The 1929 Jordan G comes from the late brass-to-classic transition period, when American automobiles were moving toward more modern road manners while still carrying many design cues of the open-road touring era. For collectors, that gives this Jordan a distinctly prewar character that deserves careful tire selection rather than a casual modern substitute. The 1929 Jordan G uses bias-ply fitments in 30X6.00 and 6.00-18, so the first step is confirming which of those sizes matches the car’s actual wheel and tire setup. Once that is settled, the decision centers on maintaining the proper period-style look and checking wheel compatibility before putting the car back into regular road use.
Which Tire Size Is Right for The 1929 Jordan G
The 1929 Jordan G uses two primary tire sizes, both in bias-ply construction, and choosing correctly starts with identifying the car’s exact wheel and tire setup. Because one size is expressed in an antique diameter-by-section format and the other as a numeric bias-ply size on an 18-inch rim, confirming the wheel diameter and the size already on the car is the most important first step before comparing tire choices.
30X6.00 is an antique diameter-by-section size, meaning the first number refers to an approximate 30-inch overall tire diameter and the second refers to a nominal 6.00-inch section width. It is a bias-ply fitment that suits the period character of a 1929 Jordan G and reflects the sizing language commonly seen on earlier vehicles and transitional prewar applications. Buyers usually look at this size with restoration appearance in mind, since the visual profile and construction style are part of the vehicle’s overall presentation. Before selecting it, compare the mounted wheel and current tire markings carefully so the car’s existing setup matches this older sizing format.
6.00-18 is a numeric bias-ply size in which 6.00 indicates nominal section width in inches and 18 identifies the rim diameter. On a 1929 Jordan G, this format points to a more familiar vintage bias-ply sizing convention and ties tire selection directly to an 18-inch wheel. This size is the practical choice when the car is already equipped for 18-inch fitment and the goal is to stay with the proper construction type for a prewar automobile. Checking the wheel diameter, wheel condition, and any existing tire markings will help separate this fitment from the older 30X6.00 designation.
The covered 1929 Jordan G sub-model uses the same two primary bias-ply tire sizes, so fitment is straightforward once the car’s existing wheel and tire setup is confirmed. Checking the exact sub-model still matters because it keeps the buyer focused on period-appropriate construction and the right sizing format for the wheels on the car.
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1929 Jordan G 8 Cyl.
The 1929 Jordan G 8 Cyl. uses the same pair of primary bias-ply fitments, so the real question is not trim-based variation but which size is actually mounted on the car. Tire selection should focus on matching the wheel setup already in place and preserving the traditional look expected on a late-1920s automobile.
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
Owners researching 1929 Jordan G tires usually need to sort out the difference between 30X6.00 and 6.00-18, confirm the wheel setup, and choose a bias-ply tire that suits both restoration appearance and safe road use.
Tire Size & Fitment
What tire size fits a 1929 Jordan G?
The 1929 Jordan G uses two primary bias-ply tire sizes: 30X6.00 and 6.00-18. Those are not interchangeable names for the same thing in buyer-facing terms, so the correct choice starts with matching the size format and wheel setup already on the car.
A Jordan that still has its original-style wheels may already show the answer on the tire sidewall or wheel measurement. Looking at the existing tire markings, confirming the wheel diameter, and checking that both sides of the axle match will help avoid choosing the wrong vintage size before replacement.
What size rim does a 1929 Jordan G use?
The 1929 Jordan G is associated with an 18-inch rim where the 6.00-18 tire size is concerned. That size clearly identifies an 18-inch wheel, which makes rim confirmation especially important when comparing it with the older 30X6.00 fitment format.
Since prewar cars are sometimes altered over time, measuring the wheel and checking the tire sidewall is still worthwhile before ordering replacement tires. A car that has been re-wheeled, restored at different times, or fitted with mixed components can look correct at a glance while carrying a different setup than expected.
What does 30X6.00 mean on a 1929 Jordan G?
On a 1929 Jordan G, 30X6.00 is an antique diameter-by-section tire size. The 30 refers to the approximate overall tire diameter in inches, while 6.00 refers to the nominal section width, making it a distinctly older sizing convention than a modern radial marking.
That matters because the number sequence does not identify the wheel in the same direct way as a size like 6.00-18. Anyone replacing this tire should inspect the actual wheel and compare the existing mounted setup carefully, rather than assuming that similar-looking vintage numbers describe the same fitment.
Choosing the Right Tire
What should I consider when choosing a 30X6.00 or 6.00-18 tire for a 1929 Jordan G?
Start with the correct primary size on the car, because the 1929 Jordan G uses both 30X6.00 and 6.00-18 in bias-ply construction. Once the size is confirmed, the main priorities are maintaining the proper vintage construction, matching the wheel setup, and selecting a tire that suits the car’s restoration or touring use.
Prewar vehicles reward careful inspection before replacement. Verify the wheel diameter, look at the current sidewall markings, inspect the condition of the rims, and make sure the car does not have mixed wheels from an earlier repair or restoration. That approach keeps tire choice centered on fitment rather than guesswork.
How do I choose between the available 30X6.00 and 6.00-18 tires for a 1929 Jordan G?
Choosing between 30X6.00 and 6.00-18 is really a matter of identifying which size your 1929 Jordan G is set up to use. Both are bias-ply fitments, but they belong to different vintage sizing conventions, so the right selection depends on the wheel and tire combination already on the vehicle.
A good comparison starts at the car, not the catalog. Read the sidewall on the old tire, measure the wheel if needed, and inspect whether all four corners share the same setup. That is especially useful on older collector cars, where decades of repairs can leave a vehicle wearing a different size than expected.
Why is confirming the existing wheel setup so important on a 1929 Jordan G?
Confirming the existing wheel setup matters because the 1929 Jordan G is tied to two different bias-ply tire size formats, 30X6.00 and 6.00-18. Even though both belong to the same vehicle, they communicate fitment differently and should not be treated as casual substitutes without checking the actual wheels.
Older restorations, replacement wheels, and long service histories can all change what is currently on the car. Measuring the wheel, inspecting rim condition, and comparing the tire markings already mounted will help avoid a mismatch that could affect installation, appearance, and clearance once the car is back on the road.
Restoration & Appearance
Which tire should I choose for a period-style 1929 Jordan G?
A period-style 1929 Jordan G should stay with the primary bias-ply size that matches the car’s actual wheel setup, either 30X6.00 or 6.00-18. Bias-ply construction helps preserve the visual character expected on a late-1920s automobile and keeps the tire presentation aligned with the vehicle’s era.
For a preservation-minded or restoration-oriented car, appearance and fitment usually matter as much as simple drivability. Matching the tire size already suited to the wheels, checking the stance the car currently carries, and comparing against marque references or restoration photos can help keep the finished result visually coherent.
Does correct tire fitment matter for a 1929 Jordan G restoration?
Correct tire fitment matters a great deal on a 1929 Jordan G restoration because the tire has a strong effect on stance, wheel presentation, and overall authenticity of appearance. Using the proper bias-ply size format for the car’s actual wheel setup helps the finished vehicle look consistent with its prewar design language.
That does not mean every restored Jordan was originally delivered with the same brand or exact visual treatment, so buyers focused on exact originality should also consult marque-specific references. Even so, starting with the right size family and construction is the most important first step toward a convincing period-style result.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1929 Jordan G?
Yes, modifications can affect tire fitment on a 1929 Jordan G. Changes such as replacement wheels, altered suspension height, brake updates, or body and fender work can all influence which vintage tire size is appropriate and how much clearance remains once the tire is mounted.
That is especially important on an older collector car where changes may have been made decades ago. A careful owner should inspect wheel diameter, compare wheel width side to side, and check steering and fender clearance at full travel before assuming the current setup still matches the car’s original-style tire requirements.
What should I inspect before driving a 1929 Jordan G on new tires?
Before driving a 1929 Jordan G on new tires, inspect the wheels, valve stems, and tire seating, then check pressure and confirm that all tires are the same size intended for the car’s setup. It is also wise to look over suspension, steering components, and brake condition on a vehicle of this age.
A short test drive should include listening for rubbing, feeling for vibration, and rechecking pressure afterward. Collector cars that sit for long periods can have hidden issues unrelated to the tires themselves, so a fresh installation is a good moment to inspect the whole running gear before regular road use.
How should 30X6.00 or 6.00-18 tires on a collector 1929 Jordan G be maintained?
Maintain 30X6.00 or 6.00-18 tires on a collector 1929 Jordan G with regular pressure checks, visual inspection, and careful storage habits. Even when tread wear is minimal, older collector-car tires should be watched for cracking, bulges, cuts, flat spotting, and any signs of slow air loss.
Storage conditions matter almost as much as mileage on a seldom-driven prewar car. Keeping the Jordan away from prolonged sunlight, ozone sources, moisture, and excessive heat will help protect the tires, and periodic movement or proper support during long storage can reduce stress on both the tires and the wheels.
