1927 Locomobile 90 Tires

The 1927 Locomobile 90 uses two primary tire sizes: 33X6.75 and 700-21, both in bias-ply construction. These are not two versions of the same size in a modern sense. They represent different tire-sizing systems and different wheel arrangements, so the correct choice depends on the actual setup on the car.

The most important next step is confirming wheel diameter before comparing tires. A 700-21 tire belongs on a 21-inch rim, while 33X6.75 follows an older diameter-by-section format tied to a different wheel. On a collector car that may have been restored or altered decades ago, checking the mounted wheel and existing tire size prevents ordering the right-looking tire in the wrong fitment.

A 1927 Locomobile 90 can use more than one rim diameter depending on which tire size is on the car. The 700-21 size uses a 21-inch rim, while 33X6.75 is associated with a 5.0-inch rim diameter in the tire dimensions for this fitment. Those two sizes should be treated as separate wheel-and-tire paths.

Wheel confirmation matters more here than on many later vehicles because the tire formats are from different eras of sizing practice. Measure the actual wheel, inspect the current tire markings, and compare the rim to the intended tire’s width requirements before moving forward. That simple check helps avoid clearance problems, mounting issues, and a mismatch between the car’s current wheels and the tire selected.

On a 1927 Locomobile 90, 700-21 is a numeric bias-ply tire size. The 700 refers to an approximate nominal section width of 7.00 inches, and the 21 refers to the rim diameter in inches. It is a traditional prewar-era sizing convention and one of the primary tire fitments used on this car.

Understanding that format helps when comparing available 700-21 tires because the real differences are not in basic fitment alone. Brand, tire series, sidewall styling, and approved rim-width range can all vary within the same size. Once the car is confirmed to use the 21-inch wheel setup, those details become the meaningful factors in choosing a tire that suits both appearance and use.

Start with the basics: the car must actually use the 700-21 wheel setup, and the tire should remain bias-ply to match the primary fitment. From there, selection comes down to how the tire presents visually and how its specifications align with the wheel. Available 700-21 choices differ by brand, series, sidewall treatment, rim-width range, weight, and in some cases load rating.

A restoration-focused car may lean toward a traditional blackwall or a more formal whitewall presentation, while a touring-minded owner may spend more time comparing wheel compatibility and product details. It is also worth checking whether the wheel width on the car matches the tire’s intended range. That extra step is especially useful on older vehicles that may have had replacement wheels fitted at some point.

For the 1927 Locomobile 90, available 700-21 tires include blackwall, wide whitewall, and double-whitewall sidewall treatments. Those choices can change the visual character of the car dramatically even when the tire size remains the same. On a formal luxury automobile from the late 1920s, sidewall style is often one of the biggest appearance decisions in the entire tire purchase.

The right look depends on how the car is being presented rather than on a single universal answer. Blackwalls offer a restrained traditional appearance, while wide whitewall and double-whitewall styles create a more dressy period-style look. If originality is a major concern, compare the tire choice with period photos, marque references, or restoration documentation so the sidewall treatment complements the car’s overall presentation.

The 700-21 size for the 1927 Locomobile 90 is available from Firestone, Michelin, Lester, and Excelsior. Those choices span several series, including Firestone Balloon, Michelin Double Rivet, Lester Classic Bias Ply, and Excelsior Comp H. Each keeps the car within a bias-ply fitment while giving the owner different approaches to appearance and wheel compatibility.

Brand choice should be considered alongside the exact product details rather than by name alone. Some tires differ in sidewall style, some include stated load capacity, and some call for different rim-width ranges. Comparing those points against the car’s wheels and the desired presentation usually tells the owner more than brand preference by itself, especially on a specialty vehicle from this era.

A period-style approach for a 1927 Locomobile 90 starts with keeping the car in its correct primary bias-ply size and matching the tire to the wheel setup actually on the vehicle. If the car uses 700-21 tires, the available choices include several traditional series and sidewall treatments that suit a restoration-minded presentation. The goal is to preserve the visual scale and character expected on a late-1920s luxury automobile.

Appearance then becomes the deciding factor within the correct fitment. Blackwall tires create a restrained formal look, while whitewall options can add a more prominent period-style statement. When authenticity matters beyond general era appearance, compare the final tire choice with marque-club guidance, period photos, or restoration records so the tire complements the way the car is being presented.

Correct tire fitment matters a great deal on a 1927 Locomobile 90 because tire size influences more than just drivability. It affects stance, wheel proportion, sidewall height, and the overall visual balance of a large late-1920s car. Since this model uses two distinct bias-ply fitment paths, choosing the wrong size system can change both the look of the car and the wheel compatibility.

Restoration decisions should begin with the actual wheels on the vehicle and the type of presentation being pursued. A tire that is right in one wheel arrangement may be completely wrong for the other. Taking time to confirm size, rim diameter, and sidewall style helps the finished car look coherent and avoids the common problem of a well-restored vehicle sitting incorrectly on mismatched tires.

Yes, modifications can affect tire fitment on a 1927 Locomobile 90, especially because this car can be encountered with more than one wheel-and-tire arrangement. Replacement wheels, changed rim widths, brake updates, suspension work, or body adjustments can all influence what tire size can be mounted and how much clearance remains. That is particularly important when dealing with tall bias-ply tires on an older chassis.

A car that has been restored long ago may not still match its earlier setup, so a visual inspection is worthwhile before ordering tires. Measure the wheel diameter, verify width, and look at clearance around fenders, steering components, and suspension travel. On a specialty car of this age, small changes in hardware can have a larger effect on tire selection than the model name alone suggests.

Before driving a 1927 Locomobile 90 on new tires, inspect the wheels, valve hardware, and overall mounting condition, then confirm that the tires are inflated appropriately for their application. It is also smart to check for proper bead seating, secure fasteners, and any obvious interference at full steering lock. On a collector vehicle, fresh tires deserve a full once-over before the first road miles.

The rest of the car should be checked with the same care. Look over suspension wear, steering play, brake condition, and any signs that the car sits unevenly, since those issues can affect how a new tire behaves. After a short initial drive, recheck pressure and inspect for rubbing or unusual scuffing. Catching those details early helps protect both the tires and the vehicle.

Tires on a collector 1927 Locomobile 90 should be maintained with regular pressure checks, routine visual inspection, and careful storage habits. Bias-ply tires on low-use antique vehicles can age out long before they wear out, so sidewall cracking, cuts, bulges, flat spotting, and persistent air loss deserve attention even if the tread still looks serviceable. Occasional movement and clean, dry storage conditions also help.

Long periods of inactivity can be harder on antique tires than modest road use. Keep the car away from prolonged sunlight, excess heat, moisture, and ozone sources such as electric motors or compressors. Before any longer outing, inspect each tire closely and verify that the wheel hardware remains sound. A 1927 luxury car places a lot of visual and mechanical responsibility on its tires, so neglect shows quickly.