1973 Volkswagen Karmann Ghia Tires

A 1973 Volkswagen Karmann Ghia uses two primary tire sizes: 155R15 in radial construction and 600-15 in bias-ply construction. Both sizes are 15-inch fitments, so the choice is not about changing wheel diameter as much as it is about choosing the construction and appearance that suit the car.

That makes the next step fairly clear. Confirm that the car still has wheels appropriate for the intended tire, then decide whether the goal is a classic radial presentation in 155R15 or a more traditional bias-ply look in 600-15. Wheel width, overall proportions, and clearance should still be checked before making a change.

Both primary tire sizes for the 1973 Volkswagen Karmann Ghia use a 15-inch rim diameter. The 155R15 radial fitment and the 600-15 bias-ply fitment are both built around that same wheel diameter, which helps narrow the fitment question quickly.

Rim diameter alone does not settle the whole decision, though. Tire choice should also take wheel width into account, especially when comparing bias-ply and radial products with different recommended rim-width ranges. A car that has had aftermarket wheels fitted may still be 15-inch, but width and clearance can change how suitable a given tire is.

600-15 is a vintage numeric bias-ply size. The 600 portion represents an approximate 6.00-inch nominal section width, and the 15 identifies the wheel diameter in inches. On a 1973 Volkswagen Karmann Ghia, it is the bias-ply tire size rather than the radial one.

That matters because a 600-15 points you toward a traditional construction and a more vintage visual character. It also means product choices are centered on bias-ply styling, including blackwall and wide whitewall versions. Anyone moving away from that size toward a radial should compare wheel width and vehicle clearance before treating an equivalent as suitable.

On the 1973 Volkswagen Karmann Ghia, 600-15 is a bias-ply tire size. The radial primary fitment is 155R15, so the two sizes represent different construction types as well as different sizing systems for the same 15-inch wheel diameter.

That distinction shapes the buying decision. A 600-15 keeps the car in a traditional bias-ply format, while 155R15 moves into a classic Euro-metric radial format. Owners comparing the two should look beyond the diameter and verify wheel width, appearance goals, and how closely the present wheel and suspension setup matches the car's intended configuration.

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 alternatives to the bias-ply size rather than additional primary sizes for the 1973 Volkswagen Karmann Ghia.

The useful difference is in the sizing format and profile family, not just the presence of radial construction. A recommended rim-width range of 4 to 5 inches applies to those equivalents, and the car should still be checked for wheel compatibility and clearance. Equivalent sizing is a comparison tool, not an automatic interchange claim.

Start by confirming the actual wheel size and width on the car, then compare the intended radial size with the present 600-15 bias-ply setup. For this Karmann Ghia, radial alternatives tied to 600-15 include 165R15, P165/75R15, and P175/70R15, all on a 15-inch rim.

The conversion decision should also include wheel condition, steering clearance, fender clearance, and the car's current ride height or suspension setup. A vehicle that has been modified can react differently than a stock-height car. Choosing a radial equivalent works best when the dimensions, wheel suitability, and intended driving use have all been checked first.

The first consideration is whether the car should stay with its traditional 600-15 bias-ply fitment or use the 155R15 radial fitment. Both are 15-inch sizes, but they point the car in different directions for construction, appearance, and the range of products available.

After construction choice, compare the details that actually affect ownership: sidewall style, tire series, wheel-width compatibility, and whether the car is being kept restoration-oriented or driven more regularly. A radial blackwall and a bias-ply wide whitewall create very different results on the same Karmann Ghia, even before broader fitment checks enter the picture.

Sidewall choices for the 1973 Volkswagen Karmann Ghia include blackwall and wide whitewall, depending on tire size and construction. The 155R15 radial offerings are blackwall tires, while the 600-15 bias-ply options are available in both blackwall and a 2.625-inch wide whitewall.

That makes sidewall style a meaningful part of the decision rather than a small cosmetic detail. A blackwall keeps the look restrained and traditional, while a wide whitewall gives the car a more distinctly vintage presentation. The best match depends on the appearance target, the rest of the restoration, and whether the tire choice is radial or bias-ply.

The 1973 Volkswagen Karmann Ghia has tire options from Firestone, Michelin, Avon, Vredestein, and BFGoodrich. The 155R15 radial size includes several blackwall choices across those radial-focused brands, while the 600-15 bias-ply size is available from BFGoodrich in the Silvertown Classic Bias Ply series.

Brand is only one part of the comparison. It helps more to choose by the exact size, construction type, sidewall treatment, and tire series that suit the car's intended use and look. Once those pieces are settled, the brand choice becomes clearer within the group of tires that actually match the Karmann Ghia's fitment direction.

A period-style 1973 Volkswagen Karmann Ghia can be approached in two different ways. The 600-15 bias-ply size gives the car a more traditional vintage presentation, while 155R15 keeps the car in a classic Euro-metric radial format that still suits the era well on many restoration-oriented builds.

The better choice depends on what kind of period character matters most. Bias-ply usually favors a more visibly vintage look, especially with whitewall availability, while 155R15 radial options support an authentic-feeling European road-car presentation. Anyone pursuing exact originality should compare the finished choice with marque-specific historical references before settling on brand and sidewall details.

Tire construction changes the look of a restored 1973 Volkswagen Karmann Ghia more than many buyers expect. A 600-15 bias-ply gives the car a distinctly traditional visual character, while a 155R15 radial tends to present the car in a more classic European radial style with blackwall sidewalls.

That visual shift influences the whole stance of the car, from sidewall shape to how formal or sporty the finished restoration feels. The available wide whitewall in 600-15 pushes the appearance even further toward a vintage look. Construction choice should be made alongside wheel finish, ride height, and the overall restoration theme, not as an isolated decision.

Yes, modifications can affect tire fitment on a 1973 Volkswagen Karmann Ghia even when the size itself is appropriate in principle. Changes such as aftermarket wheels, different wheel widths, altered offsets, lowered suspension, or body changes can all influence how a 155R15 or 600-15 sits on the car.

That is why the actual car should be measured and inspected before settling on a tire. A Karmann Ghia with nonstock wheels may still use a 15-inch rim but have very different clearance behavior than a stock setup. Steering lock, fender space, and suspension travel are the practical checks that matter most.

Before driving a 1973 Volkswagen Karmann Ghia on new tires, inspect the wheels for diameter and width suitability, make sure the tires are seated correctly, and confirm inflation is appropriate for the specific tire. It also helps to look over suspension and steering components so the new tires are not being asked to compensate for worn hardware.

A short local drive followed by a second inspection is a smart habit on a collector-era car. Check for rubbing, uneven clearance, air loss, or any sign that the tire is contacting the body or suspension under steering movement. Cars that sit often deserve extra attention because dormant issues tend to appear once road use resumes.

Collector tires on a 1973 Volkswagen Karmann Ghia should be maintained with regular pressure checks, routine visual inspections, and attention to age-related condition. Whether the car wears 155R15 radials or 600-15 bias-ply tires, watch for cracking, bulges, cuts, uneven wear, or slow air loss before and after drives.

Storage conditions matter almost as much as mileage on a low-use car. Keeping the Karmann Ghia away from prolonged sunlight, moisture, heat, and ozone sources helps preserve the tires between outings. It is also wise to inspect them more often than a daily-driver set, because collector vehicles can age tires long before they wear them out.