The 1974 Audi 100 came from an era when Audi was building a reputation for clean engineering, restrained European styling, and efficient midsize sedans that felt distinctly different from many domestic offerings. For owners today, that character carries straight into tire choice, because this model can be fitted with either a 165R14 radial or a 560-14 bias-ply on a 14-inch rim, depending on the version and the direction of the car. Available choices range from blackwall European-style radials to blackwall, narrow whitewall, and wide whitewall bias-ply designs. The right selection depends on sub-model, wheel setup, road use, and whether the goal is traditional presentation or a more modern radial-driving feel.
Which Tire Size Is Right for The 1974 Audi 100
The 1974 Audi 100 uses two primary tire sizes, both on 14-inch rims, and the correct choice depends first on the exact sub-model. A 165R14 radial applies across the range, while 560-14 is a bias-ply fitment used on Base and GL models. That makes the main decision less about rim diameter and more about confirming the car's configuration, then deciding whether period-style bias-ply appearance or radial construction better matches the intended use.
165R14 is a Euro-metric radial size in which 165 refers to the nominal section width in millimeters, R identifies radial construction, and 14 is the wheel diameter in inches. On the 1974 Audi 100, this size aligns naturally with the car's European design and is the shared fitment across all covered sub-models. Available choices include blackwall tires from Pirelli, Michelin, and Vredestein in series such as Cinturato CA67, XAS, and Sprint Classic. It is the size to focus on when retaining a classic European radial look and confirming compatibility with the wheel width already on the car.
560-14 is a numeric bias-ply size, with 5.60 representing the nominal section width in inches and 14 identifying the rim diameter. On the 1974 Audi 100, this size applies to Base and GL configurations and points toward a more traditional construction choice than the radial alternative. The available BFGoodrich selections stay within the Silvertown Classic Bias Ply series and vary mainly by sidewall treatment, including blackwall, narrow whitewall, and wide whitewall. This size deserves close attention when the goal is a restoration-oriented appearance and a bias-ply presentation on the proper wheel width.
Sub-model fitment matters on the 1974 Audi 100 because not every version uses the same construction choices. The LS stays with the 165R14 radial, while Base and GL models can use either the radial or the 560-14 bias-ply, so confirming the exact trim helps narrow the right direction quickly.
1
1974 Audi 100 Base & GL
The 1974 Audi 100 Base & GL can be fitted with either the 165R14 radial or the 560-14 bias-ply, which gives these cars the broadest tire-selection path. That opens a choice between a more European radial presentation and a more traditional bias-ply look, while keeping wheel width and intended appearance in focus.
The 1974 Audi 100 LS uses the 165R14 radial rather than sharing the bias-ply alternative offered on other covered trims. Tire selection here centers on choosing among the available blackwall radial series and confirming that the existing wheel width suits the specific tire being considered.
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 1974 Audi 100 Tires for Sale
Available 1974 Audi 100 tires span two distinct directions: 165R14 blackwall radials from Pirelli, Michelin, and Vredestein, and 560-14 BFGoodrich bias-ply tires in blackwall, narrow whitewall, and wide whitewall form. The product grid is where construction, series, sidewall treatment, and wheel-width compatibility become easier to compare.
Owners researching 1974 Audi 100 tires usually need clarity on size by sub-model, 14-inch rim fitment, bias-ply versus radial construction, and how sidewall style and tire series affect the finished look and road-going setup.
Tire Size & Fitment
What tire size fits a 1974 Audi 100?
The 1974 Audi 100 uses either a 165R14 radial or a 560-14 bias-ply tire, depending on the sub-model and tire setup. Base and GL versions can use either of those primary sizes, while the LS uses 165R14 radial fitment. Both sizes are built around a 14-inch wheel, but they represent different sizing systems and different construction types.
The practical first step is confirming whether the car is a Base, GL, or LS and then checking which wheels are actually on it today. Many surviving cars have been changed over the years, so the correct choice comes from matching the tire size, wheel width, and intended appearance rather than assuming every 1974 Audi 100 uses the same setup.
What size rim does a 1974 Audi 100 use?
The tire fitments used on the 1974 Audi 100 are built around a 14-inch rim diameter. That applies to both the 165R14 radial and the 560-14 bias-ply sizes. Even though the sizing systems are different, the final number in each size points to the same wheel diameter for this car.
Rim diameter is only part of the fitment picture, so it helps to verify wheel width before choosing between the available tires. The radial and bias-ply options do not share the same width requirements, and an Audi 100 that has had replacement wheels installed may need closer checking before moving from one construction type to the other.
Do all 1974 Audi 100 sub-models use the same tire size?
No. The 1974 Audi 100 LS uses the 165R14 radial, while the Base and GL can use either 165R14 radial or 560-14 bias-ply tires. That means fitment across the model range is related to sub-model, not just year and model name alone. The shared 14-inch rim diameter does not make every tire choice the same.
That difference matters because the buyer decision changes with the trim level. On an LS, the focus stays on selecting the right 165R14 radial product, while Base and GL owners may also be weighing a more traditional bias-ply appearance. Looking at the actual wheel and the car's current stance helps avoid selecting a tire that suits another version better than the one being serviced.
Bias-Ply & Radial Options
Is 560-14 a bias-ply or radial tire for the 1974 Audi 100?
560-14 is a bias-ply tire size on the 1974 Audi 100. It applies to Base and GL configurations and uses a vintage numeric sizing format rather than the Euro-metric radial format used by 165R14. Within this fitment, the available 560-14 choices stay in bias-ply construction and differ mainly by sidewall treatment rather than by a switch to radial design.
That makes 560-14 the more traditional-looking option for owners who want an older-style tire presentation. Bias-ply selection also requires attention to wheel width, because the available 560-14 products are intended for narrower rims than the 165R14 radial choices. Checking the actual wheel before ordering is especially important on cars that may have been updated long after new.
Should I use bias-ply or radial tires on a 1974 Audi 100?
That depends on the sub-model and the goal for the car. A 165R14 radial is appropriate across the covered range and is the only fitment used on the 1974 Audi 100 LS, while Base and GL models can also use the 560-14 bias-ply size. The decision is less about one construction being universally right and more about matching the tire to the intended look and wheel setup.
A radial choice keeps the car in a classic European-style format, while a bias-ply choice moves the appearance toward a more traditional presentation. Before changing constructions, compare the existing wheel width and make sure clearance, stance, and overall setup still make sense for the tire being considered. That is especially useful on collector cars that may not still wear their original wheel arrangement.
Is 165R14 a bias-ply or radial tire for the 1974 Audi 100?
165R14 is a radial tire size for the 1974 Audi 100. The R in the size identifies radial construction, and this fitment appears across all covered sub-models, including the LS. It uses a Euro-metric sizing format that suits the car's European character and is offered in blackwall form from several vintage and classic tire brands.
For most buyers, the real question within 165R14 is not construction but which radial product best suits the car. Wheel width remains worth checking because the available tires do not all share the same published rim-width guidance. That matters even more if the Audi 100 has replacement wheels, since a tire can be the right size on paper yet still deserve a closer compatibility check.
Choosing the Right Tire
What should I consider when choosing a 165R14 tire for a 1974 Audi 100?
Choosing a 165R14 tire for a 1974 Audi 100 starts with confirming that the car uses the radial fitment and still has a suitable 14-inch wheel. From there, the main differences are brand, tire series, and wheel-width compatibility. Pirelli, Michelin, and Vredestein each offer blackwall radial options in this size, but they are not identical in published specifications.
A buyer comparing 165R14 products should look at the intended use of the car, the type of visual presentation desired, and any wheel-width guidance attached to the individual tire. Product weight and load information can also help refine the choice without turning the decision into guesswork. That approach keeps the selection grounded in the actual setup rather than the size code alone.
What sidewall styles are available for 1974 Audi 100 tires?
Sidewall choice on the 1974 Audi 100 depends on which tire size and construction you are considering. The 165R14 radial options are offered in blackwall form, while the 560-14 bias-ply choices are available as blackwall, narrow whitewall, and wide whitewall versions. That means appearance changes noticeably once the selection moves from radial to bias-ply sizing.
The right sidewall style comes down to how traditional or understated the finished car should look. A blackwall radial keeps the presentation clean and European, while the whitewall bias-ply options create a more vintage visual statement. It helps to choose the sidewall after confirming the correct size and wheel, since style should refine the fitment decision rather than replace it.
What brands offer tires for the 1974 Audi 100?
The 1974 Audi 100 has tire options from Pirelli, Michelin, Vredestein, and BFGoodrich. Pirelli, Michelin, and Vredestein cover the 165R14 radial fitment, while BFGoodrich supplies the 560-14 bias-ply choices. That gives the Audi 100 a split product landscape, with European-style radial offerings on one side and traditional bias-ply presentation on the other.
Brand choice matters most after the correct size and construction have already been settled. The useful comparison points are tire series, sidewall style, and wheel-width suitability rather than assuming one brand answers every need. A buyer restoring a Base or GL may compare brands differently than an LS owner focused only on 165R14 radial choices, even though the car still shares the same model name.
Restoration & Appearance
Which tire should I choose for a period-style 1974 Audi 100?
A period-style 1974 Audi 100 usually starts with choosing the tire size and construction that suit the specific sub-model and the look being pursued. The 165R14 radial keeps the car in a classic European sizing format, while Base and GL models also allow a 560-14 bias-ply route for a more traditional presentation. Both can support a restoration-oriented result, but they do so in different ways.
The best visual match depends on whether the car is being preserved as a restrained European sedan or styled with a stronger vintage bias-ply appearance. Exact originality questions should be checked against marque references, photos, or vehicle-specific historical documentation. That is especially worthwhile when the goal is to match a certain market version or era-specific look rather than simply use a correct-size tire.
How does tire construction affect the appearance of a restored 1974 Audi 100?
Tire construction changes the visual character of a restored 1974 Audi 100 more than many owners expect. A 165R14 radial gives the car a classic European road-car look, especially in blackwall form, while a 560-14 bias-ply can shift the presentation toward a more traditional vintage style. On Base and GL models, that construction choice is part of the finished appearance, not just a technical detail.
Sidewall treatment adds another layer to that decision. The available 560-14 bias-ply tires can be blackwall, narrow whitewall, or wide whitewall, so the car's stance and visual tone can change considerably within the same basic size. Choosing construction and sidewall together usually creates a more coherent restoration result than deciding on style first and trying to force the fitment afterward.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1974 Audi 100?
Yes, modifications can affect tire fitment on a 1974 Audi 100 even when the tire size itself is correct for the model range. Changes such as aftermarket wheels, different wheel widths, altered offsets, suspension lowering, or bodywork repairs can all influence how a 165R14 or 560-14 tire sits on the car. That matters because both sizes share a 14-inch diameter but not the same construction or wheel-width expectations.
A car that has been changed over the years should be measured and inspected before selecting tires by catalog fitment alone. Steering clearance, fender room, and the actual wheel dimensions deserve attention, especially when moving between radial and bias-ply setups. A quick check of the car as it sits today often prevents appearance and clearance problems that are easy to miss during online research.
What should I inspect before driving a 1974 Audi 100 on new tires?
Before driving a 1974 Audi 100 on new tires, inspect the wheels, valve stems, and overall wheel condition, then confirm that the tires are mounted in the correct size for the sub-model and wheel setup. It also helps to look over the suspension and steering for looseness or wear, since an older car can mask those issues until fresh tires make them more noticeable.
A short initial drive should include checks for rubbing, unusual pull, vibration, and air loss after the tires have settled. Collector vehicles that sit for long periods also benefit from a fresh pressure check before regular road use. Catching those details early is especially worthwhile on an Audi 100 that may have gone through wheel changes, long storage, or partial restoration work.
How should 165R14 and 560-14 tires on a collector 1974 Audi 100 be maintained?
Collector-car tire care for a 1974 Audi 100 starts with regular pressure checks, visual inspections, and keeping an eye on age-related condition rather than tread depth alone. Both 165R14 radials and 560-14 bias-ply tires should be inspected for cracking, bulges, cuts, and signs of air loss, especially if the car is driven infrequently or spends long periods in storage.
Storage conditions matter just as much as road mileage on an older Audi. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires between drives. It is also smart to inspect the wheels themselves during routine maintenance, because a sound tire can still be compromised by an old rim, poor sealing surface, or neglected valve hardware.