The 1991 Buick Park Avenue sits firmly in Buick’s full-size comfort-luxury tradition, a front-drive sedan aimed at quiet highway travel and understated presence rather than flashy performance. That character makes tire choice especially important, because the right fitment affects both the car’s stance and the smooth road manners owners expect. Most 1991 Buick Park Avenue models use 205/70R15 radial tires, while the Park Avenue with Gran Touring Pkg. uses 215/65R15 on the same 15-inch rim diameter. Available choices range from blackwall and whitewall styles to touring and more performance-flavored radial lines, so the decision often comes down to matching the tire’s appearance and character to the exact sub-model and intended use.
Which Tire Size Is Right for The 1991 Buick Park Avenue
The 1991 Buick Park Avenue uses two primary tire sizes, and the difference comes down to sub-model rather than a change in basic construction. Both fitments are radial tires for 15-inch wheels, so the first step is confirming whether the car is a Base, an Ultra, or a Park Avenue w/Gran Touring Pkg. Once that is settled, the real choice shifts to tire style, brand, and the kind of road manners or appearance you want from the car.
205/70R15 is a metric radial size in which 205 identifies nominal section width in millimeters, 70 is the aspect ratio, R designates radial construction, and 15 is the wheel diameter in inches. On the 1991 Buick Park Avenue, this is the standard fitment for the Base and Ultra models, making it the core size for buyers keeping the car in its original road-going character. Available options include blackwall, narrow whitewall, and wide whitewall styles from brands such as Maxxis, Michelin, Avon, American Classic, Coker Classic, Dunlop, Tornel, and Travelstar. This size suits owners who want to preserve the Park Avenue’s traditional luxury-sedan balance while still choosing among appearance-focused or more performance-oriented radial designs.
215/65R15 is also a metric radial size, with 215 indicating nominal section width in millimeters, 65 showing the aspect ratio, R marking radial construction, and 15 identifying the wheel diameter. For the 1991 Buick Park Avenue, this size belongs to the Park Avenue w/Gran Touring Pkg., so it should be selected only after confirming that specific configuration. Product choices include OWL, raised white letter, redline, and wide whitewall treatments from Goodyear, Cooper, and BFGoodrich across several tire series. This fitment is the one to evaluate when the car carries the Gran Touring package and the owner wants a tire that matches that package’s more distinct visual and handling-oriented presentation.
Sub-model fitment matters on the 1991 Buick Park Avenue because most versions share one tire size, while the Gran Touring package uses another. Checking the exact sub-model keeps the tire choice aligned with the car’s intended setup before comparing sidewall style, brand, or series.
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1991 Buick Park Avenue Base
The 1991 Buick Park Avenue Base uses the 205/70R15 radial fitment on a 15-inch wheel. That keeps tire selection centered on choosing the right whitewall or blackwall presentation and comparing available radial product lines rather than sorting through multiple primary sizes.
The 1991 Buick Park Avenue Ultra also uses the 205/70R15 radial size. For this sub-model, the main decision is choosing among available brands and sidewall treatments while keeping the tire’s overall look in step with the car’s upscale, full-size character.
The 1991 Buick Park Avenue w/Gran Touring Pkg. uses 215/65R15 radial tires rather than the 205/70R15 size found on the other covered sub-models. That makes sub-model confirmation essential before purchase, especially for owners comparing sporty sidewall treatments such as OWL, raised white letter, or redline.
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 1991 Buick Park Avenue Tires for Sale
Available 1991 Buick Park Avenue tire choices cover both primary sizes and include a broad mix of brands, tire series, and sidewall presentations. Buyers can compare blackwall, narrow whitewall, wide whitewall, OWL, RWL, and redline options depending on whether the goal is a traditional luxury look or a more assertive Gran Touring-style appearance.
Common questions for the 1991 Buick Park Avenue usually come down to the right sub-model tire size, 15-inch wheel fitment, sidewall style, and how to choose among available radial options for restoration-minded use or regular road driving.
Tire Size & Fitment
What tire size fits a 1991 Buick Park Avenue?
The 1991 Buick Park Avenue uses two primary tire sizes: 205/70R15 and 215/65R15. The Base and Ultra models use 205/70R15 radial tires, while the Park Avenue w/Gran Touring Pkg. uses 215/65R15 radial tires.
That means the correct choice starts with identifying the exact sub-model, not just the year and model name. Both sizes mount on 15-inch wheels, but the dimensions are not the same, so the tire should match the car’s original configuration unless wheel, suspension, and clearance have been carefully checked on a modified vehicle.
What size rim does a 1991 Buick Park Avenue use?
Both primary tire sizes used on the 1991 Buick Park Avenue are built for 15-inch rims. That applies to the 205/70R15 fitment used on the Base and Ultra and to the 215/65R15 fitment used on the Park Avenue w/Gran Touring Pkg.
Wheel diameter is only part of the fitment picture, so it still helps to confirm the actual wheel on the car before ordering tires. A Park Avenue may have replacement wheels after decades of service, and wheel width can vary by tire choice, especially when comparing luxury-style whitewalls with sportier blackwall, OWL, or raised white letter options.
Do all 1991 Buick Park Avenue sub-models use the same tire size?
No. The 1991 Buick Park Avenue Base and Ultra share the 205/70R15 radial size, but the 1991 Buick Park Avenue w/Gran Touring Pkg. uses 215/65R15 radial tires. The difference is tied to the sub-model configuration rather than a change in rim diameter.
That makes sub-model verification the first step before comparing brands or sidewall styles. An owner looking at a Gran Touring car should stay focused on 215/65R15 offerings, while Base and Ultra owners should evaluate 205/70R15 choices that match the car’s intended appearance and road-use goals.
Choosing the Right Tire
What should I consider when choosing a 205/70R15 or 215/65R15 tire for a 1991 Buick Park Avenue?
Start with the exact tire size used by the sub-model, since the 1991 Buick Park Avenue does not use one universal fitment across the range. After size, the next factors are radial construction, wheel compatibility, sidewall treatment, tire series, and whether the car is being kept in a traditional luxury presentation or given a more assertive look.
A Base or Ultra owner may lean toward blackwall, narrow whitewall, or wide whitewall choices in 205/70R15, while a Gran Touring package car opens the door to 215/65R15 options such as OWL, RWL, redline, or whitewall. Matching the tire’s appearance and specifications to the wheel and the car’s role usually leads to the best result.
What sidewall styles are available for 1991 Buick Park Avenue tires?
The 1991 Buick Park Avenue has strong sidewall variety across its available tire sizes. Depending on the size and tire series, choices include blackwall, narrow whitewall, wide whitewall, OWL, RWL, and redline, giving the car everything from a traditional luxury look to a sportier 1990s presentation.
That variety matters because sidewall style changes the car’s visual character as much as the wheel itself. Whitewalls tend to suit buyers preserving a more formal Park Avenue look, while OWL, raised white letter, or redline options make more sense for a Gran Touring-themed appearance if the vehicle uses the correct 215/65R15 fitment.
What brands offer tires for the 1991 Buick Park Avenue?
Tires for the 1991 Buick Park Avenue are available from several brands, including Maxxis, Michelin, Avon, American Classic, Coker Classic, Dunlop, Tornel, Travelstar, Goodyear, Cooper, and BFGoodrich. Brand availability depends on the tire size, with the broader group appearing in 205/70R15 and a more focused assortment in 215/65R15.
Brand choice should be considered alongside size, sidewall style, series, and wheel compatibility rather than as a standalone decision. A buyer comparing tires for a Base or Ultra may have different appearance options than someone selecting for a Gran Touring package car, even though both use 15-inch wheels.
Restoration & Appearance
Which tire should I choose for a period-style 1991 Buick Park Avenue?
A period-style 1991 Buick Park Avenue tire choice starts with the correct sub-model size: 205/70R15 for Base and Ultra models, or 215/65R15 for the Park Avenue w/Gran Touring Pkg. From there, the look can be tailored with blackwall, narrow whitewall, wide whitewall, or more performance-themed sidewall treatments depending on the version of the car.
Owners restoring a formal luxury appearance often focus on whitewall options, while a Gran Touring package car may look more at home with OWL, raised white letter, or even redline styling. When exact originality matters, the best approach is to confirm period details through vehicle-specific documentation before choosing a sidewall treatment.
How does tire construction affect the appearance of a restored 1991 Buick Park Avenue?
The primary fitments for the 1991 Buick Park Avenue are radial tires, so construction choice does not revolve around a bias-ply-versus-radial decision in the way it would on an older collector car. Appearance is shaped more by the sidewall treatment and tire series than by switching between fundamentally different primary constructions.
That makes visual selection more straightforward for a restoration-minded owner. A whitewall radial can preserve the Park Avenue’s formal luxury character, while blackwall, OWL, raised white letter, or redline options can shift the tone toward a more contemporary or sport-oriented look, especially on the Gran Touring package fitment.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1991 Buick Park Avenue?
Yes. Even though the 1991 Buick Park Avenue uses 15-inch radial fitments, modifications can change what works on the car in practice. Aftermarket wheels, altered wheel width, changed offset, suspension work, or body and ride-height changes can all affect how a 205/70R15 or 215/65R15 tire sits and clears.
A Park Avenue that has been lowered, fitted with replacement wheels, or repaired with non-original suspension parts should be checked before assuming any tire choice will behave the same as stock. Steering clearance, fender room, and actual wheel dimensions matter just as much as matching the nominal tire size.
What should I inspect before driving a 1991 Buick Park Avenue on new tires?
Before road use, inspect the wheels, valve stems, and overall tire seating, then confirm that the tires match the correct sub-model size. It is also wise to check for suspension wear, uneven ride height, and any signs that the car has wheel or alignment issues that could affect how the new tires wear.
A careful walkaround should also include sidewall condition, tread surface, and air pressure once the tires are installed. On a long-stored Park Avenue, attention to age-related issues elsewhere on the chassis helps as well, since a fresh set of tires cannot compensate for loose front-end parts, poor alignment, or brake problems.
How should tires on a collector-era 1991 Buick Park Avenue be maintained?
Tires on a collector-era 1991 Buick Park Avenue should be kept properly inflated, inspected regularly for cracking, bulges, cuts, and irregular wear, and protected from long periods of heat, sunlight, moisture, and ozone exposure. Cars that are driven infrequently deserve extra attention because tire condition can age out before tread is worn away.
Routine checks matter even more when the car spends much of its life in storage. Short inspections before each drive, occasional pressure checks during the off-season, and a close look at the tread and sidewalls before longer trips help preserve both ride quality and confidence on the road.
