1975 Dodge Pickup Tires

A 1975 Dodge Pickup does not use one universal tire size. Depending on the exact truck, primary fitments include G78-15, H78-15, L78-15, LR78-15, 700-15, 750-16, 800-16.5, 875-16.5, 950-16.5, 8.00R16.5, 8.75R16.5, and 9.50R16.5.

The correct choice depends on the truck’s specific D-series or W-series sub-model, along with GVWR, wheelbase, cab style, and whether it is a snow-plow or dual-rear-wheel application. Start by confirming the wheel diameter first, since 15-inch, 16-inch, and 16.5-inch setups all appear on this model year, then match the exact size and construction type.

A 1975 Dodge Pickup may use 15-inch, 16-inch, or 16.5-inch rims, depending on the exact sub-model. The 15-inch group covers sizes such as G78-15, H78-15, L78-15, LR78-15, and 700-15, while 750-16 uses a 16-inch rim and several heavier-duty truck sizes use 16.5-inch rims.

That difference matters because 16-inch and 16.5-inch wheels are separate fitments even though the numbers seem close. Check the wheel itself or the tire sidewall before choosing a replacement, especially on D200, D300, W200, and W300 trucks where multiple heavy-duty sizes appear across similar-looking applications.

The 1975 Dodge Pickup covered a wide spread of half-ton, three-quarter-ton, one-ton, two-wheel-drive, four-wheel-drive, snow-plow, and dually applications. That broad range is why the truck can use multiple tire diameters, multiple size systems, and both bias-ply and radial-style fitments depending on configuration.

A W150 4x4, a D100 4x2, and a D300 dually are all very different trucks even though they share the same model-year family. Tire selection becomes much easier once the exact sub-model is pinned down, because that tells you which wheel diameter, construction type, and size range should be considered first.

LR78-15 is the radial-type 15-inch fitment used on certain 1975 Dodge Pickup applications. It is not the same construction as G78-15, H78-15, or L78-15, which are vintage alphanumeric bias-ply sizes, even though those sizes share the same general 15-inch wheel family.

That distinction matters because a truck set up for LR78-15 should not be treated as though every 15-inch bias-ply option is automatically the right substitute. Confirm the truck’s existing wheel width, overall tire presentation, and intended use before changing construction, especially if the goal is to preserve either a period-style radial look or a traditional bias-ply setup.

G78-15 has radial equivalents in 205R15, P215/75R15, P225/70R15, and 710R15. H78-15 corresponds to 215R15, P225/75R15, P235/70R15, and 760R15, while L78-15 corresponds to 235R15, P235/75R15, P255/70R15, and 820R15. In each group, the last size is the bias-look radial option.

Those equivalents all stay within the 15-inch wheel family, but they use different sizing systems and profile conventions. The recommended rim-width range for these radial equivalents is 6-8 inches, and the final choice should still be checked against the truck’s wheel width, overall dimensions, and steering or fender clearance before changing from the original bias-ply fitment.

Start with the exact original size, wheel diameter, and wheel width on the truck. On a 1975 Dodge Pickup, that is especially important because this model year spans 15-inch, 16-inch, and 16.5-inch wheels, and only certain 15-inch bias-ply sizes have clearly defined radial-equivalent options.

Also compare the truck’s current clearance at the fenders, suspension, and steering components before moving to an equivalent radial size. A conversion should take the truck’s intended use into account as well, since a restoration-oriented build may favor a traditional bias-ply appearance, while a road-use-focused truck may be evaluated differently within the correct wheel and size family.

The first step is identifying the exact sub-model so the tire size, wheel diameter, and construction type are correct for the truck. A 1975 Dodge Pickup can use several very different fitments, ranging from 15-inch light-truck sizes to 16-inch snow-plow applications and 16.5-inch heavy-duty or dually tires.

After size is settled, compare the tire’s intended character. Some options lean toward traditional passenger-style appearance with whitewalls, while others are blackwall truck tires in series such as Traxion, Super Transport, or Transport Highway. Rim-width compatibility, load figures where shown, and whether the truck is being restored or regularly driven all help narrow the right choice.

Sidewall choices for 1975 Dodge Pickup tires include blackwall, wide whitewall, narrow whitewall, and dual-white-stripe treatments, depending on the size. The broader whitewall variety shows up mainly in some 15-inch and 16-inch classic-style sizes, while many 16.5-inch heavy-duty truck sizes are blackwall only.

That means appearance choice depends heavily on the truck’s actual fitment. A half-ton or snow-plow application with 15-inch or 16-inch tires may offer more restoration-style visual variety, while a D200, D300, W200, or W300 on 16.5-inch tires usually points toward a more work-truck presentation. Matching the right sidewall starts with matching the correct size first.

Available brands for 1975 Dodge Pickup tire sizes include Coker Classic, STA, BFGoodrich, Firestone, and Lester. Brand coverage varies by size, so a 15-inch fitment may have several appearance-oriented and truck-oriented choices, while some heavier 16.5-inch sizes are centered mainly around STA truck lines.

Brand selection should come after the size and construction are confirmed. Once the correct fitment is known, the practical comparison is between series, sidewall treatment, load-related specifications where shown, and whether the truck is being kept as a restoration project, a period-style driver, or a heavier-duty utility vehicle.

A period-style starting point for a 1975 Dodge Pickup is the truck’s exact primary tire size in its original sizing family, whether that means an alphanumeric bias-ply size like G78-15 or L78-15, a numeric truck size like 700-15 or 750-16, or one of the heavier 16.5-inch bias-ply applications.

From there, the right choice depends on what kind of truck is being restored. A lighter pickup may suit a classic whitewall presentation, while a heavier-duty or four-wheel-drive truck may look more natural with blackwall truck tires. When exact originality matters, vehicle-specific historical references and marque expertise are worth checking before settling on brand or sidewall detail.

Tire construction changes more than ride feel on a restored 1975 Dodge Pickup; it also changes visual character. Bias-ply tires maintain the traditional vintage sizing format used on most primary fitments here, while radial-type options such as LR78-15 or bias-look radial equivalents can shift the truck toward a later-looking road-use presentation.

That choice comes down to restoration goals. Owners chasing a work-truck or showroom-era look often stay close to the original size family and sidewall style, while those building a driver may consider radial alternatives where they exist. Either way, keeping the correct wheel diameter and overall fitment proportions should stay ahead of appearance alone.

Yes. Modifications can change tire fitment on a 1975 Dodge Pickup even when the tire size is correct for the original sub-model. Aftermarket wheels, suspension changes, ride-height changes, brake conversions, and body or fender alterations can all affect whether the intended tire still has proper clearance.

That matters even more on this model year because several sizes share similar truck-duty roles while using different wheel diameters and constructions. A modified truck should be checked for wheel width, steering clearance, suspension travel, and dual-wheel spacing where applicable before replacement tires are chosen, rather than relying only on the original sub-model specification.

Inspect the wheels, lug hardware, valve stems, and overall clearance first. A 1975 Dodge Pickup may use 15-inch, 16-inch, or 16.5-inch wheels, so it is important to confirm that the wheels are in sound condition and correctly matched to the tire size being installed before the truck goes back on the road.

After installation, check inflation, look for any contact at full steering lock or suspension movement, and recheck for air loss after initial use. On dual-rear-wheel models, inspect spacing between the rear tires as well. A careful visual review is especially worthwhile on collector trucks that may have sat for long periods or changed hands several times.

Collector-vehicle tires should be kept properly inflated, inspected regularly, and protected from long idle periods in poor storage conditions. On a 1975 Dodge Pickup, that includes watching for sidewall cracking, cuts, bulges, flat spotting, uneven wear, and slow air loss, especially if the truck is driven infrequently or stored for much of the year.

Storage environment matters as much as mileage on an older truck. Keeping the pickup away from prolonged sun, excess heat, moisture, and ozone sources helps preserve the tires, and occasional inspection of wheel condition is just as important on older heavy-duty applications. Before any longer drive, a pressure check and close visual inspection are wise.