The 1991 Audi 100 Quattro came from an era when Audi was building a strong reputation for refined all-weather performance, understated design, and the added confidence of its Quattro all-wheel-drive system. Buyers looking after one today are often balancing originality, road manners, and dependable touring use. This model uses a 195/65R15 radial tire on a 15-inch rim, so the fitment question is straightforward. The real choice centers on selecting the right tire within that size and confirming compatibility if the car has seen wheel or suspension changes over the years. For a well-kept sedan that still sees regular road use, staying focused on exact size and condition matters most.
Which Tire Size Is Right for The 1991 Audi 100 Quattro
The 1991 Audi 100 Quattro uses one primary tire size: 195/65R15, a radial tire for a 15-inch rim. That same fitment carries across the covered sub-model, so the main decision is not which size fits, but which 195/65R15 tire best matches the car's intended use, wheel setup, and overall condition.
195/65R15 is a modern metric radial size in which 195 identifies the nominal section width in millimeters, 65 is the aspect ratio, R denotes radial construction, and 15 is the wheel diameter in inches. On the 1991 Audi 100 Quattro, that format suits the car's period as a refined early-1990s all-wheel-drive sedan designed for regular road use rather than vintage bias-ply fitment decisions. Because the size itself is straightforward, the important next step is confirming that the wheels remain true 15-inch rims and that any replacement tire matches the car's clearance, load needs, and present-day setup.
Fitment is simple for the covered 1991 Audi 100 Quattro sub-model because the same primary tire size is used throughout. Checking the exact sub-model still helps confirm that the car remains on its intended wheel and tire setup before choosing a replacement.
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1991 Audi 100 Quattro Base
The 1991 Audi 100 Quattro Base uses the same 195/65R15 radial fitment as the main model listing. That keeps tire selection focused on choosing the right replacement within that size and verifying that the car has not been altered with different wheels, suspension changes, or non-stock offsets.
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.
Frequently Asked Questions
These FAQs focus on the exact tire size used on the 1991 Audi 100 Quattro, along with rim fitment, tire selection, appearance considerations, and the basic checks that matter before putting a collector-era Audi back on the road.
Tire Size & Fitment
What tire size fits a 1991 Audi 100 Quattro?
The 1991 Audi 100 Quattro uses a 195/65R15 radial tire. That is the primary fitment for this model and it corresponds to a 15-inch wheel diameter, which keeps the sizing question fairly straightforward compared with older vehicles that may have multiple bias-ply or alphanumeric options.
Choosing the right replacement still means verifying the actual wheel on the car before purchasing tires, especially if the Audi has changed hands or has been modified over time. A tire in the correct 195/65R15 size should also be checked against wheel width, suspension condition, and available clearance so the replacement suits the vehicle's present setup.
What size rim does a 1991 Audi 100 Quattro use?
The primary tire fitment for the 1991 Audi 100 Quattro is built for a 15-inch rim. That rim diameter is built into the 195/65R15 size itself, with the final number, 15, indicating the wheel diameter in inches for the tire.
Wheel diameter should be confirmed on the car rather than assumed, particularly on an older sedan that may have aftermarket wheels or replacement factory-style wheels installed at some point. Matching the tire to the correct 15-inch rim is only the first step; wheel width and overall tire clearance should also be reviewed before mounting a new set.
Does the 1991 Audi 100 Quattro Base use the same tire size?
Yes. The 1991 Audi 100 Quattro Base uses the same 195/65R15 radial tire size as the main model fitment. That means there is no separate primary size to sort through for the covered sub-model, which simplifies the selection process.
Even with shared fitment, it is still smart to inspect the wheels currently on the car before replacing tires. A Quattro sedan that has received different wheels, changed ride height, or suspension work may need closer checking for clearance and wheel compatibility, even when the intended replacement remains the original 195/65R15 size.
Choosing the Right Tire
What should I consider when choosing a 195/65R15 tire for a 1991 Audi 100 Quattro?
Start with the exact size, 195/65R15, and confirm that the car still carries the correct 15-inch wheels. Because this Audi uses a straightforward radial fitment, the decision usually comes down to selecting a tire that matches the car's intended use, whether that means regular fair-weather driving, occasional touring, or long-term collector ownership.
A good selection process also includes checking wheel width, overall tire condition on the rest of the car, and any suspension or alignment issues that could affect wear. On a 1991 Audi 100 Quattro, a properly matched tire should support stable road manners without introducing clearance issues from a wheel or chassis setup that may have changed over time.
How do I choose between the available 195/65R15 tires for a 1991 Audi 100 Quattro?
The best way to compare 195/65R15 options for a 1991 Audi 100 Quattro is to begin with fitment, then narrow the choice by intended use and the overall character you want from the car. On a sedan like this, buyers often balance comfort, road-going practicality, and a tire appearance that does not look out of place on an early-1990s Audi.
Once the correct size and wheel diameter are confirmed, compare construction details, load-related specifications where available, and how the tire will be used in real driving. A low-mileage collector car may call for different priorities than a Quattro that still sees regular road time, so matching the tire to the car's role is just as important as matching the size.
What rim-fitment details should I compare when choosing 1991 Audi 100 Quattro tires?
The key rim-fitment detail is the 15-inch wheel diameter required by the 195/65R15 tire size. Beyond that, the buyer should also confirm the actual wheel width and inspect the wheel itself for damage, prior repairs, or aftermarket changes that could affect how a replacement tire seats and operates.
Older vehicles are often running wheels that are not the same as what they left the factory with, even when the tire size appears correct. On a 1991 Audi 100 Quattro, checking wheel condition, width, and offset before mounting tires helps avoid preventable issues with clearance, steering feel, and overall fit once the car is back on the road.
Restoration & Appearance
Which tire should I choose for a period-style 1991 Audi 100 Quattro?
For a period-style 1991 Audi 100 Quattro, the starting point is staying with the correct 195/65R15 radial size on the proper 15-inch rim. That keeps the car visually and proportionally aligned with the way an early-1990s Audi executive sedan is meant to sit, without drifting into obviously mismatched modern fitment.
Appearance choices for a restoration-minded car should still be balanced against safe road use and the actual wheel setup now on the vehicle. If originality is especially important, it helps to compare tire appearance with period photos, marque references, and surviving examples so the finished look suits the car without assuming any modern replacement is historically exact.
Does correct tire fitment matter for a 1991 Audi 100 Quattro restoration?
Yes, correct tire fitment matters because tire size has a direct effect on how a restored 1991 Audi 100 Quattro looks, sits, and drives. Keeping the car on its proper 195/65R15 radial size helps preserve the intended visual balance and avoids the oversized or undersized appearance that can distract from an otherwise well-sorted restoration.
Fitment also matters mechanically, since the wrong size can create unwanted clearance issues or alter the way the car feels on the road. Even on a primarily show-oriented Audi, the tires should be matched to the wheels actually installed and inspected carefully for age, cracking, and general condition before the car is driven any meaningful distance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1991 Audi 100 Quattro?
Yes. Modifications can affect tire fitment on a 1991 Audi 100 Quattro even when the intended tire size remains 195/65R15. Changes such as aftermarket wheels, altered wheel offset, suspension work, or ride-height adjustments can all influence how much space the tire has during steering movement and normal suspension travel.
A car that has been lowered or fitted with non-original wheels deserves a closer inspection before new tires are installed. Checking the wheel diameter, width, and available clearance at the fenders and suspension points helps prevent rubbing or handling issues, and it is especially worthwhile on an older Quattro that may have seen decades of incremental changes.
What should I inspect before driving a 1991 Audi 100 Quattro on new tires?
Before driving a 1991 Audi 100 Quattro on new tires, inspect the wheels for damage, confirm proper inflation, and make sure the tires are mounted in the correct 195/65R15 size. It is also wise to look over the suspension, steering components, and alignment condition so the new tires are not asked to compensate for existing mechanical problems.
A short test drive should be used to check for vibration, pulling, rubbing, or any unusual noise once the tires are installed. Collector-era cars that have been sitting should also be checked for fluid leaks, brake condition, and aged rubber components elsewhere in the chassis, since tire replacement alone does not make the car road-ready.
How should 195/65R15 tires on a collector 1991 Audi 100 Quattro be maintained?
195/65R15 tires on a collector 1991 Audi 100 Quattro should be maintained with regular pressure checks, visual inspections, and attention to age as well as tread depth. A low-mileage car can still develop tire problems from sitting, including sidewall cracking, flat spotting, and slow air loss that may not be obvious until the car is driven.
Storage conditions matter just as much as mileage on a collector sedan. Keeping the Audi away from prolonged sunlight, excess moisture, and ozone sources can help preserve tire condition, while periodic movement and routine inspection make it easier to catch cuts, bulges, or uneven wear before a longer drive puts extra demand on the tires.
