International Scout II Tires

International Scout II uses three listed tire sizes across 1976, 1977, 1978, and 1979: 225/75R15, H78-15, and HR78-15. All three sizes are tied to 15-inch wheels. The 225/75R15 is a metric radial, H78-15 is an alphanumeric bias-ply size, and HR78-15 is an alphanumeric radial size, so the choice is not just about dimensions but also about construction and the look you want on the truck.

A practical way to narrow the choice is to start with the wheel diameter, then compare the tire type already on the vehicle and the overall character of the build. A restored, period-looking International Scout II may lean toward H78-15 or HR78-15, while a driver-oriented truck may make more sense with 225/75R15. If the truck has changed hands or been modified, inspect the wheels and sidewalls closely rather than assuming the current tires are original-style fitment.

H78-15 is an older alphanumeric bias-ply tire size used on International Scout II from 1976 through 1979. The H indicates the tire’s general width and load class, the 78 identifies the aspect series, and the 15 is the wheel diameter in inches. In the available products for this size, H78-15 is a bias-ply construction on a 15-inch rim, with both wide whitewall and blackwall styles represented.

That matters because H78-15 is not simply an old way of writing 225/75R15. It signals a different tire family with a different construction style and a distinctly period appearance. If your International Scout II is being restored for a more authentic late-1970s look, H78-15 may be the right direction, but you should also verify that the wheel width matches the tire’s stated rim-width range and remember that a tube is required.

A 1978 International Scout II has 225/75R15, H78-15, and HR78-15 listed because the same model year appears with more than one sizing system and more than one construction type. All three use a 15-inch wheel, but H78-15 is bias-ply, while 225/75R15 and HR78-15 are radial sizes. That creates a split driven by construction and sizing convention rather than by a wheel-diameter change.

For a buyer, the key point is to match the tire to the truck’s actual setup and purpose instead of choosing by year alone. If your International Scout II is a restoration, the sidewall style and period feel may matter as much as the nominal size. If it is a driver, the radial options may be more appealing. The year listing gives you the range, but the correct choice comes from checking the existing wheels, intended use, and the look you want to preserve.

International Scout II does require inner tubes when using the H78-15 bias-ply option listed here. That size is an alphanumeric bias-ply construction, and the available products do not indicate tubeless fitment. The radial sizes shown for International Scout II, 225/75R15 and HR78-15, are treated differently because they are radial constructions rather than the bias-ply H78-15 option.

Tube use should always match both the tire construction and the wheel design on the actual truck. If your International Scout II has older wheels, restored wheels, or uncertain service history, inspect the wheel condition carefully before mounting any new tire. Tube-related parts also need to be compatible with the wheel and valve setup, so the smartest approach is to treat tube choice as part of the whole wheel-and-tire package rather than as an afterthought.

International Scout II appears here with both crossply and radial choices. H78-15 is the bias-ply option, while 225/75R15 and HR78-15 are radial options, all on 15-inch rims. That means there is no single universal answer; the right choice depends on whether the truck is being kept close to period presentation or used more regularly on modern roads where many owners prefer radial behavior.

Bias-ply tires suit a more authentic vintage appearance and driving feel, while radials usually appeal to owners who value a more settled ride and easier road manners. The best choice for your International Scout II should match the truck’s mission. A show-focused restoration often points one way, while a weekend driver may point another. Decide that first, then match the size and sidewall style to the look you want on the vehicle.

Radial tires can change how an International Scout II feels on the road because the available radial choices, 225/75R15 and HR78-15, are built differently from the H78-15 bias-ply option. Radials generally track and flex differently than bias-ply tires, so the steering feel, straight-line behavior, and overall road impression can change even when the wheel diameter stays at 15 inches.

For an owner, that means the tire decision affects more than appearance. If your International Scout II is driven regularly, a radial may better suit your expectations, especially if the suspension and steering are already in good order. If the truck is restored for period character, the bias-ply option may feel more appropriate. Either way, make the decision as part of the whole vehicle setup rather than treating the tire as an isolated cosmetic choice.

Mixing crossply and radial tires on an International Scout II is not a good practice. The listed choices include one bias-ply size, H78-15, and two radial sizes, 225/75R15 and HR78-15, but they are built around different carcass behavior and road feel. Even when the wheel diameter is the same, combining construction types can make the truck respond unevenly.

A much better approach is to keep the same construction type at all four corners of the International Scout II. That gives the steering, braking, and overall handling a more consistent foundation and makes the truck easier to evaluate if there are other chassis issues present. If the current tires are mixed because of an old partial replacement, use that as a sign to reassess the complete set and settle on one size family and one construction approach.

A 1977 International Scout II can use 225/75R15, H78-15, or HR78-15, so confirmation starts with the actual wheel and the tire style intended for the truck. All three sizes use a 15-inch rim, but H78-15 is bias-ply while the other two are radial options. That means the correct choice depends on whether the truck is being preserved in a more period-oriented form or set up as a more road-friendly driver.

Check the wheel diameter stamped on the wheel if possible, read the size on any existing tires, and compare the truck’s current stance and appearance to your restoration goal. If the vehicle has had wheels changed over the years, the current tire may reflect a later owner’s preference rather than the direction you want. A thoughtful comparison of wheel width, construction type, and sidewall style will usually narrow the field quickly.

International Scout II tires in the listed sizes are available in several sidewall styles, including wide whitewall, narrow whitewall, and blackwall. The 225/75R15 radial offerings include both wide and narrow whitewalls. H78-15 includes wide whitewall versions as well as a blackwall STA Traxion option, giving International Scout II owners more than one visual direction depending on how the truck is being presented.

Sidewall style has a strong effect on the finished look of an International Scout II, especially on a restoration or a custom build. A whitewall can push the truck toward a more styled, period presentation, while a blackwall usually looks more utilitarian and truck-like. Choose the sidewall with the whole vehicle in mind, including paint, wheel finish, and how closely you want the truck to reflect a factory-era appearance versus a personalized build.

International Scout II tires in the listed sizes are offered by BFGoodrich, Coker Classic, American Classic, Maxxis, Travelstar, and STA. The 225/75R15 radial size has the broadest brand spread, while H78-15 includes Coker Classic and STA products. Brand choice therefore varies somewhat by size, with the radial metric option giving the widest selection within the sizes shown for International Scout II.

Brand matters most after you have settled the size, construction type, and visual style. Once those basics are set, compare the available sidewall presentation, rim-width compatibility, and general character of the tire series rather than choosing by brand name alone. For many International Scout II owners, the right brand is the one that best supports the overall look and driving purpose of the truck within the correct size family.

International Scout II appears with several distinct tire series, including Silvertown Radial, Star Series, American Classic Radial, UN106, Coker Classic Bias Ply, and Traxion. Those series reflect different construction approaches and visual intentions. Some are radial street-style tires with whitewall presentation, while others are bias-ply tires, including a more utilitarian truck-oriented Traxion option in H78-15 blackwall.

The practical takeaway is to choose the series only after deciding whether your International Scout II should wear a radial or bias-ply tire and whether the truck should look more refined or more work-oriented. A radial whitewall series can suit a road-driven restoration or custom presentation, while a bias-ply series can better match a period feel. The series name is useful, but it should support the size and construction decision rather than replace it.

An International Scout II should be stored on a clean, dry surface away from direct sunlight, electric motors, welders, and other ozone sources that accelerate rubber aging. Keep the tires properly inflated for the type fitted, and make sure the vehicle is not carrying unnecessary load during long storage periods. Clean tires and wheels before storage so dirt, oil, and brake residue do not sit against the rubber for months at a time.

For longer inactive periods, rolling the International Scout II occasionally can help avoid flat spotting, especially with bias-ply tires. If the truck will sit for a season or more, some owners also reduce stress by taking weight off the tires with careful support under the chassis. The goal is simple: protect the tires from age, environment, and prolonged distortion so they are still trustworthy when the truck goes back into service.

Tires on an International Scout II should be inspected regularly even if the truck is driven only occasionally. A visual inspection before each outing is a sensible habit, and a closer inspection at least several times a year helps catch weather checking, sidewall cracking, irregular wear, damage around the bead, and signs of age-related hardening. Collector vehicles often age their tires by time and storage conditions rather than by mileage alone.

Regular inspection is especially important on an International Scout II because the truck may carry older-style bias-ply tires, radial whitewalls, or wheels that have seen decades of service. Catching a problem early can also reveal suspension, alignment, or brake issues before they become more expensive. Make tire inspection part of the same routine as checking fluids, lights, and steering components whenever the truck is brought out for driving.

Tires on an International Scout II should be replaced when age, cracking, hardening, structural damage, vibration, or repeated air-loss concerns appear, even if the tread still looks deep. Collector tires often age out before they wear out. A tire can look respectable on the outside and still be a poor road candidate if the casing has deteriorated from time, storage, heat cycles, or long inactivity.

That is why replacement decisions on an International Scout II should consider age and condition at least as seriously as remaining tread depth. If the truck has sat for years, returned from long-term storage, or shows sidewall deterioration, a cautious inspection by someone experienced with collector tires is wise. Waiting for obvious tread wear is often the wrong benchmark on vintage vehicles, especially those used only for occasional drives and events.

International Scout II is associated here with three size types across 1976 to 1979: 225/75R15, H78-15, and HR78-15. That means original-type fitment cannot be reduced to one single tire description for every truck in the model range. The available products include both bias-ply and radial constructions, along with several series and sidewall styles, so more than one period-appropriate direction exists depending on the specific vehicle and how it was configured.

For restoration work, the right move is to compare the truck against factory literature, surviving original examples, and marque-club references before settling on one size family. A highly original International Scout II deserves that extra step because construction type and sidewall appearance affect authenticity as much as the printed size itself. The listed choices provide the correct general range, but the specific truck should guide the final restoration decision.

Correct tire fitment can absolutely affect the value, presentation, and judging outcome of an International Scout II. Size, construction type, sidewall style, and overall stance all influence whether the truck looks appropriately restored for its period. A bias-ply H78-15 presents differently from a radial HR78-15 or 225/75R15, even though all are 15-inch fitments associated with International Scout II in these years.

In practical terms, judges and serious buyers often notice tire details quickly because they shape the vehicle’s posture and visual authenticity. If your International Scout II is being prepared for concours, marque events, or collector resale, tire choice should be made with the same care as paint color, wheel finish, and interior trim. Club guidance and period photos are especially useful when deciding whether a whitewall or blackwall treatment supports the truck’s intended presentation.

Silvertown Radial and Coker Classic Bias Ply represent two different approaches for International Scout II. Silvertown Radial is a radial series offered here in 225/75R15, while Coker Classic Bias Ply appears in H78-15. The difference is not just branding; it reflects a change in construction type, size convention, and likely the overall look and driving character the finished truck will have.

For a restorer or owner, the choice comes down to priorities. A Silvertown Radial can suit an International Scout II that is expected to spend more time on modern roads while still carrying a vintage-style whitewall presentation. Coker Classic Bias Ply is more aligned with a traditional period look and feel. If authenticity is the main goal, compare the tire series to period photos and vehicle history rather than choosing solely by appearance on the screen.

These tires can be suitable for driving an International Scout II on public roads when the tires are the correct size, correctly mounted on compatible 15-inch wheels, properly inflated, and in sound condition. The listed choices include both radial and bias-ply constructions, and each brings different road manners. Safety depends on the complete condition of the tire, wheel, suspension, steering, and braking system rather than on size alone.

For a collector truck, tire condition should always be considered together with the condition of the vehicle itself. Before any meaningful road use, an International Scout II should be checked for age-related deterioration in rubber parts, steering play, brake condition, and wheel integrity. Even the right tire cannot compensate for a neglected chassis, so road safety starts with the whole vehicle being ready for service, not just the tires looking acceptable.

Before driving an International Scout II, check tire pressure, visible sidewall condition, tread condition, valve stems, wheel fasteners, and any signs of leakage or cracking around the bead area. Also look for irregular wear that might point to alignment, steering, or suspension problems. Because International Scout II can wear either radial or bias-ply tires in these sizes, it is important to know which construction is on the truck and whether all four tires match.

That inspection should be part of a broader pre-drive routine that includes brakes, steering response, fluid levels, and lighting. A truck that has been sitting can develop issues even when it was fine the last time it ran. For an International Scout II that sees occasional use, a slow walk-around before each drive is one of the simplest and most valuable habits for avoiding trouble once the vehicle is back on the road.

Appropriate speed for an International Scout II on original-type tires depends heavily on the construction fitted and the overall mechanical condition of the truck. A radial International Scout II tire and a bias-ply International Scout II tire do not behave the same way, even when both fit 15-inch wheels. Older trucks should always be driven within the limits of their tires, suspension, brakes, and steering rather than according to modern traffic expectations.

The practical rule is to build speed gradually and keep the truck in the range where it feels composed and fully controllable. If your International Scout II is on bias-ply tires, a more conservative pace is wise, particularly on crowned roads, grooved pavement, or in crosswinds. Whatever the tire type, high-speed driving should never be the assumption with a collector 4x4 unless the entire vehicle has been inspected and prepared for that kind of use.