The 1985 Pontiac Grand Am sits squarely in the mid-1980s transition from traditional domestic styling to more modern front-wheel-drive packaging, which makes tire choice especially important to both appearance and road manners. Buyers looking at this exact model often need to sort out whether the car is running a standard setup or a sport-suspension configuration before choosing tires. The 1985 Pontiac Grand Am uses radial tire fitments in three sizes: 185/80R13, 205/70R13, and 215/60R14. Available choices range from whitewall and blackwall presentations to raised white letter styling, depending on size. The right pick comes down to confirming wheel diameter and sub-model, then matching the tire to the car's intended look and use.
Which Tire Size Is Right for The 1985 Pontiac Grand Am
Three tire sizes apply to the 1985 Pontiac Grand Am, and the first step is confirming the exact sub-model and wheel diameter. Two of the fitments use 13-inch rims, while one uses a 14-inch rim, so wheel size matters before comparing brands or sidewall style. Once that is settled, the decision becomes choosing the tire that matches the car's configuration, visual character, and intended road use.
185/80R13 is a metric radial size in which 185 identifies nominal section width in millimeters, 80 is the aspect ratio, R denotes radial construction, and 13 is the rim diameter in inches. On the 1985 Pontiac Grand Am, it represents a taller-profile 13-inch radial fitment with a distinctly period passenger-car look. Available choices include Maxxis, BFGoodrich Silvertown Radial, and Coker Classic Star Series options, with narrow whitewall and wide whitewall sidewall treatments. This size makes sense when the goal is to keep a softer traditional profile and a more restoration-oriented appearance on a 13-inch wheel setup.
Fit(s): Base, LE, LE w/Sport Suspension, and w/Sport Suspension
Construction: Radial|Rim: 13 in
205/70R13 is a metric radial size that uses a 205-millimeter nominal width, a 70-series profile, and a 13-inch rim diameter. For the 1985 Pontiac Grand Am, this size is especially important because it is the fitment used on the sport-suspension versions and also appears on other covered configurations. The available product in this size is a Michelin XDX-B blackwall radial, which gives it a more restrained and road-focused presentation than a whitewall or raised white letter tire. This size should be evaluated carefully when the car's suspension package or existing 13-inch wheel setup needs to be matched correctly.
215/60R14 is a metric radial size with a 215-millimeter nominal section width, a lower 60-series profile, and a 14-inch rim diameter. On the 1985 Pontiac Grand Am, it stands apart from the two 13-inch fitments because it requires a different wheel diameter and gives the car a more performance-oriented visual stance. The available choice in this size is a BFGoodrich Radial T/A with raised white letter sidewalls, a look closely associated with 1980s enthusiast styling. This size deserves extra attention when the car has 14-inch wheels and the buyer wants a stronger period sport appearance.
Sub-model fitment matters on the 1985 Pontiac Grand Am because some versions can use multiple sizes while the sport-suspension configurations narrow the choice to one. Identifying the exact trim and confirming whether the car is on 13-inch or 14-inch wheels prevents choosing a tire that suits a different setup.
1
1985 Pontiac Grand Am Base
The 1985 Pontiac Grand Am Base can be associated with all three covered radial tire sizes, so this is a configuration where wheel diameter needs to be confirmed before anything else. Tire selection then becomes a matter of matching the car's actual wheel setup with the preferred sidewall style and overall look.
The 1985 Pontiac Grand Am LE also spans all three listed radial fitments, which means there is no single tire choice without verifying the wheels on the car. Once the rim diameter is confirmed, it is easier to sort between a whitewall-oriented presentation, a blackwall radial, or a raised white letter performance look.
The 1985 Pontiac Grand Am LE w/Sport Suspension uses the 205/70R13 radial size, making fitment more straightforward than on the broader Base and LE listings. That keeps the focus on selecting the right 13-inch radial product and confirming that the car still retains the correct wheel and suspension setup.
The 1985 Pontiac Grand Am w/Sport Suspension uses 205/70R13, so the main fitment question is less about size choice and more about matching the car's existing 13-inch wheel arrangement. Buyers can then concentrate on the available blackwall radial option and overall compatibility with the car's present setup.
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 1985 Pontiac Grand Am Tires for Sale
Available 1985 Pontiac Grand Am tires vary meaningfully by size, brand, tire series, and sidewall treatment. Choices include Maxxis, BFGoodrich, Coker Classic, and Michelin options, with narrow whitewall, wide whitewall, blackwall, and raised white letter styles across the covered 13-inch and 14-inch radial fitments.
Common questions for the 1985 Pontiac Grand Am usually center on which of the three tire sizes applies, how sub-model and wheel diameter affect fitment, and how to choose between whitewall, blackwall, and raised white letter radial options.
Tire Size & Fitment
What tire size fits a 1985 Pontiac Grand Am?
The 1985 Pontiac Grand Am uses three radial tire sizes: 185/80R13, 205/70R13, and 215/60R14. Those sizes do not all apply the same way across every configuration, so the car's exact sub-model and wheel diameter should be confirmed before choosing a replacement tire.
Two of those fitments are built around 13-inch wheels, while 215/60R14 uses a 14-inch rim. Sport-suspension versions use 205/70R13, which makes them more straightforward, but Base and LE applications can overlap multiple sizes. Checking the wheel itself is the quickest way to avoid choosing a tire meant for a different Grand Am setup.
What size rim does a 1985 Pontiac Grand Am use?
A 1985 Pontiac Grand Am can use either a 13-inch or 14-inch rim, depending on the tire size on the car. The 185/80R13 and 205/70R13 fitments use 13-inch rims, while 215/60R14 uses a 14-inch rim.
That difference matters because tire size selection starts with wheel diameter, not sidewall preference or brand. A 13-inch tire cannot be mounted on a 14-inch wheel, and a 14-inch tire cannot be used on a 13-inch wheel. Confirm the stamped wheel size or the size already mounted before narrowing the choice to specific products.
Do all 1985 Pontiac Grand Am sub-models use the same tire size?
No, not all 1985 Pontiac Grand Am sub-models use the same tire size. Base and LE applications can be associated with 185/80R13, 205/70R13, or 215/60R14, while the LE w/Sport Suspension and Grand Am w/Sport Suspension use 205/70R13.
That means a buyer should not assume every 1985 Grand Am takes the same tire just because the model name matches. The sport-suspension cars are the easiest to sort, but Base and LE cars still need wheel confirmation. Verifying both sub-model and actual wheel diameter helps keep the tire choice aligned with the car's current hardware.
Choosing the Right Tire
What should I consider when choosing a 1985 Pontiac Grand Am tire?
Start with the correct tire size for the car's exact sub-model and wheel diameter, since the 1985 Pontiac Grand Am uses 185/80R13, 205/70R13, or 215/60R14. After that, compare the tire's construction, sidewall style, rim-width compatibility, and the overall visual character you want from the car.
A whitewall radial creates a different presentation than a blackwall or raised white letter tire, even when all are appropriate to the era. It also helps to compare load figures where stated and make sure the wheel width suits the tire being considered. Appearance, wheel size, and how the car will actually be driven should work together.
What sidewall styles are available for 1985 Pontiac Grand Am tires?
Sidewall choices for the 1985 Pontiac Grand Am include narrow whitewall, wide whitewall, blackwall, and raised white letter styles, depending on tire size. The 185/80R13 offerings cover the whitewall choices, 205/70R13 is available as a blackwall radial, and 215/60R14 is available with raised white letters.
Those differences affect the car's appearance as much as the tread itself. A whitewall tends to suit a more traditional passenger-car presentation, while blackwall keeps things understated and raised white letters lean into an unmistakably 1980s sport look. Once the correct size is confirmed, sidewall style becomes one of the most visible selection decisions.
What brands offer tires for the 1985 Pontiac Grand Am?
Tires for the 1985 Pontiac Grand Am are available from Maxxis, BFGoodrich, Coker Classic, and Michelin across the covered sizes. Brand choice depends partly on the tire size itself, since not every size has the same number of available products or the same sidewall treatments.
The 185/80R13 fitment has the broadest visible variety, including Maxxis, BFGoodrich Silvertown Radial, and Coker Classic Star Series options. The 205/70R13 fitment is represented by Michelin, while 215/60R14 appears as a BFGoodrich Radial T/A. Picking among them starts with proper size and wheel match, then moves to appearance and product character.
Restoration & Appearance
Which tire should I choose for a period-style 1985 Pontiac Grand Am?
A period-style 1985 Pontiac Grand Am tire starts with the size that matches the car's actual sub-model and wheel diameter, then moves to the visual presentation that best suits the build. Whitewall 185/80R13 radials, a blackwall 205/70R13, and a raised white letter 215/60R14 each create a distinctly different 1980s look.
The most appropriate choice depends on whether the car is being kept in a more standard passenger-car style or given a sportier appearance. Buyers pursuing strict originality should compare the car's current configuration with owner literature, marque references, or other historical sources. For many restorations, matching the era and the wheel setup is the practical goal.
How does tire construction affect the appearance of a restored 1985 Pontiac Grand Am?
Construction is less of a visual dividing line on the 1985 Pontiac Grand Am because its primary fitments are already radial. The bigger appearance differences come from size, profile, wheel diameter, and sidewall treatment, such as whitewall, blackwall, or raised white letters.
A taller-profile 13-inch radial gives a different stance than a lower-profile 14-inch radial, even when both belong to the same era. That is why restoration-minded buyers should look at the car as a complete package instead of focusing on tread design alone. Wheel size, trim level, and the intended presentation all shape which tire looks most at home.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1985 Pontiac Grand Am?
Yes, modifications can affect tire fitment on a 1985 Pontiac Grand Am even when the tire size itself appears correct. Aftermarket wheels, wheel-width changes, altered offset, suspension work, or ride-height changes can all influence how a 185/80R13, 205/70R13, or 215/60R14 sits in the car.
A Grand Am that no longer has its original wheel and suspension setup should be checked for inner clearance, fender clearance, and steering travel before a tire is chosen. Matching the tire to the actual hardware on the car matters more than assuming a catalog size will suit every modified example. That is especially important where 13-inch and 14-inch fitments overlap.
What should I inspect before driving a 1985 Pontiac Grand Am on new tires?
Before driving a 1985 Pontiac Grand Am on new tires, inspect the wheels for correct diameter and condition, check that lug hardware is appropriate, and make sure the tires are mounted in the proper size for the car's setup. It is also wise to verify air pressure, valve stems, and general wheel balance.
A quick mechanical check adds useful peace of mind on an older car. Look over suspension wear items, confirm there is no rubbing at full steering lock, and inspect brake and wheel-bearing condition if the car has been sitting. New tires work best when the surrounding parts are in sound shape and the car tracks properly on the road.
How should tires on a collector 1985 Pontiac Grand Am be maintained?
Tires on a collector 1985 Pontiac Grand Am should be kept properly inflated, inspected regularly for cracking, cuts, bulges, uneven wear, and slow air loss, and stored away from prolonged heat and sunlight when the car is parked for extended periods. Low-use collector cars can age tires out long before tread is worn down.
Maintenance also means looking at the car's use pattern, not just the tire itself. A Grand Am that comes out only for occasional drives should still have its tires checked before each outing, especially after long storage. Clean wheels, stable inflation, and periodic movement help reduce flat spotting and make the car more dependable when it returns to the road.
