1973 International Pickup 1110 Tires

The 1973 International Pickup 1110 uses three primary tire sizes: 700-15, G78-15, and H78-15. All three are bias-ply fitments for 15-inch rims, so the truck does not point to one universal size without first confirming the wheel and tire setup already on the vehicle.

That matters because many surviving International pickups have seen wheel changes, replacement tires, or mixed restoration histories over the years. Matching the truck’s existing rim diameter, wheel width, and clearance is the practical next step, especially before moving between numeric and alphanumeric bias-ply sizes or considering a radial-equivalent alternative.

The 1973 International Pickup 1110 uses 15-inch rims with its primary tire sizes. The applicable sizes 700-15, G78-15, and H78-15 all share that same 15-inch rim diameter, which keeps rim-diameter selection simpler than on trucks that used multiple wheel diameters.

Rim diameter is only the first check, though. Wheel width also matters, since available tires in these sizes call for different rim-width ranges, and that affects whether a given bias-ply or radial-equivalent option is a sensible match. Measuring the wheel before ordering helps avoid choosing a tire that is correct in diameter but mismatched in width.

The covered 1973 International Pickup 1110 sub-models use the same fitment range. Both the 1/2-20 studs version and the 5/8-18 studs version use 700-15, G78-15, and H78-15 bias-ply tires on 15-inch rims.

That shared fitment means the stud-pattern difference does not change the basic tire-size menu, but it is still worth checking the truck’s actual wheels and hardware. A pickup that has been updated with different rims, later wheels, or suspension changes may still need a more careful size and clearance review before settling on one of the three primary sizes.

G78-15 is a bias-ply primary tire size for the 1973 International Pickup 1110. It belongs to the vintage alphanumeric sizing system, and the available G78-15 products for this truck are bias-ply tires rather than radial tires.

That distinction matters because a buyer may want either the traditional look and construction of a bias-ply tire or the option to compare a radial alternative in a similar overall category. A G78-15 truck should have its wheel width, clearance, and intended use reviewed before moving away from the original-style bias-ply format.

Radial equivalents for G78-15 include 205R15 as an 80-series metric radial, P215/75R15 as a 75-series P-metric radial, P225/70R15 as a 70-series P-metric radial, and 710R15 as a bias-look radial. Each option keeps the 15-inch rim format while using a different sizing convention or profile family.

The useful difference is that the 205R15 stays in a Euro-metric style, the P-metric sizes move into more modern notation, and the 710R15 keeps a more traditional visual presentation. A 6-8 inch recommended rim-width range is associated with these equivalents, but wheel width and vehicle clearance still deserve confirmation before any conversion.

The 1973 International Pickup 1110’s primary fitment is bias-ply, with 700-15, G78-15, and H78-15 all falling into that construction type. Radial-equivalent choices are available for G78-15 and H78-15, so the decision often comes down to whether the goal is to keep the truck in its original-style construction or compare a more modern radial format.

A restoration-oriented truck may favor bias-ply construction for its period presentation, while a driver-focused truck may prompt a closer look at radial equivalents. The important checks are wheel width, the truck’s present stance and clearance, and whether all four tires will be matched in construction rather than mixed without a deliberate plan.

A 700-15 choice for a 1973 International Pickup 1110 starts with confirming that 700-15 is the size already matched to the truck’s wheels. From there, the main variables are sidewall style, tire series, and intended use, since this size is offered in both passenger-style whitewall tires and blackwall truck-oriented designs.

Firestone and BFGoodrich whitewall options suit owners after a traditional look, while STA series such as Traxion, Super Transport, Transport Highway, and Classic Military point toward utility or truck-use character. Rim-width compatibility is also narrower in this size than in some of the alphanumeric options, so wheel measurement remains an important part of the selection process.

The available sidewall styles for 1973 International Pickup 1110 tires are blackwall and wide whitewall. Which styles appear depends on the tire size, with 700-15, G78-15, and H78-15 all offering some form of wide whitewall or blackwall choice across the current product range.

That makes sidewall treatment one of the clearest ways to shape the truck’s finished look. A wide whitewall leans toward a more dressed, period-style appearance, while a blackwall usually suits a work-truck, utility, or more understated restoration theme. The sidewall decision should still come after the correct size and wheel compatibility have been confirmed.

Tires for the 1973 International Pickup 1110 are available from Firestone, BFGoodrich, Coker Classic, and STA. Brand availability varies by size, with 700-15 offering the broadest mix and G78-15 and H78-15 leaning more heavily toward Coker Classic whitewalls and STA truck-oriented blackwall choices.

The brand name is only one part of the buying decision. It helps to compare the tire series, sidewall style, construction, load figures where shown, and the wheel-width range attached to the size you plan to use. That approach keeps the focus on a tire that suits the truck’s setup and intended character rather than choosing by brand alone.

A period-style 1973 International Pickup 1110 usually starts with one of its primary bias-ply sizes: 700-15, G78-15, or H78-15. From there, the visual direction depends on the truck itself, since available choices include wide whitewall passenger-style tires as well as blackwall truck-oriented tread patterns.

That means the right appearance choice is tied to how the pickup is being restored rather than to one universal answer. Owners pursuing exact historical originality should compare their truck against marque references, period photos, or other vehicle-specific documentation, while owners focused on an authentic era feel can use the correct size and construction as the starting point.

Tire construction has a visible effect on a restored 1973 International Pickup 1110 because the truck’s primary fitment is bias-ply, and bias-ply tires carry the traditional sizing and visual character associated with the period. That makes them a natural choice for owners trying to preserve a more vintage overall presentation.

A radial alternative can still be worth considering, especially in G78-15 or H78-15 equivalent form, but it changes the decision from simple replacement to interpretation. Some owners will prefer the classic stance and look of bias-ply construction, while others may want a bias-look radial to keep more of that traditional appearance while moving to radial construction.

Modifications can absolutely affect tire fitment on a 1973 International Pickup 1110. Even though the truck’s primary sizes are 700-15, G78-15, and H78-15 on 15-inch rims, aftermarket wheels, altered wheel width, suspension changes, ride-height changes, or brake conversions can change what works safely and cleanly on the vehicle.

A modified truck should be checked at the wheel itself rather than selected by catalog size alone. Verifying wheel diameter, wheel width, and available clearance at the fender and steering components is especially important before moving between different primary sizes or stepping from a bias-ply tire into one of the radial-equivalent options.

Before driving a 1973 International Pickup 1110 on new tires, inspect the wheels, valve stems, lug hardware, and overall tire seating first. It also helps to check that all four tires match the intended size and construction, and that inflation is set appropriately for the tire being used.

A short, careful initial drive is useful for confirming that the truck tracks properly and that nothing rubs during turns or suspension movement. Collector and vintage trucks also deserve a look at steering components, worn suspension parts, and brake condition, since fresh tires often reveal issues that older, hardened tires had been masking.

700-15 tires on a collector 1973 International Pickup 1110 should be maintained with regular pressure checks, visual inspections, and careful storage habits. Bias-ply tires on low-use trucks deserve extra attention for sidewall cracking, flat spotting after long periods parked, cuts, bulges, uneven wear, and gradual air loss.

A truck that sits for extended periods benefits from being stored away from strong sunlight, excess moisture, and ozone-producing equipment such as electric motors or welders. Periodic movement, proper inflation, and a close look before each road outing help preserve the tires and make it easier to catch age-related condition issues before they become a driving concern.