By 1927, Jordan was an established independent American marque known for stylish, upscale automobiles that aimed to stand apart from the mass-market field. The [YEAR] [MAKE] lineup centered here on the Line-8 family, with distinct tire sizing between the standard Line-8 and the larger, more imposing Gt Line-8. Across these two models, four bias-ply sizes appear rather than one shared fitment, so the real first step is identifying which model you have and whether you are matching an antique diameter-by-section marking or a later numeric size on the correct rim diameter. Once that is clear, choosing the right tire becomes much more straightforward.
Which Tire Size Is Right for Your 1927 Jordan
Four tire sizes appear across 1927 Jordan vehicles, and they vary by model rather than being shared across the full range. The main decision is confirming whether your car is a Line-8 or a Gt Line-8 first, then matching the correct antique or numeric bias-ply size to the proper rim diameter. Understanding that distinction before choosing a product saves time and helps keep the tire matched to the car.
Year(s): 1927|Fit(s): Gt Line-8|Construction: Bias Ply|Rim: 20-in rim
32X6.20 is an antique diameter-by-section size, with 32 indicating overall tire diameter and 6.20 indicating nominal section width, and it is specific to the 1927 Jordan Gt Line-8 rather than the full Jordan range. It is a bias-ply application on a 20-inch wheel. This size is the choice for owners aiming to stay with the antique-format fitment associated with the larger Gt Line-8.
Year(s): 1927|Fit(s): Gt Line-8|Construction: Bias Ply|Rim: 20 in
650-20 is a numeric bias-ply size in which 6.50 denotes nominal section width and 20 denotes the wheel diameter, and it is specific to the 1927 Jordan Gt Line-8 rather than universal across all 1927 Jordan models. Firestone, Denman, and Deka offerings appear in this size, with Blackwall and Wide Whitewall sidewall styles available; the listed products shown here are bias-ply and load details reach as high as 2120 pounds at 60 psi on select Firestone versions. This size suits a Gt Line-8 owner who wants an available numeric-format replacement while staying with period-appropriate bias-ply construction.
Year(s): 1927|Fit(s): Line-8|Construction: Bias Ply|Rim: 18-in rim
30X6.00 is an antique diameter-by-section size, with 30 indicating overall tire diameter and 6.00 indicating nominal section width, and it belongs to the 1927 Jordan Line-8 rather than the Gt Line-8. It is a bias-ply application on an 18-inch wheel. This size is the logical reference point for a restoration-minded Line-8 owner who wants to stay with the earlier style of sizing used on the car.
Year(s): 1927|Fit(s): Line-8|Construction: Bias Ply|Rim: 18-in rim
6.00-18 is a numeric bias-ply size in which 6.00 denotes nominal section width and 18 denotes the wheel diameter, and it is specific to the 1927 Jordan Line-8. It represents the same general era of construction but in the later numeric bias-ply format. A Line-8 owner comparing this size with 30X6.00 should confirm which marking matches the car's existing wheels and restoration goals before moving ahead.
Two Jordan models are covered for 1927, and they do not share the same tire sizes. The practical implication is simple: year and make alone are not enough here, because the Gt Line-8 uses 20-inch tire fitments while the Line-8 uses 18-inch fitments. Select your model below to narrow the fitment history and see the tire choices that apply to that specific Jordan.
1927 Jordan Gt Line-8
The 1927 Jordan Gt Line-8 sat at the more imposing end of the lineup, reflecting Jordan's reputation for style-forward, upper-tier American cars in the late 1920s. Its tires mount on 20-inch rims, and the size choices shown for it span both antique diameter-by-section and numeric bias-ply conventions used during the period.
The 1927 Jordan Line-8 represents the core eight-cylinder Jordan offering of the era, balancing upscale character with the marque's distinctive styling identity. Its tires mount on 18-inch rims, and the fitments listed for it include both an antique diameter-by-section size and a numeric bias-ply equivalent style common to late-1920s cars.
Four products are available across one of the four tire sizes used on 1927 Jordan vehicles. In 650-20, four bias-ply choices appear from Firestone, Denman, and Deka, with Blackwall and Wide Whitewall sidewall styles. Confirm your model and exact size before selecting a tire.
These answers focus on the model-specific tire sizes used across 1927 Jordan cars, the difference between antique and numeric bias-ply markings, available sidewall treatments in 650-20, and the storage habits that matter on a low-use late-1920s automobile.
Size Basics & Fitment
What tire sizes fit 1927 Jordan vehicles?
1927 Jordan vehicles use four sizes across two models. The Jordan Gt Line-8 uses 32X6.20 and 650-20, both on 20-inch rims, while the Jordan Line-8 uses 30X6.00 and 6.00-18, both on 18-inch rims. The available rim width range shown in current product details appears in 650-20, where fitment is listed for 3.00- to 5.00-inch rims.
That means a 1927 Jordan owner should identify the car as either a Line-8 or a Gt Line-8 before worrying about brand or sidewall style. Once the model is confirmed, the next step is matching the wheel diameter and deciding whether the car should wear an antique diameter-by-section marking or a numeric bias-ply marking that still suits the period.
What does 32X6.20 mean on a 1927 Jordan tire?
On a 1927 Jordan, 32X6.20 is an antique diameter-by-section size. The first number, 32, refers to the tire's overall diameter in inches, while 6.20 refers to nominal section width. It is a bias-ply size used on the 1927 Jordan Gt Line-8 and mounts on a 20-inch rim.
That older sizing convention matters because it reads differently from later numeric sizes such as 650-20. If a 1927 Jordan Gt Line-8 still carries wheels or surviving records that reference 32X6.20, that marking is part of the car's period character and is worth preserving when restoration accuracy is part of the goal.
Do all 1927 Jordan models use the same tire size?
No. The 1927 Jordan Gt Line-8 and 1927 Jordan Line-8 use different tire sizes and different rim diameters. The Gt Line-8 uses 20-inch fitments, listed as 32X6.20 and 650-20, while the Line-8 uses 18-inch fitments, listed as 30X6.00 and 6.00-18.
That distinction is more important than sidewall preference or brand at the beginning of the search. A buyer who starts with only the year and make can easily land on the wrong diameter, so the safest path is to confirm the exact model first and then compare the two size markings that belong to that model alone.
Buying the Right Tire
Should I choose 32X6.20 or 650-20 for my 1927 Jordan?
For a 1927 Jordan Gt Line-8, both 32X6.20 and 650-20 are period-appropriate bias-ply fitments tied to that model's 20-inch wheels. The real difference is the style of sizing convention: 32X6.20 uses the older antique diameter-by-section format, while 650-20 uses the later numeric bias-ply format and has current product availability in Blackwall and Wide Whitewall versions.
Owners pursuing a more antique presentation often prefer the diameter-by-section marking because it looks more in step with early tire nomenclature. Owners who want to work from currently listed 650-20 product choices may find the numeric size easier to source and compare, but the right answer still depends on the wheel, the car's existing fitment history, and the restoration direction.
What sidewall styles are available for 1927 Jordan tires?
Among currently listed 1927 Jordan tire options, sidewall style variety appears in 650-20. That size is offered in both Blackwall and Wide Whitewall versions, while the other 1927 Jordan sizes shown here do not have listed sidewall-style options attached to active products.
For a late-1920s Jordan, sidewall choice influences the car's visual character as much as the tire itself. A Blackwall tends to suit a more restrained or utilitarian presentation, while a Wide Whitewall creates a dressier look that many owners associate with premium pre-war American automobiles. Matching the sidewall to the car's trim level, period photographs, or club guidance is a smart final check.
What brands make tires for 1927 Jordan vehicles?
Current 1927 Jordan tire listings in 650-20 include Firestone, Denman, and Deka. All of those offerings are bias-ply, with Firestone available in both Blackwall and Wide Whitewall form, while Denman and Deka appear in Blackwall classic truck-style versions.
Brand choice on a 1927 Jordan often comes down to how the car will be presented and which visual treatment best suits the vehicle. An owner focused on a more passenger-car appearance may lean toward the Firestone options, while someone prioritizing a plain black sidewall in the same size has multiple paths to compare before settling on the final tire.
Fitting & Setup
What rim width do 1927 Jordan tires require?
Rim width guidance is available in the current 1927 Jordan product range for 650-20, where the listed fitment window is 3.00 to 5.00 inches wide on a 20-inch rim. The 1927 Jordan Gt Line-8 sizes mount on 20-inch wheels, and the 1927 Jordan Line-8 sizes mount on 18-inch wheels.
That makes wheel diameter the first hard checkpoint and rim width the next one before mounting. If your 1927 Jordan has replacement wheels, altered rims, or a long restoration history, measuring the actual wheel and comparing it against the tire's approved width range is the most reliable way to avoid mismatch or an awkward sidewall profile.
Can the original 1927 Jordan wheels be used with both tire sizes listed for each model?
Within each 1927 Jordan model, the paired sizes share the same rim diameter. The Gt Line-8 uses 32X6.20 and 650-20 on 20-inch wheels, while the Line-8 uses 30X6.00 and 6.00-18 on 18-inch wheels. That means the two sizes listed for a given model are diameter-compatible at the wheel level.
Wheel diameter compatibility does not automatically answer every fitment question, especially on a car approaching a century old. Before mounting either size on original 1927 Jordan wheels, inspect the wheel condition, verify width where tire specifications are available, and make sure the intended tire matches the type of appearance and stance you want from the finished car.
Maintenance, Storage & Longevity
How should I store a 1927 Jordan when the tires are fitted?
A 1927 Jordan stores best in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, furnaces, and other ozone-producing equipment that can age rubber prematurely. Because every listed 1927 Jordan tire size is bias-ply, long static periods can encourage flat-spotting and can also make sidewall weathering more noticeable if the car sits on one contact patch for months at a time.
Moving the car periodically, slightly adjusting its resting position, or supporting it appropriately during extended storage helps reduce stress on the carcass. Keeping the tires clean, properly inflated, and isolated from petroleum products will do more for long-term preservation than simply covering the car and forgetting about it through the off-season.
How long do tires on a 1927 Jordan typically last?
On a 1927 Jordan, tire age is usually a more important limit than tread wear because collector cars tend to accumulate miles slowly. A sensible rule is to begin close inspection and evaluation once a tire reaches about five to seven years of age and to treat the ten-year mark as a serious replacement consideration, even if the tire still looks presentable.
The date code on the tire is the best starting point, but age alone is not the whole story. Storage conditions, inflation habits, exposure to heat and sunlight, and whether the car has spent long periods parked on the same tires all influence service life, so an older-looking 1927 Jordan tire deserves a careful inspection before it earns more road time.
How often should tires on a 1927 Jordan be inspected?
Tires on a 1927 Jordan should be inspected before every drive, and especially before any tour, parade, or longer highway outing. Look for sidewall cracking, tread separation, cuts, impact damage, uneven wear, and signs that pressure is not being maintained evenly from one tire to the next.
A quick visual check is not enough on an older collector car. Run your hand around the sidewall, confirm valve stem condition, and pay attention to whether the car has developed a new vibration or pull that may point to a tire issue. Catching a problem in the garage is far easier than discovering it after the car has been brought back onto the road.
Restoration & Authenticity
What tires were originally fitted to the 1927 Jordan Gt Line-8?
The 1927 Jordan Gt Line-8 belongs to an era when bias-ply construction was standard, and the sizes associated with it here are 32X6.20 and 650-20 on 20-inch rims. That places the car squarely in the transition period where antique diameter-by-section markings and numeric bias-ply sizing can both be part of the historical conversation.
For a highly accurate restoration, the best approach is to compare the car's surviving wheels, period photos, factory literature, and marque-club knowledge before choosing between those two markings. The key point is that a 1927 Jordan Gt Line-8 should wear a bias-ply tire in the proper 20-inch size family rather than a later-style radial or an incorrect wheel diameter.
Does correct tire fitment matter for showing a 1927 Jordan?
Correct tire fitment matters on a 1927 Jordan because judges and knowledgeable enthusiasts notice size, construction type, and sidewall treatment immediately. A Line-8 shown on 20-inch Gt Line-8 fitments, or a Gt Line-8 shown on 18-inch Line-8 fitments, would stand out as incorrect before anyone even begins looking at smaller details.
Construction and appearance matter as well as diameter. A bias-ply tire in the proper period size family supports the car's late-1920s presentation, while sidewall style should match the look the owner is aiming for and the standards of the event. For marque-specific judging, club references and event rules are the final authority worth consulting before the car goes on the field.
What is the difference between Firestone and Denman 650-20 tires for the 1927 Jordan?
For a 1927 Jordan Gt Line-8 in 650-20, Firestone and Denman differ mainly in presentation and in the amount of published specification detail attached to the current offerings. Firestone appears in both Blackwall and 3.75-inch Wide Whitewall forms, lists a 2120-pound maximum load at 60 psi on the examples shown, and is listed with a 3.00- to 5.00-inch rim width range. Denman appears as a Blackwall Highway Classic Truck bias-ply tire in the same size.
That makes the choice less about fitment category and more about the look and specification package that suits the car. A Jordan owner seeking a dressier sidewall treatment has a Firestone path available, while a plain black 650-20 remains an option through multiple brands. Comparing the exact sidewall style and the wheel on the car is the right way to separate those choices.
Safety & Road Use
Are 1927 Jordan tires safe for highway driving?
A 1927 Jordan can be driven on modern roads when the tires are fresh, correctly sized, properly inflated, and in sound condition, but every listed size for the car is bias-ply. No speed ratings are shown in the currently listed 1927 Jordan products here, so the broader limit on highway use often comes from the vehicle's age, braking ability, steering design, suspension condition, and overall mechanical health rather than from an aggressive tire speed category.
That means a well-sorted 1927 Jordan should be driven with the pace and margin appropriate to a late-1920s automobile. Smooth inputs, conservative cruising, and extra stopping distance matter as much as the tire itself, especially on roads where surrounding traffic moves faster than the car was ever originally expected to sustain.
What inflation pressure should I use for 1927 Jordan tires?
Inflation pressure on a 1927 Jordan should start with the vehicle's original guidance for the specific model and tire size, then be checked against the tire manufacturer's published limits for the exact product you are using. In current 650-20 offerings, listed load information reaches 2120 pounds at 60 psi on select Firestone versions, but that figure is a product rating point rather than a blanket instruction for every 1927 Jordan tire.
Pressure should never be copied casually from one size to another, especially when the year and make include both 18-inch and 20-inch applications and both antique and numeric size markings. The right pressure is the one that matches the exact tire, the car's weight distribution, and the intended use, confirmed before the car goes back into service.
What should I check before taking a 1927 Jordan on a longer drive?
Before a longer drive in a 1927 Jordan, inspect each tire for cracking, cuts, bulges, unusual wear, and proper inflation, and do the same for the spare. Check valve stem condition, make sure the wheel hardware is secure, and look for any sign that the car has been sitting on flat-spotted or weathered bias-ply tires for too long.
The tires are only one part of a sensible pre-tour routine on a late-1920s car. A 1927 Jordan also deserves a broader once-over that includes brakes, steering, wheel bearings, fluids, and the basic tools needed for roadside service. Tires that look acceptable in the garage should still be rechecked after the first few miles once they have warmed and begun working again.