1966 Nissan Tire Fitment Guide

1966 Nissan vehicles use five tire sizes across four model lines: 165R14 for the 1600, 560-14 for the 1600, L320, and L520, 6.00-14 for the L320 and L520, and 6.50-15 plus 700-15 for the Patrol. The 14-inch sizes cover the roadster and compact trucks, while the Patrol moves to 15-inch fitments. Rim-width guidance is available for some sizes, including 165R14 at 4.0 to 6.0 inches depending on product, 560-14 at 3.50 to 4.00 inches, and 700-15 at 5.00 to 5.50 inches.

That makes model identification the first checkpoint on a 1966 Nissan. If you start with year and make alone, it is easy to mix a 14-inch passenger-car or light-truck tire with a Patrol size that belongs on a completely different wheel. Once the model is confirmed, compare the exact size already on the vehicle to the wheel diameter and width, especially if the vehicle has been restored, modified, or fitted with replacement wheels over the years.

On a 1966 Nissan, 560-14 is a numeric bias-ply size. The 5.60 figure is the nominal section width, and the 14 is the wheel diameter in inches. In this year and make, 560-14 appears on the 1600, L320, and L520, making it one of the most widely shared sizes in the lineup. BFGoodrich offers it in blackwall, narrow whitewall, and wide whitewall forms, all as bias-ply tires with a 906-pound load capacity at 30 psi.

That code matters because a modern buyer may assume every number before the dash is the wheel diameter or that the tire is interchangeable with any 14-inch classic size. It is not. Numeric bias-ply sizing follows older conventions, and the actual stance, sidewall shape, and wheel compatibility should be checked against the wheel and the vehicle’s intended restoration style before choosing between blackwall and whitewall versions.

On a 1966 Nissan, 165R14 is an early metric radial size. The 165 indicates a nominal section width of 165 millimeters, the R denotes radial construction, and the 14 is the wheel diameter in inches. In practice, this older Euro-metric style generally corresponds to an 80-series profile even when the aspect ratio is not written out. Within the 1966 Nissan range, 165R14 is used on the 1600 and appears in blackwall radial choices from Pirelli, Michelin, and Vredestein.

That makes 165R14 a useful decoding point for roadster owners who are more familiar with later P-metric sizes. It is still a classic-format radial, not a contemporary high-profile replacement code. If your 1600 has 14-inch wheels and you want radial construction, 165R14 is the size family to compare first, then narrow your choice by brand, rim-width compatibility, and the exact sidewall and speed-rating markings on the tire you prefer.

For a 1966 Nissan 1600, the choice between 165R14 and 560-14 is mainly a choice between radial and bias-ply construction. The 165R14 radial is offered by Pirelli, Michelin, and Vredestein in blackwall form, while the 560-14 is a BFGoodrich bias-ply available in blackwall, narrow whitewall, and wide whitewall styles. Both are 14-inch fitments, but they represent different eras of tire design and different visual character on the car.

Owners leaning toward original-period appearance often stay with the numeric bias-ply look, especially on a restoration where visual authenticity matters. Owners who plan to drive their roadster more regularly often focus first on the radial option because it keeps the car in a vintage size format while moving to radial construction. The right answer starts with how you use the car and whether your priority is restoration character, road manners, or a mix of both.

1966 Nissan tire sidewall styles vary by size. The 165R14 radial choices for the 1600 are blackwall only, the 560-14 bias-ply comes in blackwall, narrow whitewall, and wide whitewall versions, and the 700-15 Patrol size is available in blackwall and wide whitewall styles. That gives the widest appearance flexibility to owners working with 560-14 or 700-15 fitments, while the radial 165R14 stays more understated and European in presentation.

For a 1966 Nissan, the most era-appropriate sidewall usually depends on the model and the style of restoration rather than a single rule across the whole make. A compact sports car often looks most natural on blackwalls, while period whitewalls can suit certain truck or utility restorations if they match the vehicle’s intended presentation. Show standards can vary, so if originality matters at a judged-event level, compare your choice with period photos and marque-club guidance.

Several brands cover 1966 Nissan vehicles, but they do so by size rather than across the entire model range. The 165R14 radial is available from Pirelli, Michelin, and Vredestein. The 560-14 bias-ply comes from BFGoodrich, and the 700-15 Patrol size is available from Firestone, BFGoodrich, and STA. Each of those brands sits in a different corner of the vintage-tire world, from classic European-style radials to traditional American bias-ply reproductions and utility-minded truck tires.

That brand split matters because the best starting point is your actual size, not a favorite name on the sidewall. A 1600 owner shopping 165R14 will compare mostly blackwall radial choices, while a Patrol owner looking at 700-15 has access to a broader mix of classic blackwall and whitewall bias-ply options. Once size is settled, compare brand by construction type, sidewall style, rim-width compatibility, and the visual look you want on the finished vehicle.

Rim-width guidance for 1966 Nissan tires depends on the exact size. The 165R14 radial fits rims from 4.0 to 5.5 inches on the Vredestein and 4.50 to 6.00 inches on the Michelin. The 560-14 bias-ply fits 3.50 to 4.00-inch rims, and the 700-15 bias-ply fits 5.00 to 5.50-inch rims. Those numbers reinforce how different the roadster, compact-truck, and Patrol applications can be even when two sizes share a similar vintage look.

Wheel width is worth checking before ordering because a classic vehicle may no longer wear its original wheels. Restorations, wheel swaps, and decades of service can change what is actually on the vehicle. Measure the wheel, confirm the tire’s approved rim-width range, and make sure the size you want matches both the vehicle model and the wheel itself. That step is especially important when moving between bias-ply and radial constructions on a 14-inch Nissan application.

Tube status on 1966 Nissan tires depends on the exact product and size. One 165R14 Michelin radial is marked TL for tubeless use, while other 165R14 options do not carry the same marking in the available range. The 560-14 and 700-15 bias-ply offerings do not show a universal tube designation across every product here, so the safest reading is to confirm tube use by the specific tire and by the wheel type on the vehicle.

That matters because tube requirements are shaped by both tire construction and the wheel itself. Many vintage wheels were designed around tube-type service, and a tire that can operate tubeless on one wheel may still need a tube on another. Before final assembly, check the sidewall marking, inspect the wheel condition, and confirm whether the rim has the proper profile and sealing surfaces for tubeless use if that is the direction you plan to take.

On some 1966 Nissan models, the answer can be yes in principle, but only within the same wheel diameter and only after checking width. The 1600 uses both 165R14 and 560-14, so both belong to 14-inch wheels. The Patrol uses both 6.50-15 and 700-15, so both belong to 15-inch wheels. That confirms diameter compatibility within each model, but wheel width still needs to match the tire you choose.

The practical takeaway is that wheel diameter alone is not the final answer. A 14-inch 1600 wheel still needs to fall within the approved rim-width range for the exact radial or bias-ply tire under consideration, and the same logic applies to the Patrol’s 15-inch options. If the vehicle has aftermarket wheels or a replacement wheel from another Nissan application, verify the wheel first rather than assuming any same-diameter classic tire will mount correctly.

A 1966 Nissan should be stored in a cool, dry, dark environment with the tires protected from direct sunlight, electric motors, battery chargers, furnaces, and other ozone-producing equipment. Keep the tires clean, maintain proper inflation, and move the vehicle periodically so it does not sit on the same footprint for months at a time. Bias-ply tires, which appear on most of the 1966 Nissan range, are more prone to flat-spotting during long static storage than radial tires.

If the vehicle will sit for an extended season, many collectors either roll it occasionally or support it in a way that reduces sustained load on the tires without letting the suspension hang unnaturally. That helps preserve sidewall shape and reduces the set that can develop in a bias-ply carcass. The more original and low-mile your Nissan is, the more important those simple storage habits become because age, not just tread wear, affects tire condition.

On a 1966 Nissan, tire life is usually judged more by age than by mileage. Collector vehicles often cover limited miles, so a tire can look serviceable while still aging out. A good rule is to inspect more carefully after five to seven years of service and to treat around ten years as the point where replacement deserves serious consideration, even if tread depth still looks healthy. The DOT date code remains the key reference on any tire modern enough to carry one.

That timeline matters because a lightly used roadster, pickup, or Patrol may spend far more time parked than driven. Heat cycles, storage conditions, inflation history, and ozone exposure all shape the usable life of the tire casing. If your 1966 Nissan is driven only occasionally, age-based replacement planning is more realistic than trying to estimate life by miles alone. Vintage vehicles reward preventive replacement far more than waiting for obvious failure signs.

Tires on a 1966 Nissan should be checked before every drive and inspected more thoroughly before any extended outing. Look for sidewall cracking, tread separation, uneven wear, embedded damage, bulges, and pressure loss. On tube-type or potentially tube-dependent vintage wheel setups, inspect valve stems and watch closely for slow leaks that may trace back to the tube, flap, or wheel condition rather than the tread itself.

That routine is especially important on a collector vehicle because a car or truck that sits for weeks can develop issues between drives without showing obvious symptoms in the garage. A quick visual check before a short local trip may be enough, but a road trip or show run deserves a fuller inspection plus a check of the spare. Catching a small crack, a weak valve stem, or a pressure drop early is far easier than dealing with a failure on the road.

For a 1966 Nissan 1600, bias-ply construction is the historically expected starting point for an originality-minded restoration, and 560-14 is the period-style size tied directly to the model. A 165R14 radial also appears in the 1600 fitment range, but radial construction represents a different character choice than a traditional mid-1960s bias-ply presentation. No specific original-equipment brand should be assumed without market-specific evidence, especially on an imported model sold in different regions.

If your goal is factory-style authenticity, start with the 560-14 size and then narrow the visual choice by blackwall or whitewall treatment based on period photos and the exact look you are after. If your car has a known export-market history or a judged-show target, consult a roadster registry or marque specialist before finalizing the sidewall style. Those details can matter more in judging than many owners expect, especially on a sports car with exposed wheel openings.

Correct tire fitment matters on a 1966 Nissan because judges and knowledgeable enthusiasts often notice size, construction type, and sidewall presentation immediately. A bias-ply size in the right visual profile supports an authentic 1960s look, while a radial can change the stance and the sidewall impression even when the wheel diameter is correct. Whitewall width also plays into authenticity, particularly on vehicles where blackwall presentation may be more faithful to the model’s original market personality.

For a serious show car, tire choice should match the standard of restoration you are pursuing. A local cruise-in may never penalize a practical radial choice, but marque-oriented judging can be much stricter about construction and sidewall details. If your 1966 Nissan is being prepared for concours-level evaluation, verify the expected size and appearance with event rules, marque clubs, or surviving period photography before committing to a finished set of tires.

For the 1966 Nissan in 560-14, the core tire stays the same bias-ply size while the visual treatment changes. BFGoodrich offers 560-14 in blackwall, narrow whitewall, and wide whitewall versions, all with the same 906-pound load capacity at 30 psi and the same 3.50 to 4.00-inch rim-width range. The difference is primarily appearance rather than fitment or load capability, which makes sidewall style the deciding factor once the size itself has been confirmed.

That gives restorers some freedom, but it also puts more weight on historical taste. A blackwall usually reads more restrained and sporting, while a narrow or wide whitewall can push the look more distinctly toward a period-custom or dressier restoration feel. Before choosing among them, step back and consider the model, the body color, and the way you want the finished vehicle to present. On a vintage Nissan, sidewall style can strongly influence the car’s visual era and character.

1966 Nissan tires can be suitable for highway driving when the size, construction, condition, and speed rating match the way the vehicle is used. The 165R14 radial choices carry H ratings, which correspond to a 130 mph ceiling. The bias-ply sizes shown here do not carry matching published speed letters in the same way, so they should be treated as vintage-construction tires intended for the realistic operating envelope of a mid-1960s roadster, pickup, or utility 4x4 rather than modern sustained high-speed use.

In real-world driving, the vehicle itself often becomes the limiting factor before the tire does. Brakes, steering, suspension condition, gearing, and the general feel of a 1966 Nissan matter just as much as the tire specification when road speed rises. A sound radial-equipped 1600 may feel different from a bias-ply Patrol or pickup on the highway, but in every case the safest approach is to drive within the mechanical comfort zone of the vehicle and the rating of the exact tire.

Inflation pressure on a 1966 Nissan should start with the vehicle manufacturer’s recommendation for the model and the tire maker’s rated maximum for the exact tire. Where load-and-pressure figures are available, 560-14 carries 906 lbs at 30 psi, 700-15 reaches 1,700 lbs at 32 psi on Firestone and BFGoodrich options, and one 165R14 radial carries 1,102 lbs at 51 psi. Those figures are not interchangeable operating recommendations across the full 1966 Nissan range.

The important point is that maximum sidewall pressure is not automatically the best running pressure for your car or truck. Vehicle weight distribution, wheel width, ride goals, and original factory guidance all matter. Use the owner’s manual or marque literature to establish the correct baseline for your specific 1600, L320, L520, or Patrol, then confirm that your chosen tire’s pressure range supports that target without borrowing a number from a different size or model.

Before a longer drive in a 1966 Nissan, inspect every tire for cracking, weathering, cuts, bulges, irregular wear, and proper inflation, and do not forget the spare. Check valve stems closely, especially if the vehicle uses tube-type service or may require tubes because of wheel design. A Patrol, pickup, or roadster that has been parked for long stretches also deserves a quick look for flat spots and any signs of separation or pressure loss before it leaves the garage.

That tire check should be one part of a broader pre-trip inspection on a vehicle of this age. Wheel fasteners, brake operation, steering play, fluid levels, and charging-system health all deserve attention before highway miles add heat and stress. On an older Nissan, long-drive confidence comes from the whole package working together. Tires are the only part touching the road, but they perform best when the wheels, suspension, and rest of the chassis are equally ready.