Dodge 8 Cyl. Tires

The Dodge 8 Cyl. was part of Dodge's early-1930s move into smoother, more powerful multi-cylinder motoring, giving buyers a substantial American car at a moment when engineering and styling were changing quickly. A 1931 Dodge 8 Cyl. sits squarely in the pre-war era, where correct tire choice matters not just for appearance, but for ride height, steering feel, and overall road manners. Tire selection is simpler here than on many longer-running models because the year range is short, but construction type, sidewall style, and proper rim match still matter. Before choosing a tire for a Dodge 8 Cyl., confirm that the car still carries its correct 18-inch wheels and bias-ply type fitment.

Dodge 8 Cyl. Tire Size Guide

550-181931

The Dodge 8 Cyl. uses one tire size across its 1931 production run: 550-18. This is a numeric bias-ply size, where 5.50 refers to the nominal section width in inches and 18 is the wheel diameter in inches. Available products for this size use 18-inch rims, with listed rim widths ranging from 3 inches up to 4.5 inches depending on the tire. All products in this fitment are bias-ply designs from Excelsior, Firestone, BFGoodrich, and Michelin, with several sidewall styles available. A tube is required.

Dodge 8 Cyl. Tires by Year

The year listing for Dodge 8 Cyl. lets you match the correct tire size to the specific production year shown in the accordion below. Because this model span is limited to 1931 and one listed size, the main check is that the car still carries its correct 18-inch wheels. These listings cover a short pre-war production run, so confirm the fitment against original vehicle paperwork or a marque specialist if the car has been restored or modified.

Best Dodge 8 Cyl. Tires for Sale

Seven products from four brands are available for Dodge 8 Cyl. fitment in 550-18. Options include blackwall, wide whitewall, and double-whitewall styles, so confirm the correct size and 18-inch rim diameter before selecting.

550-18 Products

These are the available products for 550-18.

Bias Ply

Excelsior Comp H | 550-18

Excelsior - Comp H

SidewallBlackwall
Rim Diameter18 in
Rim Width4 in
Weight18 lb
Max Load—
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Bias Ply

Firestone | 550-18

Firestone - Firestone Classic Bias Ply

SidewallBlackwall
Rim Diameter18 in
Rim Width3.25 in
Weight19 lb
Max Load1125@32 psi
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Bias Ply

BFGoodrich 3.00 Inch Whitewall | 550-18

BFGoodrich - Silvertown Classic Bias Ply

SidewallWide Whitewall
Rim Diameter18 in
Rim Width3 in
Weight23 lb
Max Load1000@32 psi
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Bias Ply

Firestone 3.25 Inch Double Whitewall | 550-18

Firestone - Firestone Classic Bias Ply

SidewallDouble-Whitewall
Rim Diameter18 in
Rim Width3.25 in
Weight23 lb
Max Load1125@32 psi
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Bias Ply

Michelin Double Rivet | 550-18

Michelin - Double Rivet

SidewallBlackwall
Rim Diameter18 in
Rim Width3.00 - 4.50 in
Weight18 lb
Max Load—
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Bias Ply

BFGoodrich | 550-18

BFGoodrich - Silvertown Classic Bias Ply

SidewallBlackwall
Rim Diameter18 in
Rim Width3 in
Weight20 lb
Max Load1000@32 psi
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Bias Ply

Firestone 3.25 Inch Whitewall | 550-18

Firestone - Firestone Classic Bias Ply

SidewallWide Whitewall
Rim Diameter18 in
Rim Width3.25 in
Weight21 lb
Max Load1125@32 psi
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Frequently Asked Questions

The FAQ below focuses on the questions that matter most for Dodge 8 Cyl. fitment, including what 550-18 means, whether tubes are required, which brands and sidewall styles are available, and how to care for bias-ply tires on a low-use pre-war car.

Size Basics & Fitment

The Dodge 8 Cyl. uses 550-18 for the 1931 model year. All available products in this fitment are built for an 18-inch rim, and the cataloged examples show bias-ply construction throughout. Within that size, rim width listings vary by product, with examples from 3 inches to 4.5 inches.

That means the first step is not choosing between multiple diameters, but making sure the car still wears its correct 18-inch wheels and has not been converted during an earlier restoration. Once the wheel size is confirmed, the remaining choice is usually sidewall style, brand preference, and how strictly period-correct you want the finished look to be.

A 550-18 marking on a Dodge 8 Cyl. tire is a numeric bias-ply size. The 5.50 figure is the nominal section width in inches, while the 18 identifies the wheel diameter in inches. In the available Dodge 8 Cyl. fitment range, every 550-18 product is a bias-ply tire intended for an 18-inch rim.

Modern buyers sometimes expect a metric-style code with aspect ratio information, but older American sizing is much simpler and more period-specific. When replacing tires on a Dodge 8 Cyl., match the full 550-18 size marking, then confirm the actual wheel diameter and appropriate rim width so the tire profile and stance stay in line with the car's era.

Yes, Dodge 8 Cyl. fitment in 550-18 should be treated as a tube-type application. The listed products are all bias-ply tires in a pre-war numeric size, which is the traditional combination where an inner tube is required. That requirement is part of the tire system, not just an accessory choice.

When a Dodge 8 Cyl. is being refitted after years of storage or restoration, tubes and related components deserve the same attention as the outer tires. Reusing old tube hardware can undermine an otherwise correct installation, so owners should inspect the wheel condition carefully and make sure the complete assembly is suitable for continued collector-car use.

Buying the Right Tire

For a 1931 Dodge 8 Cyl., the listed tire size is 550-18. That gives you a clear starting point: a numeric bias-ply tire for an 18-inch wheel. Because all cataloged Dodge 8 Cyl. products stay within that same basic fitment, the key question is whether the car still has its original wheel diameter and suitable rim width.

The best practice is to check the sidewall marking on any surviving tire, inspect the wheel itself for diameter, and compare the result with factory literature or a knowledgeable Dodge specialist. That extra verification matters most on cars that have changed hands many times, since pre-war restorations sometimes substitute wheels or tires that look plausible but are not actually correct.

Dodge 8 Cyl. tires in 550-18 are available in blackwall, wide whitewall, and double-whitewall styles. The product range includes straightforward blackwall options as well as more decorative white sidewall treatments from period-style brands. Those visual differences do not change the listed size, but they do change the car's presentation.

For a Dodge 8 Cyl. restoration, sidewall choice should reflect how formal or sporting you want the finished car to appear and how closely you are following a specific restoration theme. Blackwalls generally suit a restrained pre-war look, while whitewall variations create a more dressed appearance that can complement higher-trim or show-oriented builds.

Four brands appear in the Dodge 8 Cyl. fitment range: Excelsior, Firestone, BFGoodrich, and Michelin. All are offered in the same 550-18 size, but they represent different period-style series and sidewall presentations. Firestone and BFGoodrich each appear in more than one sidewall treatment, while Excelsior and Michelin add further period-correct variety.

That brand spread gives Dodge 8 Cyl. owners room to choose between a more utilitarian blackwall look, a classic whitewall presentation, or a series that matches the tone of a careful restoration. The practical step is to narrow the choice by appearance first, then compare the rim width compatibility and construction style within the same 550-18 fitment.

The Dodge 8 Cyl. is offered in several tire series within 550-18, including Excelsior Comp H, Firestone Classic Bias Ply, BFGoodrich Silvertown Classic Bias Ply, and Michelin Double Rivet. All of them remain bias-ply designs for 18-inch wheels, but the series names reflect different tread families and period-style presentations rather than a change to radial construction.

For a Dodge 8 Cyl. owner, that means the decision is less about basic fitment and more about the restoration character you want the car to carry. A straightforward blackwall touring look, a prominent whitewall treatment, or a particular vintage tread style can all shift the finished appearance while still keeping the tire within the proper 550-18 pre-war format.

Maintenance & Longevity

A Dodge 8 Cyl. should be stored in a cool, dry, dark environment with the tires kept away from sunlight, ozone sources, and prolonged contact with petroleum products. Bias-ply tires on pre-war cars benefit from clean floors, stable inflation, and minimizing long periods of heavy static load in one position.

If the Dodge 8 Cyl. will sit for extended stretches, move it periodically or use methods that reduce flat-spotting and sidewall stress. Owners who show the car occasionally but drive it sparingly should make tire care part of seasonal maintenance, because collector tires often age out long before tread wear becomes the limiting factor.

Tires on a Dodge 8 Cyl. should be inspected before each drive and given a more thorough review several times during the season. On a pre-war bias-ply setup, small issues such as cracking, bead disturbance, impact damage, or irregular shape can matter more than mileage because the car may spend long periods parked.

A careful inspection routine should include sidewalls, tread surface, valve area, wheel condition, and inflation consistency across all four corners. If a Dodge 8 Cyl. sees parade, tour, or show-field use, a specialist familiar with early tire construction is worth involving, since unusual wear or casing changes are easier to catch early than after a failure.

Tires on a Dodge 8 Cyl. should be replaced when age, cracking, hardening, deformation, repeated air loss, or other structural changes begin to appear, even if the tread still looks usable. On a low-mileage collector car, calendar age and storage history are often more important than tread depth, especially with pre-war bias-ply construction.

A Dodge 8 Cyl. owner should think of tire replacement as a condition-based decision guided by inspection rather than a mileage interval. If the car has spent years in static display or storage, the safest approach is to treat visible tread as only one part of the picture and evaluate the entire casing before deciding that an older tire remains roadworthy.

Restoration & Authenticity

The Dodge 8 Cyl. fitment range here centers on 550-18 bias-ply tires for 1931, but several period-style series are available within that size, including Excelsior Comp H, Firestone Classic Bias Ply, BFGoodrich Silvertown Classic Bias Ply, and Michelin Double Rivet. That indicates there is more than one historically appropriate style path within the same basic size.

For a precise restoration of a Dodge 8 Cyl., the final word should come from original sales literature, surviving factory paperwork, or recognized Dodge marque references rather than from size alone. The tire size may be straightforward, but the most authentic tread family and sidewall treatment can vary depending on the exact restoration goal.

Yes, correct tire fitment can influence both presentation and judging on a Dodge 8 Cyl. A proper 550-18 bias-ply tire preserves the car's stance, wheel-to-tire proportion, and pre-war visual character, while an incorrect size or modern-looking substitute can alter the appearance enough to stand out immediately to experienced judges and collectors.

Owners restoring a Dodge 8 Cyl. for show use should pay attention not only to size, but also to sidewall style and overall period impression. Marque clubs, restoration handbooks, and photos of well-established reference cars are valuable when deciding whether a blackwall or whitewall treatment best supports the level of authenticity you want the car to present.

Dodge 8 Cyl. tires are available in blackwall, wide whitewall, and double-whitewall form within the 550-18 size. Any of those can suit a pre-war restoration theme, but they create different visual impressions: blackwall is more restrained, while whitewall treatments produce a more formal and decorative period look.

Choosing the right sidewall for a Dodge 8 Cyl. comes down to how the specific car is being restored and what historical presentation you are aiming to match. If the goal is judged authenticity, compare the planned tire appearance with period photographs, trim level expectations, and guidance from Dodge-focused restorers before settling on the final style.

Safety & Road Use

A properly installed, correctly sized 550-18 bias-ply tire can be suitable for operating a Dodge 8 Cyl. on public roads within the limits of a pre-war collector car. Safety depends on much more than tread appearance, including tire age, storage history, tube condition, wheel integrity, steering condition, and the overall mechanical readiness of the car.

A Dodge 8 Cyl. should be driven with the understanding that early-1930s chassis, brakes, and tire behavior differ markedly from modern vehicles. Even with fresh tires, owners should approach road use conservatively, leave generous stopping distance, and make sure the whole vehicle has been reviewed as a complete system rather than assuming the tires alone determine safety.

Before driving a Dodge 8 Cyl., check tire inflation, visible sidewall condition, tread integrity, valve area, and any signs of casing distortion or air loss. On a pre-war bias-ply setup, the inspection should also include wheel condition, lug security, and whether the tires are seated properly after periods of storage.

That walk-around is especially important on a Dodge 8 Cyl. that only comes out for occasional tours, local shows, or parade duty. Cars that sit can develop age-related issues without accumulating mileage, so a short pre-drive inspection is one of the simplest ways to catch problems before they become roadside failures.

A Dodge 8 Cyl. on period-style 550-18 bias-ply tires should be driven at moderate, mechanically sympathetic speeds that suit both the tires and the capabilities of an early-1930s automobile. The appropriate pace is governed by the whole car's braking, steering, suspension, and tire condition rather than by engine power alone.

In practice, that means treating a Dodge 8 Cyl. as a collector car rather than a modern highway machine, even when it feels smooth and willing. Owners should build speed gradually, avoid abrupt lane changes, and keep enough margin for the distinct tracking and response characteristics that bias-ply tires bring to a pre-war chassis.