The 1930 Jordan G comes from the final years of an independent American marque whose cars reflected the upscale, style-conscious character of the late Classic Era. For owners of surviving Jordan automobiles, tire selection is part mechanical necessity and part preservation decision, because the right proportions matter as much as basic fitment. The 1930 Jordan G uses bias-ply tires, with 30X6.00 and 6.00-18 both associated with this model. That leaves room to focus on how each sizing format relates to the car’s 18-inch wheel fitment and the kind of traditional presentation you want to maintain. Before choosing a tire, confirm the wheel setup already on the car and match the size to its restoration and road-use goals.
Which Tire Size Is Right for The 1930 Jordan G
The 1930 Jordan G uses two primary tire sizes, and choosing between them starts with confirming the exact wheel and tire setup on the car. Both fitments are bias-ply, and the practical question is not just size code interpretation, but whether your Jordan is currently set up for a 30X6.00 flotation-style tire or a 6.00-18 numeric bias-ply tire on an 18-inch rim.
In a 30X6.00 size, the first number refers to an approximate overall tire diameter of 30 inches, while the second number refers to an approximate 6-inch section width. This is a bias-ply flotation or light-truck style designation that suits many late-1920s and early-1930s applications where tall, substantial tire proportions are part of the vehicle’s stance. On a 1930 Jordan G, this size is best evaluated by confirming the actual wheel dimensions already on the car and comparing the mounted tire’s appearance and clearance needs to your restoration or driving plans.
A 6.00-18 tire uses a vintage numeric bias-ply format in which 6.00 represents the nominal section width in inches and 18 refers to the rim diameter. This construction matches the traditional tire type associated with the 1930 Jordan G and aligns naturally with an 18-inch wheel setup. For buyers keeping a period-style look, this size is often the more familiar designation, but it still makes sense to verify wheel width, current tire clearances, and the car’s existing setup before settling on a replacement.
Sub-model fitment is straightforward here because the covered 1930 Jordan G Base is associated with the same two bias-ply tire sizes. The important step is confirming which of those two sizes is actually on the car before choosing a replacement.
1
1930 Jordan G Base
The 1930 Jordan G Base is associated with both 30X6.00 and 6.00-18 bias-ply fitments, so tire selection begins with verifying the wheel and tire combination already in place. That confirmation helps narrow the choice between an antique diameter-by-section format and a numeric bias-ply format while preserving the car’s traditional proportions.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Frequently Asked Questions
Questions about 1930 Jordan G tires usually come down to understanding the two size formats, confirming 18-inch wheel fitment, and choosing a bias-ply tire that suits the car’s restoration character and road-use needs.
Tire Size & Fitment
What tire size fits a 1930 Jordan G?
The 1930 Jordan G is associated with two primary tire sizes: 30X6.00 and 6.00-18. Both are bias-ply fitments, and the Base sub-model is tied to both sizes rather than to a single exclusive tire code.
That means the right choice depends on the actual wheel and tire setup already on the car. A Jordan that currently wears 18-inch rims and 6.00-18 tires should stay within that format unless the wheel and clearance situation are checked carefully, while a car set up for 30X6.00 should be evaluated in that sizing system instead of assuming the two codes are automatically interchangeable.
What size rim does a 1930 Jordan G use?
The 1930 Jordan G uses an 18-inch rim with its 6.00-18 bias-ply tire fitment. That rim diameter is the key wheel dimension tied directly to the numeric tire size used on this model.
Because 30X6.00 is an antique diameter-by-section format, the buyer should not assume the first number is wheel diameter. Before replacing tires, measure the wheel and confirm what is on the car now. Many collector vehicles have seen wheel or tire changes over the decades, and verifying the rim diameter first helps avoid choosing a tire by appearance alone.
What does 6.00-18 mean on a 1930 Jordan G?
On a 1930 Jordan G, 6.00-18 is a vintage numeric bias-ply size. The 6.00 refers to the nominal tire section width in inches, and the 18 refers to the wheel diameter in inches.
This size format is common on older American vehicles and is more straightforward than many antique designations. Even so, the number alone does not answer every fitment question. The actual wheel width, the tire’s mounted profile, and the car’s current suspension and body clearances still matter, especially on a low-production collector car where originality and long-term modifications can both affect what belongs on it now.
Choosing the Right Tire
What should I consider when choosing a 6.00-18 tire for a 1930 Jordan G?
Start with the basics: confirm that the car is using the 6.00-18 fitment on 18-inch wheels and that a bias-ply tire matches the setup and appearance you want to keep. On a prewar collector car, the tire’s overall presentation is often just as important as the size itself.
After size confirmation, focus on practical details such as wheel condition, rim width compatibility, and how the tire sits within the fender opening. A Jordan used mainly for shows may call for a different balance of priorities than one driven regularly on tours. The best choice is the one that keeps the correct size relationship to the car while matching its intended use and preserving proper clearances.
How do I choose between the available 1930 Jordan G tire sizes?
Choosing between 30X6.00 and 6.00-18 starts with identifying which sizing system your 1930 Jordan G is already using. Both are bias-ply sizes associated with the model, but they are not just two ways of writing the same thing.
The practical difference is that one is an antique diameter-by-section format and the other is a numeric bias-ply size tied directly to an 18-inch rim. That makes wheel verification especially important. Check the actual rim diameter, inspect the current tire markings, and compare the vehicle’s stance and clearances before changing formats so the replacement suits both the car and its present configuration.
What rim-fitment details matter when selecting 1930 Jordan G tires?
Rim diameter is the first rim-fitment detail to confirm on a 1930 Jordan G, especially because 6.00-18 clearly calls for an 18-inch wheel. After that, the wheel’s actual width and condition should be part of the decision before any tire is mounted.
Older wheels can vary from what a buyer expects, and collector cars sometimes carry replacements installed many years ago. Look for bent flanges, corrosion, bead-seat issues, or mismatched wheels across the car. A tire may be correct in size code yet still require closer checking if the wheel dimensions, restoration history, or previous modifications differ from a more typical surviving Jordan setup.
Restoration & Appearance
Which tire should I choose for a period-style 1930 Jordan G?
A period-style 1930 Jordan G tire choice begins with staying within the model’s associated bias-ply fitments: 30X6.00 or 6.00-18, depending on the wheel and tire setup on the car. Either size keeps the decision anchored in the sizing language and construction type appropriate to the era.
Appearance-sensitive buyers should pay close attention to tire proportions, sidewall shape, and how the mounted tire fills the wheel opening. Those details strongly influence whether the car looks properly settled on its chassis. When exact historical originality matters beyond general period style, marque-specific references, period photography, and restoration documentation are worth checking before committing to one size format over the other.
Does correct tire fitment matter for a 1930 Jordan G restoration?
Correct tire fitment matters a great deal on a 1930 Jordan G restoration because tire size has a major effect on both visual authenticity and mechanical compatibility. A prewar car can look noticeably different when the tire diameter or sidewall profile falls outside the proportions associated with its era.
Beyond appearance, the right fitment helps preserve steering clearance, fender relationship, and the car’s intended stance. Even when a Jordan has been restored before, it is still wise to confirm the wheel dimensions and read the current tire markings rather than relying on assumption. That extra step helps keep the finished car cohesive and avoids introducing a tire that looks or fits out of character.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1930 Jordan G?
Yes, modifications can affect tire fitment on a 1930 Jordan G, even when the car still appears largely original. Changes to wheels, suspension components, ride height, brake hardware, or bodywork can alter the space available for either 30X6.00 or 6.00-18 tires.
A collector car that has passed through several owners may carry changes made decades ago, so it pays to inspect rather than assume. Check for non-original wheel widths, altered offsets, shifted axle position, and signs of rubbing at the fenders or steering stops. Those factors become especially important before changing from one accepted size format to the other on a vehicle of this age.
What should I inspect before driving a 1930 Jordan G on new tires?
Before driving a 1930 Jordan G on new tires, inspect the wheels, valve stems, mounting surfaces, and overall tire condition after installation. The tire should seat evenly, hold air properly, and clear the fenders, suspension, and steering components throughout the range of motion.
It also makes sense to look at the rest of the car with the same care. Steering linkage, wheel bearings, brakes, and suspension condition all influence how an older car feels once fresh tires are installed. A short, low-speed shakedown drive is a smart next step, followed by another look for contact marks, pressure loss, or anything that suggests the fitment needs adjustment.
How should tires on a collector 1930 Jordan G be maintained?
Tires on a collector 1930 Jordan G should be maintained with regular pressure checks, visual inspections, and careful storage habits. Because many vintage cars spend long periods parked, age and storage damage can become as important as tread wear.
Inspect for sidewall cracking, weather checking, bulges, cuts, flat spotting, and slow air loss before road use. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect the rubber over time. During the driving season, periodic checks of pressure and overall condition are worthwhile even on low-mileage cars, since collector vehicles often age out their tires before they wear them out.
