1978 Ford 500/Squire Tires

The 1978 Ford 500/Squire uses G78-14, H78-14, and HR78-14, depending on the sub-model. The w/302 & 351 Eng. version can use G78-14 bias-ply, H78-14 bias-ply, or HR78-14 radial, while the w/400 & 460 Eng. version uses H78-14 bias-ply or HR78-14 radial.

That means the correct starting point is not just the year and model name, but the wagon's exact engine-based configuration. Since all of these sizes are mounted on 14-inch rims, the more important fitment questions are which sub-model you have, whether the current wheels are original in size, and whether you want to stay with a bias-ply presentation or evaluate a radial-format alternative.

The tire sizes used on the 1978 Ford 500/Squire all share a 14-inch rim diameter. That applies to G78-14, H78-14, and HR78-14, so the wheel diameter stays consistent even though the wagon can use more than one primary tire size.

Rim diameter is only part of the fitment picture on a large vintage wagon like this. Wheel width still matters, especially when comparing bias-ply tires with radial equivalents, and any aftermarket wheel change should be measured rather than assumed. A 14-inch wheel can still be the wrong choice if its width or overall setup does not match the tire being considered.

No. The 1978 Ford 500/Squire sub-models do not all share the same tire-size choices. The w/302 & 351 Eng. version has G78-14, H78-14, and HR78-14 available, while the w/400 & 460 Eng. version uses H78-14 and HR78-14.

That difference matters because it changes the range of period-style and radial-format options that make sense for the wagon. Someone shopping by model name alone could easily overlook the G78-14 fitment that applies only to certain versions. Checking the exact sub-model first helps narrow the search correctly before comparing sidewall style, construction, and wheel compatibility.

G78-14 is a bias-ply tire size for the 1978 Ford 500/Squire. It uses the vintage alphanumeric bias-ply format and appears on the w/302 & 351 Eng. version of the wagon as one of the traditional 14-inch fitment choices.

That matters because a bias-ply tire affects both appearance and selection strategy. Buyers looking for a period-style presentation may want to stay in G78-14, especially since it is offered with several whitewall treatments. Owners considering a radial instead should compare one of the recognized radial equivalents carefully against wheel width, overall vehicle setup, and clearance rather than assuming every 14-inch option behaves the same.

For G78-14, radial equivalents include 205R14 as an 80-series metric radial, P215/75R14 as a 75-series P-metric radial, P225/70R14 as a 70-series P-metric radial, and 800R14 as a bias-look radial. For H78-14, radial equivalents include 215R14, P225/75R14, and P235/70R14.

Those options give the 1978 Ford 500/Squire owner several ways to move from a vintage bias-ply size into a radial-format alternative. The difference is not just construction, but also sizing convention and profile family. A 5-7 inch rim-width range is associated with both primary bias-ply sizes, and any equivalent should still be checked against the wagon's actual wheels and available clearance.

A bias-look radial equivalent is available for the G78-14 fitment on a 1978 Ford 500/Squire, and that size is 800R14. It is a radial-format alternative intended to retain more of the traditional visual character associated with an older tire presentation.

This can be a useful middle ground for a wagon that is being restored with a vintage appearance in mind but is also being considered for radial construction. It should still be treated as an alternative rather than an automatic swap. Wheel width, actual wheel condition, and clearance around the body and suspension deserve the same careful check they would with any other radial-equivalent conversion.

Start with the exact sub-model, because the 1978 Ford 500/Squire does not use one universal tire size. From there, decide whether the goal is a traditional bias-ply look in G78-14 or H78-14, or a radial-format setup in HR78-14 or one of the recognized radial equivalents tied to the bias-ply sizes.

Once size and construction are narrowed down, compare sidewall style, tire series, and wheel compatibility. A wagon aimed at restoration display may lead toward a period-style whitewall bias-ply, while a driver-focused setup may steer attention toward radial options. The final choice should also respect the existing wheel dimensions and the way the vehicle will actually be used.

Available sidewall styles for the 1978 Ford 500/Squire include dual white stripe, narrow whitewall, and wide whitewall. Those choices appear within the applicable G78-14 and H78-14 bias-ply offerings, giving the wagon owner room to tailor the tire's appearance without changing the basic vintage sizing format.

Sidewall style can have a strong effect on how a full-size late-1970s wagon presents visually, especially on a Squire with a restoration-oriented theme. The main thing is to choose the correct size first and treat the sidewall treatment as the appearance decision that follows. A whitewall style that looks right on the car still needs to be paired with the correct fitment and wheel setup.

BFGoodrich and Coker Classic both offer applicable tires for the 1978 Ford 500/Squire. In G78-14, the available choices include BFGoodrich products in the Silvertown Classic Bias Ply series and Coker Classic products in the Coker Classic Bias Ply series, while H78-14 availability centers on Coker Classic Bias Ply.

Brand alone should not be the only deciding factor. It makes more sense to compare which brand offers the right size, the sidewall treatment you want, and a rim-width specification that matches the wagon's wheels. On this application, the practical choice often comes down to the combination of appearance and fitment rather than simply choosing by name.

A period-style 1978 Ford 500/Squire usually points toward the original-format bias-ply sizes used on the wagon's specific sub-model, such as G78-14 or H78-14. Those sizes preserve the vintage alphanumeric presentation and are available with traditional whitewall treatments that suit a full-size late-1970s wagon.

The right choice depends on whether the goal is a restoration-oriented look, regular driving, or a blend of both. Sidewall treatment can significantly change the car's visual character, so it is worth comparing narrow whitewall, dual white stripe, and wide whitewall options carefully. When exact originality matters, marque-specific references are the best way to confirm the most appropriate appearance details.

Tire construction changes more than ride character on a restored 1978 Ford 500/Squire; it also changes how the wagon looks at a glance. A bias-ply tire in G78-14 or H78-14 keeps the traditional vintage size format, while a radial alternative introduces a different visual presentation even when it is chosen as an equivalent.

For many restorations, that visual difference matters just as much as the sidewall style. A wide whitewall bias-ply can create a distinctly traditional look, while a radial may suit a wagon being built for more regular road use. The best decision usually comes from balancing authenticity goals, the wheel setup already on the car, and how closely the finished appearance needs to reflect period practice.

Yes. Modifications can change tire fitment on a 1978 Ford 500/Squire even when the tire size itself is correct for the model. Aftermarket wheels, changes in wheel width, altered ride height, suspension work, or body modifications can all affect how a G78-14, H78-14, HR78-14, or a radial equivalent sits in the car.

That is especially important on a large vintage wagon, where many cars have seen wheel swaps or suspension updates over the years. Before choosing a tire, check the actual wheel diameter and width already on the car, then inspect steering and fender clearance at full turn and under load. Small setup differences can matter as much as the nominal tire size.

Before driving a 1978 Ford 500/Squire on new tires, inspect the wheels for correct size and condition, confirm the tires are properly mounted and inflated, and look over the suspension and steering components. On a collector-era wagon, it is also smart to check for uneven wear patterns, rubbing marks, or signs that the previous tire setup was marginal.

A cautious road test should follow any tire change, especially if the wagon is moving from bias-ply sizing into a radial alternative or returning to service after long storage. Listen for contact during turns, watch for vibration, and recheck pressure after the first few drives. That simple routine helps catch fitment or condition issues before they become larger problems.

Tires on a collector 1978 Ford 500/Squire should be maintained with regular pressure checks, visual inspections, and attention to age-related condition even if the car is driven infrequently. Sidewall cracking, flat spotting, cuts, bulges, and slow air loss deserve prompt attention, because low-mileage vintage cars often spend more time parked than in service.

Storage conditions matter almost as much as mileage. Keeping the wagon away from prolonged sunlight, excessive heat, moisture, and ozone sources can help preserve the tires between drives. It is also wise to inspect the tires before every meaningful outing rather than assuming they are fine because the tread still looks good. Collector cars age tires by time as much as by use.