- L78-15
- E78-15
- G78-15
1979 Plymouth Trailduster
- FR78-15
- HR78-15
- LR78-15
- 700-15
- L78-15
Best Plymouth Trailduster Tires for Sale
Available Plymouth Trailduster tires span 4 brands and 23 products across 700-15, H78-15, L78-15, G78-15, and LR78-15 sizes. Options include passenger-style bias-ply selections, truck-oriented designs, and one bias-look radial, so confirm the exact size and intended use before selecting.
700-15 Products
These are the available products for 700-15.
H78-15 Products
These are the available products for H78-15.
L78-15 Products
These are the available products for L78-15.
G78-15 Products
These are the available products for G78-15.
LR78-15 Products
These are the available products for LR78-15.
Frequently Asked Questions
The FAQ below addresses the size spread used on Plymouth Trailduster models, the shift from earlier bias-ply sizing to 1979 radial-style codes, and the practical differences between passenger-style and truck-service tire choices.
Size Basics & Fitment
Plymouth Trailduster models use 700-15 from 1974 through 1979, H78-15 from 1974 through 1978, L78-15 from 1974 through 1979, E78-15 from 1974 through 1978, G78-15 from 1974 through 1978, and in 1979 also FR78-15, HR78-15, and LR78-15. Every listed size in this range is built for a 15-inch rim, but the size families differ between numeric truck sizes, bias-ply alphanumeric sizes, and later radial-style alphanumeric sizes.
The practical takeaway is that year alone is not enough to pick a tire for a Plymouth Trailduster. Start with the tire size already on the vehicle, then confirm the wheel diameter and the type of service the truck is set up for, since some choices lean toward passenger-style period appearance while others are more truck-oriented.
A 700-15 on a Plymouth Trailduster is a numeric bias-ply size. The 700 indicates a nominal section width of about 7.00 inches, and the 15 is the rim diameter. Products in this size are offered for 15-inch wheels and appear throughout the 1974 to 1979 production run.
That makes 700-15 one of the easier Plymouth Trailduster sizes to identify, but it still should not be treated as interchangeable with letter-series passenger sizes simply because the wheel diameter matches. If the truck currently carries 700-15 tires or original references point to that size, it is the correct starting point for a period-style replacement.
A 1979 Plymouth Trailduster can show 5 tire sizes because that model year includes multiple configuration-based fitments and also spans more than one construction era. The 1979 listings include 700-15 and L78-15 alongside FR78-15, HR78-15, and LR78-15, all on 15-inch rims. That means one year can include both traditional bias-ply style sizes and later radial-style size codes.
The key is to identify the exact configuration of the Plymouth Trailduster rather than relying on the calendar year alone. Check the size stamped on the existing tires, compare it with wheel width if known, and match the vehicle’s intended appearance and driving character before moving from an earlier bias-ply setup to a later radial-style fitment.
Most of the Plymouth Trailduster sizes listed here are bias-ply designs in numeric or non-radial alphanumeric formats, and those generally call for tube-type fitment in this range. That applies to 700-15, H78-15, L78-15, E78-15, and G78-15. The one radial-style product listed is LR78-15, which differs in construction and should be treated separately from the bias-ply options.
Inner tube requirements should still be checked against the actual wheel and the exact tire being fitted, especially on a collector truck that may have had wheels changed over the years. If the goal is authentic bias-ply operation, plan the installation as a complete system that includes the correct tube and compatible wheel condition.
Buying the Right Tire
A 1976 Plymouth Trailduster can be listed with 700-15, H78-15, L78-15, E78-15, or G78-15, all using 15-inch rims. That means there is not one universal size for every 1976 truck. The correct choice depends on the specific configuration and on whether the vehicle is set up with a numeric truck tire or an alphanumeric passenger-style tire.
The best approach is to inspect the size on the vehicle now, compare front and rear for consistency, and verify the wheel dimensions before replacing anything. If the truck is being restored, use factory literature, marque references, or long-term ownership records to decide whether the current fitment matches the intended configuration.
Plymouth Trailduster tire offerings here include blackwall, wide whitewall, narrow whitewall, and dual-white-stripe sidewall treatments, depending on size. Blackwall choices are common in the truck-oriented 700-15, H78-15, L78-15, and G78-15 offerings, while some passenger-style L78-15, H78-15, and G78-15 products add whitewall or stripe variations. The lone LR78-15 radial-style product is offered with a narrow whitewall.
That variety lets a Plymouth Trailduster owner lean toward either a more utility-focused appearance or a more styled period look. For a restoration-minded truck, sidewall style should be chosen with the era and the truck’s original presentation in mind, rather than simply picking the closest overall size.
Plymouth Trailduster tires in this group come from Firestone, BFGoodrich, STA, and Coker Classic. Those brands cover a mix of classic bias-ply passenger tires, truck-service patterns, military-style designs, and one radial-style offering. The brand mix also changes by size, so not every brand appears in every fitment.
Brand choice should follow the type of Plymouth Trailduster you are building and how you plan to use it. A truck intended for rugged period appearance may point you toward the more utility-oriented patterns, while a road-focused restoration may benefit from a passenger-style sidewall and tread design that better matches the truck’s visual character.
Plymouth Trailduster products here include Firestone Classic Bias Ply, Silvertown Classic Bias Ply, Coker Classic Bias Ply, Firestone Classic Military, Traxion, Super Traxion, Super Transport, Transport Highway, and Wide Oval Radial. Those series reflect different construction approaches and intended uses, from traditional passenger-style bias-ply designs to heavier-duty truck and military-style patterns, plus a later bias-look radial option in LR78-15.
The important distinction is not just brand but service character. A Plymouth Trailduster built for show presentation, a stock-style restoration, or truck-duty visual authenticity may point to different series even when the size matches, so series selection should support both the appearance and driving use you want from the vehicle.
Maintenance & Longevity
A Plymouth Trailduster should be stored on a clean, dry surface away from direct sunlight, electric motors, welders, and ozone-producing equipment that can age rubber prematurely. Keep the tires properly inflated for the tire type and load they are carrying, and avoid long-term parking with extra cargo weight in the vehicle. Clean tires with mild soap and water rather than dressings that can dry the surface over time.
For a collector truck that sits for long periods, moving the Plymouth Trailduster periodically helps prevent flat spotting, especially with bias-ply construction. If the vehicle will be parked for an extended season, many owners also reduce strain by supporting the truck appropriately and checking pressure regularly rather than letting the tires sit under load while underinflated.
Tires on a Plymouth Trailduster should be visually checked before every drive and inspected more thoroughly at regular intervals even if the truck sees only occasional use. Look for cracking, weathering, uneven wear, bulges, punctures, valve issues, and any signs of tube or casing problems on bias-ply fitments. Collector vehicles often age tires by time and storage conditions long before tread is worn out.
A more detailed inspection at least a few times each season is a wise routine, especially if the Plymouth Trailduster is driven on highways or carries show-quality tires that see long idle periods. Include the spare in that routine, since older spare tires are often forgotten until they are needed and may be in the worst condition of the set.
A Plymouth Trailduster tire should be replaced when age, cracking, hardening, sidewall damage, vibration, repeated air loss, or structural concerns appear, even if the tread still looks deep. Collector tires are often retired because the rubber and casing have aged rather than because the tread has worn out. That is especially important for older bias-ply designs and for low-mileage trucks that spend much of their time parked.
Any tire with uncertain age or history deserves extra caution on a Plymouth Trailduster, because visual appearance alone does not confirm serviceability. Regular replacement decisions should be guided by condition, storage history, and the way the truck is used, with more conservative standards for highway use than for short-distance display driving.
Restoration & Authenticity
Original Plymouth Trailduster fitment was not limited to one single tire across the whole production run. The size range includes 700-15, H78-15, L78-15, E78-15, G78-15, and in 1979 also FR78-15, HR78-15, and LR78-15, with available product families spanning classic bias-ply passenger tires, truck-oriented patterns, and a later radial-style option. That spread reflects the fact that different years and configurations used different tire approaches.
For an authentic restoration, the most accurate path is to match the specific year and configuration of the Plymouth Trailduster rather than choosing a tire only by appearance. Factory literature, original photos, and marque-specific references are the best way to narrow the truck to the correct size family, sidewall treatment, and construction style.
Correct tire fitment can absolutely affect how a Plymouth Trailduster is evaluated, especially when the truck is restored for show, concours-style presentation, or marque judging. Size, sidewall style, tread character, and construction type all influence whether the truck looks era-appropriate. A radial-style tire on a truck expected to show bias-ply details, or the wrong sidewall treatment, can change the overall impression quickly.
For a serious restoration, tire choice should be treated as part of the visual and mechanical specification of the Plymouth Trailduster, not as an afterthought. Marque clubs, period brochures, and photos of unrestored examples are often the best references when deciding whether a blackwall truck tire or a passenger-style whitewall presentation is more appropriate.
A Plymouth Trailduster restoration can be fitted with blackwall, wide whitewall, narrow whitewall, or dual-white-stripe tires within the available size range, but the correct style depends on the truck’s original character and presentation. Blackwall choices are the most utility-oriented and are especially common in the truck-service offerings, while whitewall and stripe variations appear mainly in passenger-style bias-ply sizes. The radial-style LR78-15 option is offered as a narrow whitewall.
The right sidewall for a Plymouth Trailduster restoration should match the trim level, intended look, and period reference material for the exact truck. If the goal is a stock utility appearance, blackwalls usually make the strongest case, while a more styled trim presentation may justify one of the whitewall or stripe treatments in the correct size.
Safety & Road Use
A Plymouth Trailduster can be driven on public roads when its tires are in sound condition, correctly fitted to the wheel, and appropriate for the way the truck is used. The available choices here include both passenger-style bias-ply tires and heavier-duty truck patterns, plus one bias-look radial. Safety depends less on the name of the size and more on selecting the correct construction, inspecting the tire carefully, and matching it to a roadworthy vehicle.
A collector truck should always be evaluated as a complete system before regular road use. On a Plymouth Trailduster, that means checking steering, suspension, brakes, wheel condition, alignment, and tire age together, because even a correct-looking tire is only one part of safe operation.
Before driving a Plymouth Trailduster, check inflation pressure, visible sidewall condition, tread surface, valve stems, wheel security, and any sign of rubbing or uneven wear. Bias-ply tires also deserve attention for flat spotting after storage, while the single radial-style option should be checked for age and uniform wear like any other collector tire. A quick walk-around often catches issues before they become roadside problems.
It also pays to confirm that all four tires on the Plymouth Trailduster match in size family and intended use. Mixing a passenger-style bias-ply setup with truck-duty patterns or combining mismatched constructions can change handling and braking feel, so consistency across the set matters as much as individual tire condition.
A Plymouth Trailduster fitted with original-type bias-ply tires should be driven at conservative speeds that respect the age of the vehicle, the construction of the tire, and the truck’s overall mechanical condition. Even with fresh production collector tires, these designs do not behave exactly like modern high-speed truck tires. The radial-style LR78-15 option may feel different on the road, but it still belongs on a vintage vehicle that should be driven thoughtfully.
The sensible approach is to let the condition and purpose of the Plymouth Trailduster set the pace. For local driving, touring, or occasional highway use, keep speeds moderate, avoid sudden maneuvers, and remember that suspension geometry, braking ability, and steering response all come from a 1970s utility vehicle rather than a modern SUV.