Jordan G Tires

Jordan G uses two tire sizes across the 1929 and 1930 model years: 30X6.00 and 6.00-18. The first is an antique diameter-by-section size, while the second is a numeric size built around an 18-inch rim diameter. Both sizes appear in both years, so year alone does not narrow the choice to one tire size.

The practical next step is to inspect the wheels already on the car and compare the sidewall markings on any existing tires. If the car is already fitted with 18-inch wheels, 6.00-18 is the natural place to start. If the car is built around the earlier 30X6.00 convention, confirm the wheel details carefully before selecting a replacement tire.

On a Jordan G, 30X6.00 is an antique-style size code rather than a modern rim-based code. The 30 refers to the tire's overall outside diameter in inches, and the 6.00 refers to the nominal section width in inches. That means the first number is not the wheel diameter, which is why this format often confuses modern buyers.

The important implication is that you cannot identify the wheel size from the 30X6.00 marking alone. A Jordan G owner should measure the wheel, inspect any existing tire markings, and compare against restoration references before choosing a replacement. That extra step helps prevent ordering a tire that looks close in size but does not belong on the rim.

A 1929 Jordan G has 30X6.00 and 6.00-18 listed because the model appears in a transition period when different tire sizing conventions were in use. The split is not tied only to the year, since both sizes also appear for 1930. In practical terms, the listing reflects that more than one wheel-and-tire setup is associated with Jordan G during this short production span.

The right way to resolve that split is to identify the actual wheel and existing fitment on your specific Jordan G rather than relying on the model year by itself. Owners restoring a car to factory-era appearance should also compare against period photos, surviving original wheels, and marque references. That approach is far more reliable than assuming every Jordan G used one universal size.

Jordan G uses an 18-inch rim when fitted with the 6.00-18 size. Jordan G also uses the antique-format 30X6.00 size, but that code does not reveal the wheel diameter because its leading number is the tire's overall outside diameter, not the rim size. As a result, the model cannot be reduced to a single wheel diameter without checking the actual setup on the car.

That makes wheel inspection especially important before choosing tires for a Jordan G. If your car takes 6.00-18, the rim diameter question is straightforward. If your car wears 30X6.00, measure the wheel and compare it with established Jordan references so the tire, tube, and wheel are working from the same specification.

The correct tire size for a 1929 or 1930 Jordan G is confirmed by matching the car's actual wheel and existing tire convention to one of the two listed sizes: 30X6.00 or 6.00-18. Both sizes appear in both years, so the model year is only the starting point. Sidewall markings, wheel measurements, and surviving original components are the most useful clues.

A careful owner should inspect all four wheels, since collector cars sometimes pick up mixed parts over the decades. It also helps to compare the car against factory-era literature, restoration notes, or a Jordan specialist who knows how these cars were commonly equipped. That process is the best way to settle the size question before choosing a replacement tire.

A stored Jordan G should be kept in a cool, dry, dark space away from direct sunlight, ozone sources, and prolonged contact with petroleum products. Clean floors, stable temperatures, and proper inflation all help reduce sidewall stress and flat-spotting. On a pre-war car, those basics matter even more because the tire and wheel system is usually seeing very low annual mileage.

If the Jordan G will sit for extended periods, move it occasionally or support it in a way that reduces continuous loading on one contact patch. Inspect the tires after every long storage cycle for cracking, sidewall distortion, and bead-area changes. A collector car that looks fine at a glance can still develop age-related issues while parked.

Tires on a Jordan G should be inspected before each drive and more thoroughly at regular intervals during the season. On a low-use pre-war automobile, age and storage conditions can matter as much as mileage, so visual checks are only the beginning. Pay close attention to sidewalls, valve areas, tread separation signs, and any change in how the car sits or rolls.

A sensible routine is a quick walk-around before every outing, plus a more deliberate inspection several times a year. Any vibration, pull, or unusual ride behavior should prompt a closer look before the car is driven again. Period-style collector tires reward careful observation, especially on cars that spend most of their lives in storage or display.

Tires on a Jordan G should be replaced when they show age cracking, structural deterioration, sidewall damage, bead damage, repeated air-loss problems, or any sign that the casing is no longer sound, even if tread remains. Low-mileage collector cars often age out their tires long before they wear them out. Pre-war service also places a premium on casing integrity rather than just visible tread depth.

A Jordan G owner should treat long-stored tires, visibly hardened tires, and any tire with an uncertain age history as candidates for replacement review. Specialist inspection is especially important when an older car has spent years parked or has recently returned to service. The goal is not maximum tread use, but confidence that the tire is still structurally appropriate for careful road use.

Jordan G is associated here with two period-appropriate size conventions: 30X6.00 and 6.00-18. That tells you the model sits in a transitional era when more than one tire specification was used. The exact original fitment for a particular Jordan G should be tied to the wheel equipment and original-era references for that individual car.

For restoration work, the best approach is to compare the car's wheels, surviving paperwork, and period photographs before settling on one size. Judges and marque experts will usually care more about a coherent, correct setup than about picking a size by year alone. Matching the proper tire convention to the proper wheel is central to an authentic result.

Correct tire fitment can affect both presentation and judging on a Jordan G because tire size, overall profile, and stance all influence how the car sits and reads visually. On a pre-war automobile, an incorrect tire can change the character of the wheel opening and the period look of the entire car. Collectors and judges usually notice those details quickly.

A Jordan G restored for show use should have its tire size checked against the car's wheel equipment and accepted marque practice. Even if the car is primarily driven rather than judged, the right size helps preserve historical proportions. When in doubt, period literature and Jordan club knowledge are better guides than modern assumptions about interchangeability.

Jordan G restorations should use a sidewall style that matches the era, the intended presentation of the car, and the specific tire options available in the chosen size. Late-1920s and early-1930s cars can appear with more than one period-appropriate visual treatment, so sidewall choice is part of the restoration decision rather than an afterthought. The tire's overall profile and construction style should still remain consistent with the car's wheel setup.

Owners restoring a Jordan G for formal judging should compare sidewall appearance with original photography, sales literature, and known survivor cars. A touring or driving restoration may allow more flexibility, but the sidewall still needs to look appropriate to the car's age and stance. The best result is a tire that reads correctly both in size and in visual character.

A Jordan G can be driven on public roads only when the tires, wheels, tubes if required, and overall mechanical condition are all in sound order and suited to the car's period design. A pre-war automobile places very different demands on its tires than a modern car, especially in braking, steering feel, and sustained-speed use. Safety depends on the whole vehicle system, not the tire by itself.

That means a Jordan G should be driven conservatively and inspected thoroughly before regular road use. Tire age, inflation, wheel condition, brake adjustment, and steering integrity all deserve attention together. Even when the tires are correct, the car should be used with the pace and caution appropriate to an early-1930s collector automobile.

Before driving a Jordan G, check tire inflation, sidewall condition, visible cracking, valve condition, wheel security, and any signs of bead or tread distress. Because Jordan G can use either 30X6.00 or 6.00-18, it also matters that all four tires and wheels match the intended setup. Uneven or mixed fitment can create handling and appearance problems on a car of this age.

A good pre-drive routine also includes looking at brake function, steering free play, and how the car sits at each corner. If the Jordan G has been parked for a long period, roll it slowly first and listen for signs that a tire has gone out of round or developed a structural issue. Small checks before departure are far easier than roadside trouble with a pre-war car.

A Jordan G should be driven at moderate, conservative speeds that respect both the age of the car and the character of period-style tires. Even with correct replacement tires, a 1929-1930 automobile does not deliver modern braking, steering, suspension control, or emergency response. The safe speed is the one that leaves a wide margin for road conditions, traffic, and the car's mechanical state.

In practice, that means treating the Jordan G as a collector car rather than a high-speed touring machine. Smooth inputs, extra following distance, and avoidance of heavy traffic are sensible habits. If the car has older components elsewhere in the running gear, the prudent answer is to drive even more gently until the full vehicle has been evaluated.