The 1979 Pontiac Grand LeMans came from a period when midsize American cars balanced traditional styling with increasingly modern road manners. For owners today, that means tire choice is less about converting from older construction and more about matching the car’s exact sub-model and wheel setup. The 1979 Pontiac Grand LeMans uses 14-inch radial tire fitments in 185/75R14, 195/75R14, or 205/75R14 depending on configuration. Available choices include narrow whitewall, wide whitewall, and redline styles across several radial series and brands. Getting the right look and fit starts with confirming whether the car is a 6-cylinder or 8-cylinder model and then matching the tire to the intended appearance and road use.
Which Tire Size Is Right for The 1979 Pontiac Grand LeMans
Three radial tire sizes apply to the 1979 Pontiac Grand LeMans, and the right one depends on the exact sub-model. Both the 6-cylinder and 8-cylinder versions use 14-inch rims, but their supported sizes overlap rather than match exactly. The first step is confirming which engine sub-model the car has, then choosing among the available radial options and sidewall treatments within the appropriate size.
185/75R14 is a metric radial size in which 185 identifies the nominal section width in millimeters, 75 is the aspect ratio, R designates radial construction, and 14 is the rim diameter in inches. On the 1979 Pontiac Grand LeMans, this size is part of the 6-cylinder fitment range and keeps the car in a fully radial setup. Available choices center on narrow whitewall styling from brands such as Tornel, Maxxis, and Travelstar across series like Tornel Classic, Classic Whitewall MA-1, and UN106. It is a useful size to evaluate when maintaining a modest, traditional 14-inch presentation on the correct sub-model.
195/75R14 uses the same metric radial format, with a 195-millimeter nominal section width, a 75-series profile, radial construction, and a 14-inch rim diameter. This size spans both 6-cylinder and 8-cylinder 1979 Pontiac Grand LeMans applications, making it the shared fitment point within the range. Product choices include both narrow whitewall and wide whitewall designs from Coker Classic, Tornel, Maxxis, and Travelstar, with series such as Star Series, Coker Classic Radial, Tornel Classic, Classic Whitewall MA-1, and UN106. For many owners, this size becomes the key comparison point when balancing broad sub-model compatibility with appearance preference.
205/75R14 is a metric radial size with a 205-millimeter nominal section width, a 75-series profile, radial construction, and fitment on a 14-inch rim. On the 1979 Pontiac Grand LeMans, it belongs to the 8-cylinder fitment range and offers the broadest assortment of available product choices. Sidewall options include narrow whitewall, wide whitewall, and redline treatments from brands such as American Classic, Coker Classic, Maxxis, BFGoodrich, Tornel, and Travelstar in several radial series. This size deserves a close look when the goal is matching an 8-cylinder car to a particular visual style rather than simply replacing a tire with any 14-inch radial.
Sub-model fitment matters on the 1979 Pontiac Grand LeMans because the covered sizes overlap but do not stay identical across the range. Both versions use 14-inch radial tires, but confirming whether the car is a 6-cylinder or 8-cylinder model narrows the correct size choices before comparing whitewall or redline options.
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1979 Pontiac Grand LeMans 6 Cyl.
The 1979 Pontiac Grand LeMans 6 Cyl. uses radial tire fitments within the smaller end of the size range, sharing 195/75R14 but also allowing 185/75R14. That makes selection more about confirming the tire already on the car, then choosing the sidewall style and product series that suit its appearance and intended driving use.
The 1979 Pontiac Grand LeMans 8 Cyl. uses radial tire fitments that include the shared 195/75R14 size and the larger 205/75R14 option. Tire selection should start with the actual wheel-and-tire combination on the car, then move to choosing among available whitewall or redline styles that match the look you want.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1979 Pontiac Grand LeMans Tires for Sale
Available 14-inch radial choices for the 1979 Pontiac Grand LeMans span Coker Classic, American Classic, BFGoodrich, Maxxis, Tornel, and Travelstar. Depending on size, buyers can compare narrow whitewall, wide whitewall, and redline styles across series such as Star Series, Silvertown Radial, Tornel Classic, and UN106.
Common questions for the 1979 Pontiac Grand LeMans usually center on which of the three 14-inch radial sizes applies, whether fitment changes between 6-cylinder and 8-cylinder cars, and how to choose among whitewall, redline, brand, and road-use considerations.
Tire Size & Fitment
What tire size fits a 1979 Pontiac Grand LeMans?
A 1979 Pontiac Grand LeMans uses one of three 14-inch radial sizes: 185/75R14, 195/75R14, or 205/75R14. The 6-cylinder version uses 185/75R14 or 195/75R14, while the 8-cylinder version uses 195/75R14 or 205/75R14. That makes 195/75R14 the shared size across both covered sub-models.
The practical step is matching the tire to the exact version of the car and to the wheel setup currently on it. Many Grand LeMans cars have seen wheel or tire changes over the years, so checking the existing rim diameter and the size already mounted helps narrow the correct replacement before comparing whitewall, redline, or series choices.
What size rim does a 1979 Pontiac Grand LeMans use?
The covered tire fitments for the 1979 Pontiac Grand LeMans all use a 14-inch rim diameter. That remains true across 185/75R14, 195/75R14, and 205/75R14, so the diameter stays consistent even though the supported tire widths and overall dimensions vary within the lineup.
Rim diameter is only part of the fitment picture, so it helps to confirm wheel width as well before settling on a replacement tire. A car with replacement wheels may still be 14-inch, yet have a different width than expected, which can influence which of the supported tire sizes is the better match for the vehicle’s present setup.
Do all 1979 Pontiac Grand LeMans sub-models use the same tire size?
No. The 1979 Pontiac Grand LeMans 6 Cyl. uses 185/75R14 or 195/75R14, while the 1979 Pontiac Grand LeMans 8 Cyl. uses 195/75R14 or 205/75R14. Both versions share 195/75R14, but the smallest and largest sizes are tied to different sub-model ranges.
That overlap is important because two cars wearing 14-inch tires can still need different replacement sizes. The most reliable approach is to confirm the sub-model first, then inspect the actual tire size and wheel combination currently on the car. That avoids choosing a tire simply because it looks close or because another Grand LeMans owner uses it.
Choosing the Right Tire
What should I consider when choosing a 195/75R14 tire for a 1979 Pontiac Grand LeMans?
195/75R14 is the shared fitment size across both 6-cylinder and 8-cylinder 1979 Pontiac Grand LeMans applications, so it often becomes the main comparison point. Within that size, choices vary by brand, tire series, sidewall treatment, rim-width specification, load capacity, and product weight rather than by basic construction, since all of the available options are radial.
Selection usually comes down to how the car is used and how it should look. A wide whitewall creates a different presentation than a narrow whitewall, and rim-width compatibility matters if the car no longer has its original wheels. Checking the existing wheel width and deciding on appearance first makes the product grid much easier to narrow.
What sidewall styles are available for 1979 Pontiac Grand LeMans tires?
Sidewall choices for the 1979 Pontiac Grand LeMans include narrow whitewall, wide whitewall, and redline, depending on tire size. Narrow whitewall appears across all three supported sizes, wide whitewall is available in 195/75R14 and 205/75R14, and redline appears in 205/75R14 through the BFGoodrich Silvertown Radial line.
The sidewall decision has a strong effect on the car’s finished look even when the tire size remains correct. Narrow whitewalls lean understated, wide whitewalls give a more formal late-1970s presentation, and redlines create a more performance-oriented visual cue. Matching the sidewall style to the car’s trim, stance, and intended appearance is often as important as choosing the brand.
What brands offer tires for the 1979 Pontiac Grand LeMans?
Tires for the 1979 Pontiac Grand LeMans are available from Tornel, Maxxis, Travelstar, Coker Classic, American Classic, and BFGoodrich. Brand coverage varies by size, with the broadest assortment appearing in 205/75R14, while 185/75R14 and 195/75R14 carry a narrower but still useful mix of radial options and whitewall styles.
Brand name alone should not be the only filter. It helps to compare each tire’s series, sidewall style, rim-width range, and load figure at the stated pressure where that information appears. That approach keeps the decision focused on the actual needs of the car, especially if appearance and wheel compatibility matter as much as simple size replacement.
Restoration & Appearance
Which tire should I choose for a period-style 1979 Pontiac Grand LeMans?
A period-style 1979 Pontiac Grand LeMans tire choice starts with the correct supported size for the car’s sub-model, then moves to sidewall presentation. Since this application is already radial, the visual decision is usually between narrower whitewall styles, broader whitewall treatments, or, in 205/75R14, a redline option rather than between bias-ply and radial construction.
The best appearance depends on how the car is being presented. A formal, restoration-oriented look may lean toward one of the wide whitewall choices, while a subtler street-driven car may suit a narrow whitewall. When exact originality matters, marque references and period vehicle documentation are worth checking before settling on a stripe width or sidewall style.
How does tire construction affect the appearance of a restored 1979 Pontiac Grand LeMans?
On a restored 1979 Pontiac Grand LeMans, construction is straightforward because the supported primary fitments are all radial. That means the visual character comes less from bias-ply-versus-radial shape and more from the chosen metric size, the tire series, and especially the sidewall style, including narrow whitewall, wide whitewall, or redline where available.
Appearance can shift noticeably even when the wheel diameter stays the same. A 195/75R14 with a wide whitewall creates a different impression than a 205/75R14 redline, so the tire should complement the car’s trim level, wheel covers, and overall finish. Careful tire selection helps the car look intentional rather than merely functional after restoration work.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1979 Pontiac Grand LeMans?
Yes. A 1979 Pontiac Grand LeMans may originally fall within the 185/75R14, 195/75R14, or 205/75R14 range, but aftermarket wheels, altered wheel widths, suspension changes, or body modifications can change what works on the car today. Even with the same 14-inch diameter, clearance and wheel-compatibility questions can shift once the original setup has been changed.
That is why the actual car should be checked before choosing a replacement. Measure the wheel diameter, verify the wheel width, and look for steering, inner-fender, and outer-fender clearance through the full range of motion. A Grand LeMans that has been lowered or fitted with different wheels should be treated as a current fitment question, not just a catalog lookup.
What should I inspect before driving a 1979 Pontiac Grand LeMans on new tires?
Before road use, inspect the wheels for damage, confirm the tire size matches the car’s sub-model and rim diameter, and make sure each tire is inflated properly for the tire being used. It also helps to check valve stems, lug hardware, and overall tire seating so the new set starts with a sound foundation.
A collector-era car benefits from a broader once-over before heading out. Look at suspension wear, steering response, brake condition, and any signs of rubbing during turns or compression. After the first few drives, recheck tire pressure and inspect for scuffing or uneven wear, since those early signs often reveal fitment or alignment issues that were not obvious at installation.
How should 195/75R14 tires on a collector 1979 Pontiac Grand LeMans be maintained?
195/75R14 tires on a collector 1979 Pontiac Grand LeMans should be kept at appropriate operating pressure for the tire in use, inspected regularly for cracking, bulges, cuts, tread wear, and air loss, and kept clean during normal storage. Because collector cars may sit for long periods, condition checks matter just as much as accumulated mileage.
Storage habits have a real effect on tire life. Parking away from prolonged sunlight, high heat, standing moisture, and ozone-producing equipment helps preserve sidewalls and overall rubber condition. During the driving season, it is smart to inspect the tires before longer trips and after extended storage so the car returns to the road with predictable, stable behavior.
