1973 Volkswagen Squareback Tires

The 1973 Volkswagen Squareback uses two primary tire sizes: 165R15 in radial construction and 600-15 in bias-ply construction. Both are 15-inch fitments, but they follow different sizing systems and deliver a different visual presentation on the car.

Choosing between them starts with the wheels currently on the Squareback and the type of result you want. A 165R15 keeps the car in a Euro-metric radial format, while 600-15 keeps a traditional numeric bias-ply look. On a modified or long-stored car, it is smart to confirm wheel width, tire age, and basic clearance before settling on either size.

Both primary tire sizes for the 1973 Volkswagen Squareback use a 15-inch rim diameter. That applies to the 165R15 radial option and the 600-15 bias-ply option, so wheel diameter stays consistent even though the tire constructions and sizing formats differ.

Rim diameter is only part of the fitment picture. Product options in these sizes call for different rim-width ranges, especially when comparing a 165R15 radial to a 600-15 bias-ply. Before changing sizes or constructions, check the actual wheel width stamped on the car’s wheels or measure it directly so the tire choice matches the wheel as well as the rim diameter.

On a 1973 Volkswagen Squareback, 600-15 is a vintage numeric bias-ply size. The 600 refers to an approximate 6.00-inch nominal section width, and the 15 refers to the wheel diameter in inches. It is an older American-style sizing format rather than a modern metric radial size.

That matters because a 600-15 should be viewed as a bias-ply fitment first, not simply as another way of writing 165R15. Buyers often compare it with radial equivalents, but construction, wheel width, and appearance all come into play. When a Squareback has replacement wheels or suspension changes, verify the actual setup before using a radial alternative.

For the 1973 Volkswagen Squareback, 600-15 is a bias-ply tire size. It uses a vintage numeric sizing format and is available in bias-ply construction, which gives it a more traditional look than the 165R15 radial fitment.

That distinction affects more than terminology. A buyer choosing 600-15 is usually prioritizing period-style presentation and a classic bias-ply profile, while a 165R15 points toward a radial-format setup. Before changing from one construction to the other, compare wheel width and make sure the tire choice still suits the car’s clearance and intended road use.

Radial equivalents for 600-15 include 165R15 as an 80-series metric radial, P165/75R15 as a 75-series P-metric radial, and P175/70R15 as a 70-series P-metric radial. Those three sizes are the established radial alternatives tied to the original 600-15 fitment.

Each alternative uses a different sizing convention, so the choice is not just bias-ply versus radial. The recommended rim-width range attached to this equivalency group is 4 to 5 inches, which makes wheel measurement especially important. Final selection should also account for tire clearance and the way the Squareback is actually set up today.

Start by confirming the Squareback’s wheel diameter and actual wheel width, then compare the intended radial size with the bias-ply size being replaced. For a 600-15 conversion, the recognized radial alternatives are 165R15, P165/75R15, and P175/70R15, and the relevant equivalency group uses a 4 to 5 inch rim-width range.

A construction change should also prompt a close look at steering clearance, fender clearance, suspension condition, and tire age on any existing set. Cars with aftermarket wheels, lowered stance, or non-stock alignment settings deserve extra care. That way, the conversion is evaluated as a complete fitment decision rather than only a tire-size comparison.

The first choice is whether the Squareback should run a 165R15 radial or a 600-15 bias-ply. After that, the most important factors are wheel-width compatibility, sidewall appearance, tire series, and whether the car is being selected for regular driving, a traditional presentation, or a restoration-oriented look.

A radial-format 165R15 opens up more brand and style variety, including blackwall, narrow whitewall, and wide whitewall options. A 600-15 keeps the vehicle in a classic bias-ply format with a simpler group of choices. Matching the tire to the car’s actual wheels and intended use will usually narrow the decision faster than focusing on brand alone.

Sidewall choices for a 1973 Volkswagen Squareback include blackwall, narrow whitewall, and wide whitewall, depending on the tire size and series. The 165R15 radial category offers the broadest range of sidewall treatments, while 600-15 bias-ply options are available in blackwall and wide whitewall form.

That gives the Squareback owner room to shape the car’s appearance without leaving the proper size family. Blackwall tends to keep the look simple and understated, while whitewall options create a more period-style presentation. Sidewall style should still be chosen after confirming the correct size and wheel-width match, since appearance alone should not drive fitment.

Tires for the 1973 Volkswagen Squareback are available from Coker Classic, American Classic, Firestone, BFGoodrich, Michelin, and Vredestein. Most of that variety appears in the 165R15 radial size, while the 600-15 bias-ply fitment is represented by BFGoodrich options in the Silvertown Classic Bias Ply series.

Brand choice should be considered alongside construction, sidewall style, and the specific tire series rather than treated as a standalone decision. Some buyers will want a simple blackwall radial, while others may be looking for a whitewall presentation or a bias-ply look. Checking rim-width compatibility can eliminate mismatches before the brand comparison even begins.

A period-style 1973 Volkswagen Squareback can be approached in two ways. A 600-15 bias-ply keeps the car in a traditional sizing and construction format, while a 165R15 radial can still support a vintage presentation when chosen in the right sidewall style and overall look.

The best direction depends on whether the goal is visual authenticity, everyday road use, or a balance of both. Bias-ply construction usually leans more traditional in appearance, while a whitewall or blackwall 165R15 radial can suit a tasteful stock-style build. When exact originality matters, marque references and vehicle-specific historical sources are worth checking before making the final call.

Tire construction changes the visual character of a restored 1973 Volkswagen Squareback even when the rim diameter stays at 15 inches. A 600-15 bias-ply presents the car in an older tire format, while a 165R15 radial gives it a later, more modernized look within the same general vintage era.

Sidewall treatment deepens that effect. Blackwall keeps the car understated, while narrow or wide whitewalls push the Squareback toward a more styled, restoration-oriented appearance. Since construction and sidewall both shape how the car reads at a glance, many owners choose appearance first and then confirm wheel-width and road-use suitability before committing.

Yes, modifications can affect tire fitment on a 1973 Volkswagen Squareback even when the chosen size is one of the correct primary options. Aftermarket wheels, different wheel widths, altered offset, lowered suspension, or body changes can all change how a 165R15 or 600-15 sits on the car.

That is why an owner should confirm more than just the nominal tire size. Wheel width, steering travel, fender clearance, and suspension condition all matter once the car has moved away from a stock setup. A Squareback with custom wheels or stance changes deserves a careful test-fit mindset before the final tire selection is made.

Before driving a 1973 Volkswagen Squareback on new tires, inspect the wheels for correct diameter and width, make sure the tires are seated properly, and verify inflation pressure, valve-stem condition, and basic clearance at the fenders and steering components. Lug hardware should also be checked before the first road use.

A collector Volkswagen benefits from a broader once-over at the same time. Look for worn suspension parts, brake issues, uneven ride height, and anything that could cause rubbing or unstable tracking. After the first few miles, it is wise to recheck air pressure and look again for any contact marks that suggest a fitment problem.

Tires on a collector 1973 Volkswagen Squareback should be maintained with regular pressure checks, visual inspections, and attention to age-related deterioration. Even low-mileage tires can develop cracking, flat spotting, or air loss if the car sits for long periods, especially when storage conditions are poor.

Good collector-car practice includes keeping the Squareback out of prolonged sunlight, moisture, and ozone sources, and inspecting tread and sidewalls before each driving season. Rotating use, moving the car periodically, and watching for bulges or cuts can help catch problems early. Older tires that still look decent should still be evaluated carefully before extended road use.