1973 Pontiac LeMans Tires

The 1973 Pontiac LeMans uses three primary tire sizes: G70-14, G78-14, and H78-14. All three are bias-ply sizes for 14-inch wheels. The Base model uses G70-14 or G78-14, while the Safari Wagon uses H78-14, so the exact size depends on the sub-model and the wheel setup on the car.

That means the first step is confirming whether the car is a Base model or a Safari Wagon, then checking the current wheel diameter before selecting a replacement. On older cars, wheels may have been changed over time, so matching the tire to the actual wheel and vehicle configuration matters more than assuming every 1973 LeMans uses the same size.

The primary LeMans tire sizes for 1973 all use a 14-inch rim diameter. G70-14, G78-14, and H78-14 are all built around that same wheel diameter, even though they differ in section and profile family. Rim diameter is consistent across the covered sub-models, so the size decision is not a switch between 14-inch and 15-inch fitment.

That consistency simplifies tire shopping, but it does not remove the need to verify the actual wheels on the car. A LeMans that has received aftermarket wheels or a later wheel swap may no longer be on the original diameter or width, and that can affect both primary bias-ply fitment and any radial-equivalent option under consideration.

No. The 1973 Pontiac LeMans Base uses G70-14 or G78-14, while the 1973 Pontiac LeMans Safari Wagon uses H78-14. All are 14-inch bias-ply sizes, but they are not interchangeable as a single across-the-board fitment for every LeMans configuration covered here.

That difference matters because it changes both the replacement choices and the radial-equivalent sizes worth comparing. Before focusing on sidewall style or brand, identify the exact sub-model and confirm the current wheels. That helps keep a Base car from being matched to wagon-sized replacements, or a wagon from being narrowed down to Base-model tire choices.

G70-14 is a bias-ply tire size on the 1973 Pontiac LeMans. It uses the vintage alphanumeric bias-ply sizing system rather than a modern radial format, and it is one of the primary 14-inch fitments associated with the LeMans Base model.

That matters because a buyer choosing G70-14 can stay with the traditional construction and period-style appearance, or compare it with one of the radial-equivalent alternatives. Either way, the wheel diameter, wheel width, and overall clearance should be checked on the actual car, especially if it has seen wheel changes or suspension work over the years.

Radial equivalents for G70-14 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. Those options keep the same basic 14-inch wheel diameter while offering several modern sizing conventions for comparison.

Each equivalent should be treated as an alternative rather than an automatic substitution. The recommended rim-width range associated with these equivalents is 5 to 7 inches, but overall fit still depends on the actual wheel, the car's clearance, and the intended look. The bias-look radial is especially useful for buyers who want radial construction without moving too far from a traditional visual presentation.

Start by matching the radial equivalent to the LeMans tire size already on the car. G70-14 and G78-14 compare with 205R14, P215/75R14, P225/70R14, and 800R14, while H78-14 compares with 215R14, P225/75R14, and P235/70R14. All of those alternatives remain in 14-inch fitment, but they represent different modern sizing approaches.

Wheel width should be confirmed first, especially since the recommended rim-width range for the equivalents is 5 to 7 inches. It is also smart to inspect steering clearance, fender clearance, and suspension condition before making the change. On a collector car, that extra check helps avoid choosing a radial size that looks or fits differently than expected.

The first consideration is making sure G70-14 is the right primary size for the specific 1973 Pontiac LeMans in front of you, since the Base model may also use G78-14 and the Safari Wagon uses H78-14. Once size is confirmed, G70-14 choices vary by brand, tire series, sidewall treatment, and rim-width specification.

This size is available from Firestone and Goodyear in period-style bias-ply offerings, including redline, raised white letter, blackwall, and pin white stripe presentations. That means the decision is often about the look the car should carry and how the wheel setup is configured. Matching the tire's rim-width range to the wheel already on the car is just as important as choosing the right sidewall style.

Sidewall choices for 1973 Pontiac LeMans tires include redline, raised white letter, blackwall, pin white stripe, dual white stripe, narrow whitewall, and wide whitewall. The available styles vary by tire size, so the Base model's G70-14 and G78-14 options do not present the same visual choices as the Safari Wagon's H78-14 fitment.

That makes sidewall selection part fitment question and part appearance question. A buyer chasing a sportier early-1970s look may focus on redline or raised white letter options in G70-14, while a more formal or wagon-oriented presentation may lead toward whitewall choices in G78-14 or H78-14. Choosing after the correct size is confirmed keeps the visual preference from overriding basic fitment.

Tires for the 1973 Pontiac LeMans are available from Firestone, Goodyear, BFGoodrich, and Coker Classic across the applicable bias-ply sizes. The available series include Firestone Wide Oval, Goodyear Custom Wide Tread, Silvertown Classic Bias Ply, and Coker Classic Bias Ply, depending on which LeMans size is being replaced.

Brand choice should follow size and intended appearance rather than the other way around. Some options emphasize muscle-era sidewall styles such as redline or raised white letter, while others lean toward whitewall presentations. Comparing the size, sidewall treatment, and wheel-width compatibility together gives a more useful basis for selection than choosing by brand name alone.

A period-style 1973 Pontiac LeMans tire choice starts with the correct primary size for the sub-model: G70-14 or G78-14 for the Base model, and H78-14 for the Safari Wagon. From there, the most suitable option depends on the look being recreated, since the available bias-ply products range from sporty redline and raised white letter styles to more traditional whitewall treatments.

That approach keeps the tire aligned with the car's overall character instead of forcing one appearance theme onto every LeMans. Buyers seeking exact historical authenticity should compare their car's documentation and marque-specific references before deciding on a sidewall style. The right size and construction provide the foundation, while the sidewall treatment shapes the final presentation.

On a restored 1973 Pontiac LeMans, staying with a bias-ply tire preserves the original alphanumeric sizing format and the traditional sidewall profile associated with the car's era. That is especially noticeable in sizes like G70-14, G78-14, and H78-14, where sidewall style plays a major role in the finished look.

A radial equivalent can still be worth considering, but it may change the visual character depending on the sizing format selected. An 80-series metric radial tends to read differently than a 70-series P-metric radial, and a bias-look radial serves a different purpose again. Construction choice is not only about road manners; it also influences stance, proportions, and how restoration-oriented the car appears.

Yes. A 1973 Pontiac LeMans may no longer have its original wheels, ride height, or suspension setup, and any of those changes can affect tire fitment. Even though the primary sizes here are all 14-inch fitments, wheel width, offset, steering travel, and body clearance can still change what works comfortably on the car.

That is especially important when comparing radial-equivalent sizes or moving between different visual styles within the same nominal fitment family. A LeMans with aftermarket wheels or altered springs deserves a careful clearance check at full steering lock and normal ride height. Tire selection should follow the actual vehicle setup, not only the original year-make-model specification.

Before road use, inspect the wheel condition, verify the wheel diameter and width, and make sure the new tires are mounted in the correct size for the specific 1973 Pontiac LeMans sub-model. It is also wise to confirm inflation, look over valve stems, and check that the tires clear fenders and suspension components through normal steering movement.

A collector-era car also deserves a quick review of the rest of the running gear before a longer drive. Worn suspension parts, loose steering components, or brake issues can affect how a fresh set of tires performs and feels. Starting with a sound wheel and chassis setup helps the new tires do their job without introducing avoidable fitment or drivability concerns.

1973 Pontiac LeMans tires should be checked regularly for pressure, tread wear, cracking, cuts, bulges, and signs of air loss, especially if the car is driven infrequently. Bias-ply collector tires often spend long periods parked, so visible condition matters just as much as tread depth when deciding whether the car is ready for road use.

Storage habits matter too. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources can help preserve the tires between drives. Periodic inspections are also a good time to verify that the wheel and tire combination still matches the car's current setup, particularly if suspension components or wheels have been changed since the last installation.