1968 Volkswagen Fastback Tires

A 1968 Volkswagen Fastback uses either 165R15 radial or 600-15 bias-ply tires. Both sizes are tied to the Fastback on 15-inch wheels, so the correct choice depends on whether the car is being kept in a traditional bias-ply setup or is using the radial fitment.

The practical next step is to confirm what is actually on the car now, including wheel width and tire construction. That matters because a 165R15 radial and a 600-15 bias-ply are not the same type of tire, even though they share the same wheel diameter. On a vintage Volkswagen, previous owner changes can affect what belongs on the car today.

The 1968 Volkswagen Fastback uses a 15-inch rim diameter with both of its primary tire sizes. That means 165R15 radial and 600-15 bias-ply tires are both built for a 15-inch wheel, even though the construction and sizing systems are different.

Rim diameter is only the first check on a collector Volkswagen. Wheel width also matters, especially when comparing the narrower 600-15 bias-ply fitment with the wider range of 165R15 radial products. If the car has replacement wheels, verify the actual rim width before choosing a tire so the selected size matches both the wheel and the intended use.

The 1968 Volkswagen Fastback Sedan is associated with the same two size paths used on this vehicle: 165R15 in radial construction and 600-15 in bias-ply construction. The difference is not a separate wheel diameter but the choice between two established sizing and construction approaches.

That makes the buying decision more about the car's current setup and your ownership goals than about trim-level differences. A restoration-oriented car may stay with 600-15 bias-ply, while a driver may already be equipped for 165R15 radials. Looking at the wheels and the tires currently mounted is the cleanest way to confirm which direction makes sense.

On a 1968 Volkswagen Fastback, 600-15 is the bias-ply tire size. It uses the older numeric sizing format, with 600 representing an approximate 6.00-inch nominal section width and 15 indicating the wheel diameter. That makes it the traditional construction choice on this car.

Choosing 600-15 usually points toward a more vintage driving feel and a period-style presentation. Because bias-ply and radial tires behave differently, it is worth confirming that the wheels and overall setup match the construction you intend to run. If the car has already been converted to radials, the better comparison is against the radial sizes associated with 600-15 rather than assuming the same setup remains.

Radial equivalents for 600-15 include 165R15 as an 80-series metric radial, P165/75R15 as a P-metric 75-series radial, and P175/70R15 as a P-metric 70-series radial. These are useful comparison sizes for a 1968 Volkswagen Fastback when moving from a numeric bias-ply format into radial sizing.

Each equivalent follows a different sizing convention, so the decision is not simply radial versus bias-ply. A recommended rim-width range of 4 to 5 inches is associated with these alternatives, and the car should be checked for wheel width, clearance, and overall compatibility before changing construction. Equivalent does not mean automatic interchangeability on every vintage Volkswagen setup.

Both approaches belong in the conversation for a 1968 Volkswagen Fastback. The traditional bias-ply fitment is 600-15, while 165R15 serves as the radial fitment and also appears as the 80-series radial equivalent for 600-15. The better choice depends on whether the car is being preserved in a traditional style or driven with a radial setup in mind.

Bias-ply selection tends to suit owners focused on older construction and period-style presentation, while the 165R15 radial opens a much wider range of brands, series, and sidewall treatments. Before switching, look closely at wheel width and the actual wheel-and-tire package on the car. Vintage Volkswagens are often changed over time, so the current configuration matters as much as the intended appearance.

Start with the correct size and construction for the car's current setup. A 1968 Volkswagen Fastback uses either 600-15 bias-ply or 165R15 radial, both on 15-inch wheels, so the real decision is whether the car is staying with traditional bias-ply construction or using the radial fitment.

After that, compare the details that shape the ownership experience: wheel-width compatibility, sidewall style, tire series, and brand options. A restoration-oriented car may lean toward the simpler bias-ply choices, while a regularly driven Fastback may benefit from the broader radial assortment. Looking at how the car will be used helps narrow the right tire without treating every available option as the same.

The available sidewall styles for 1968 Volkswagen Fastback tires include blackwall, narrow whitewall, and wide whitewall. Those choices appear mainly within the 165R15 radial range, while 600-15 bias-ply options are available in blackwall and wide whitewall form.

Sidewall style changes the look of the car more than the fitment itself, so it is one of the most visible selection choices once the correct size is confirmed. A blackwall tire gives the Fastback a cleaner, understated presentation, while whitewall options create a stronger restoration-oriented look. Appearance should be balanced with construction, wheel compatibility, and how closely the tire suits the character you want the car to project.

Tires for the 1968 Volkswagen Fastback are available from BFGoodrich, Michelin, Vredestein, Firestone, Coker Classic, and American Classic. The broadest brand selection appears in 165R15 radial, while 600-15 bias-ply choices are represented by BFGoodrich in the available products.

Brand matters mainly as part of a larger selection picture that includes tire series, sidewall style, and construction type. On this car, the first filter should still be size and whether the Fastback is staying with 600-15 bias-ply or using 165R15 radial. Once that is settled, the available brands give you room to compare traditional appearance, Euro-style radial offerings, and whitewall presentation.

For a period-style 1968 Volkswagen Fastback, 600-15 bias-ply is the natural starting point because it keeps the car in its traditional numeric sizing and bias-ply construction. That makes it the size to consider first when the goal is a more historically grounded appearance and an older-style tire presentation.

A period-style look can also be shaped by sidewall treatment, especially if the car is already using 165R15 radials. The best visual choice depends on how strictly original the project needs to be. When exact restoration accuracy matters, compare your tire choice against marque references, surviving cars, and vehicle-specific historical documentation rather than assuming any currently available sidewall treatment is automatically correct.

Tire construction changes the overall visual character of a restored 1968 Volkswagen Fastback even when the wheel diameter remains 15 inches. A 600-15 bias-ply gives the car a more traditional vintage presentation, while a 165R15 radial shifts it toward a later, more modernized road-going look.

That visual difference becomes more noticeable once sidewall style enters the picture. Blackwall, narrow whitewall, and wide whitewall radial options can make the Fastback look very different from one build to another, even in the same size. For restoration work, construction should be chosen as part of the car's overall theme, not as an isolated tire decision divorced from wheels, stance, and period appearance.

Yes, modifications can affect tire fitment on a 1968 Volkswagen Fastback even when the car still uses a 15-inch wheel. Aftermarket wheels, changes in wheel width, altered suspension height, or body modifications can all influence whether a 600-15 bias-ply or 165R15 radial setup remains appropriate.

That matters because this Fastback has both bias-ply and radial paths, and each reacts differently to wheel and chassis changes. A car that has been lowered or fitted with non-stock wheels should be checked for clearance at the fenders, suspension, and steering range before new tires are chosen. Confirming the actual wheel dimensions on the car is especially important on older Volkswagens.

Before driving a 1968 Volkswagen Fastback on new tires, inspect the wheels for correct diameter and width, make sure the tires are mounted to the intended construction and size, and confirm that there is no rubbing at full steering lock or through suspension movement. Tire pressure should also be set appropriately for the chosen tire.

A vintage car deserves a broader check than tire installation alone. Look over the suspension, steering components, and brake condition, then examine the new tires after the first miles for any signs of uneven contact or interference. On a Fastback that has sat for long periods, it is also wise to watch for air loss and recheck clearances after the car is back in regular motion.

Tires on a collector 1968 Volkswagen Fastback should be maintained with regular pressure checks, visual inspections, and careful storage habits. Whether the car is running 600-15 bias-ply or 165R15 radial tires, look for cracking, bulges, cuts, irregular wear, and signs that the car has been sitting too long on one spot.

Storage conditions make a real difference on older hobby cars. Keeping the Fastback away from prolonged sunlight, moisture, and ozone sources helps preserve the tires between drives, and moving the car periodically can reduce stress from long static storage. Before longer trips, inspect tread and sidewalls closely and make sure the tires still suit the wheel setup currently on the car.