Mercury Marauder Tires

Mercury Marauder is one of those nameplates that spans very different moments in American performance history, appearing here first in the late 1960s and then again in the early 2000s. That broad production gap makes tire selection less straightforward than the badge alone suggests, because the earlier Mercury Marauder uses period 15-inch alphanumeric bias-ply sizing while the later car moves to modern 18-inch metric radial sizing. The result is not just a change in size code, but a complete change in construction style, wheel diameter, and fitment logic. Start by confirming whether your Mercury Marauder carries 15-inch or 18-inch wheels before narrowing down the correct tire size.

Mercury Marauder Tire Size Guide

Mercury Marauder production changed from 15-inch to 18-inch wheels, with the later rim diameter first appearing in 2003. Across the 1969 to 2004 span, this model group uses 5 distinct tire sizes, split between period alphanumeric bias-ply sizing and modern metric radial sizing. That year break matters because a 1969–1970 Mercury Marauder and a 2003–2004 Mercury Marauder do not share the same wheel diameter or tire construction type.

H70-151969-1970Alphanumeric bias-ply

H70-15 fits Mercury Marauder applications in 1969 and also appears among the listed 1970 fitments. The H indicates the tire's width class, 70 is the aspect series, and 15 is the rim diameter in inches; because there is no R in the code, it is a bias-ply format. Choose H70-15 when your car is one of the Marauder applications listed for that size and verify the actual wheel before purchase, since 1970 also carries other 15-inch sizes.

G78-151970Alphanumeric bias-ply

G78-15 is one of the 1970 Mercury Marauder sizes and is offered in 15-inch bias-ply form. The G identifies the width and load class, 78 is the series designation, and 15 is the rim diameter in inches; without an R in the code, this is a bias-ply tire size. Choose G78-15 for a 1970 Mercury Marauder that specifically calls for this narrower 15-inch fitment, and a tube is required.

H78-151970Alphanumeric bias-ply

H78-15 is another 1970 Mercury Marauder size and also uses a 15-inch rim. The H marks the width and load class, 78 is the series designation, and 15 is the rim diameter in inches; because the code does not include an R, it is a bias-ply size. Choose H78-15 when your 1970 Mercury Marauder uses this 15-inch application and you want a period-style bias-ply fitment, and a tube is required.

235/50R182003-2004Metric radial

235/50R18 fits Mercury Marauder applications in 2003 and 2004 and is used on 18-inch wheels. The 235 is the section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. Choose 235/50R18 when your 2003–2004 Mercury Marauder uses the narrower of the two listed 18-inch sizes, paying attention to sidewall style if you want blackwall, redline, or RWL appearance.

245/55R182003-2004Metric radial

245/55R18 is listed for Mercury Marauder applications in 2003 and 2004 and also mounts on an 18-inch rim. The 245 is the section width in millimeters, 55 is the aspect ratio, R means radial construction, and 18 is the rim diameter in inches. Choose 245/55R18 when your 2003–2004 Mercury Marauder is set up for this wider and taller 18-inch fitment rather than the 235/50R18 alternative.

Buyers with a 1970 Mercury Marauder must identify the specific configuration, since more than two sizes are listed for that year; confirm the specific trim level or body style before selecting a size.

Mercury Marauder Tires by Year

Mercury Marauder production changed from 15-inch to 18-inch wheels in 2003, so confirm which rim diameter the specific car carries before selecting a tire. In 1970, more than two sizes are listed, which points to a configuration split within that model year. The year listing is the quickest way to narrow the car to the correct size family before comparing sidewall style and construction.

Best Mercury Marauder Tires for Sale

Available Mercury Marauder tires span 4 brands and 13 products across G78-15, H78-15, 235/50R18, and 245/55R18 sizes. Sidewall choices include blackwall, wide whitewall, redline, and RWL, so confirm the correct size and rim diameter before selecting.

G78-15 Products

These are the available products for G78-15.

Bias Ply

Coker Classic 3.25 Inch Whitewall | G78-15

Coker Classic - Coker Classic Bias Ply

SidewallWide Whitewall
Rim Diameter15 in
Rim Width5.00 - 7.00 in
Weight26 lb
Max Load1620@32 psi
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Bias Ply

Coker Classic 2.75 Inch Whitewall | G78-15

Coker Classic - Coker Classic Bias Ply

SidewallWide Whitewall
Rim Diameter15 in
Rim Width5.00 - 7.00 in
Weight26 lb
Max Load1620@32 psi
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Military & Truck

STA Super Traxion | G78-15

STA - Super Traxion

SidewallBlackwall
Rim Diameter15 in
Rim Width—
Weight32 lb
Max Load—
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H78-15 Products

These are the available products for H78-15.

Bias Ply

Coker Classic 3.00 Inch Whitewall | H78-15

Coker Classic - Coker Classic Bias Ply

SidewallWide Whitewall
Rim Diameter15 in
Rim Width5.50 - 7.00 in
Weight28 lb
Max Load1770@32 psi
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Bias Ply

Coker Classic 4.4375 Inch Whitewall | H78-15

Coker Classic - Coker Classic Bias Ply

SidewallWide Whitewall
Rim Diameter15 in
Rim Width5.50 - 7.00 in
Weight28 lb
Max Load1770@32 psi
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Military & Truck

STA Traxion | H78-15

STA - Traxion

SidewallBlackwall
Rim Diameter15 in
Rim Width5.50 - 7.00 in
Weight35 lb
Max Load1830@45 psi
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235/50R18 Products

These are the available products for 235/50R18.

Radial g-Force

BFG g-Force Sport COMP-2 | 235/50ZR18 97W

BFGoodrich - g-Force Sport Comp 2

SidewallBlackwall
Rim Diameter18 in
Rim Width6.5 - 8.5 in
Weight26 lb
Max Load1609@51
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Radial g-Force

BFG g-Force COMP-2 A/S | 235/50ZR18 97W

BFGoodrich - g-Force Comp 2 AS

SidewallBlackwall
Rim Diameter18 in
Rim Width6.5 - 8.5 in
Weight29 lb
Max Load—
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Radial Nitto

Nitto NT555 G2 | 235/50ZR18 XL 101W

Nitto - Nitto NT555 G2

SidewallBlackwall
Rim Diameter18 in
Rim Width6.5-(7.5)-8.5 in
Weight27.86 lb
Max Load1,819 @ 50 psi
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Radial Phenom

BFGoodrich g-Force Phenom T/A | 235/50ZR18 101W

BFGoodrich - g-Force Phenom T/A

SidewallBlackwall
Rim Diameter18 in
Rim Width6.5 - 8.5 inches in
Weight29.01 lb
Max Load1819 lbs at 50 psi
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Radial Tires

235/50ZR18 Pro-Trac Street Pro III | Redline

Pro-Trac - Street Pro III

SidewallRedline
Rim Diameter18 in
Rim Width—
Weight27.86 lb
Max Load—
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Radial Tires

235/50ZR18 Pro-Trac Street Pro III | RWL

Pro-Trac - Street Pro III

SidewallRWL
Rim Diameter18 in
Rim Width—
Weight27.86 lb
Max Load—
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245/55R18 Products

These are the available products for 245/55R18.

Radial Tires

BFGoodrich Redline | 245/55R18

BFGoodrich - Silvertown Radial

SidewallRedline
Rim Diameter18 in
Rim Width—
Weight30 lb
Max Load—
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Frequently Asked Questions

The questions below sort out the big Mercury Marauder tire differences, including the 15-inch to 18-inch wheel change, the split between bias-ply and radial construction, and how to identify the right size when one year carries multiple fitments.

Size Basics & Fitment

Mercury Marauder fitments in this range are H70-15 for 1969 and 1970, G78-15 for 1970, H78-15 for 1970, 235/50R18 for 2003 and 2004, and 245/55R18 for 2003 and 2004. The 1969–1970 sizes use 15-inch rims, while the 2003–2004 sizes use 18-inch rims.

That means the correct tire depends first on model year and then on the specific configuration within that year. A 1970 Mercury Marauder needs extra attention because three sizes are listed, while the 2003–2004 cars require confirming which of the two 18-inch metric radial sizes is actually on the car.

A 1970 Mercury Marauder can use G78-15, H78-15, or H70-15, all on 15-inch wheels. Because those sizes share the same rim diameter but differ in section and series designation, the split points to a configuration difference within the 1970 model range rather than a wheel-diameter change.

The practical takeaway is that year alone is not enough for a 1970 Mercury Marauder. Check the existing tire size, the wheel width, and any original vehicle paperwork or marque references so you can match the car's specific setup instead of choosing only by model year.

Mercury Marauder uses two rim diameters across the years covered here. The 1969 and 1970 fitments are all 15-inch sizes, while the 2003 and 2004 fitments are all 18-inch sizes, so the wheel diameter changed with the later revival of the nameplate.

That change is the first thing to verify before looking at tread pattern or sidewall style. If the car is an early Mercury Marauder, stay within the 15-inch alphanumeric bias-ply group; if it is a 2003–2004 Mercury Marauder, stay within the 18-inch metric radial group.

The listed Mercury Marauder bias-ply sizes G78-15 and H78-15 call for tubes. The later 235/50R18 and 245/55R18 fitments are modern radial sizes and are handled as modern 18-inch radial applications rather than tube-type period sizes.

If you are fitting a 1969–1970 Mercury Marauder with one of the period-style 15-inch bias-ply tires, plan the installation as a tube-type setup. If you are working with a 2003–2004 Mercury Marauder, focus instead on selecting the correct metric radial size and appropriate sidewall appearance.

Crossply vs Radial

The answer depends on which Mercury Marauder you own. The 1969–1970 fitments listed here are alphanumeric bias-ply sizes on 15-inch wheels, while the 2003–2004 fitments are metric radial sizes on 18-inch wheels, so the construction choice follows the era and wheel package rather than personal preference alone.

For an early Mercury Marauder, bias-ply construction preserves the period look and matches the listed size family. For a 2003–2004 Mercury Marauder, radial construction is the correct path because the available sizes and wheel diameter are modern metric radial specifications.

A Mercury Marauder designed around radial sizes will feel different from one designed around bias-ply sizes because the tire construction itself is different. In this fitment range, that comparison really separates the 2003–2004 Mercury Marauder from the 1969–1970 Mercury Marauder rather than representing two interchangeable choices on the same wheel package.

The important point is not to treat radial and bias-ply as style variations of the same fitment. Match the construction to the correct year group and wheel diameter first, then choose among the available sidewall and series options within that proper size family.

A Mercury Marauder should not be set up with bias-ply and radial tires mixed across the car. The listed fitments separate naturally into an early 15-inch bias-ply group and a later 18-inch radial group, and combining constructions creates handling inconsistency even before wheel-size differences are considered.

Keep all four tires in the same size family and construction type that belongs to your Mercury Marauder's year and wheel diameter. If the car already has mismatched tires, treat the wheels and existing size markings as clues, then standardize the full set around the correct fitment.

Buying the Right Tire

A 1970 Mercury Marauder can take G78-15, H78-15, or H70-15, so the correct choice has to be tied to the specific car rather than the year alone. All three are 15-inch sizes, but they differ in width and series designation, which means they are not interchangeable assumptions simply because they share the same model year.

Start with the size currently fitted if it is known to be correct, then compare the wheel width and any surviving factory or restoration records. That approach is more reliable than choosing by appearance, especially on a model year where multiple 15-inch options appear under the same Mercury Marauder name.

Mercury Marauder tires in this group are available with blackwall, wide whitewall, redline, and RWL sidewall styles. The 15-inch bias-ply sizes are offered in blackwall and wide whitewall forms, while the 18-inch radial sizes appear in blackwall, redline, and RWL versions.

That gives early and late Mercury Marauder owners very different visual directions. A period restoration for a 1969–1970 car usually starts with the proper 15-inch size and then selects the sidewall look that suits the car's original presentation, while a 2003–2004 car can lean toward a more modern performance appearance.

The Mercury Marauder tire offerings here come from Coker Classic, STA, BFGoodrich, Nitto, and Pro-Trac. Those brands are spread across both eras, with Coker Classic and STA covering the 15-inch bias-ply fitments and BFGoodrich, Nitto, and Pro-Trac covering the 18-inch radial fitments.

Brand choice should come after you lock down the correct size and wheel diameter. Once the fitment is settled, you can compare sidewall style, series type, and the overall look you want for your particular Mercury Marauder rather than trying to choose a tire by brand name alone.

Mercury Marauder tires here span several series, including Coker Classic Bias Ply, Super Traxion, Traxion, g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, Street Pro III, and Silvertown Radial. The broad divide is between period-style 15-inch bias-ply series for the 1969–1970 cars and modern 18-inch radial performance series for the 2003–2004 cars.

That means series selection is really about matching the tire's character to the era of the car. Early Mercury Marauder owners typically focus on authentic bias-ply appearance, while later Mercury Marauder owners can compare modern radial series by sidewall styling and intended road feel within the correct 18-inch size.

Maintenance & Longevity

A Mercury Marauder should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, ozone sources, and prolonged contact with standing moisture. Clean tires and proper inflation matter on both the 15-inch bias-ply early cars and the 18-inch radial later cars because collector vehicles often sit for long periods.

If the Mercury Marauder will be parked for extended stretches, move it occasionally or use storage practices that reduce flat-spotting and localized stress. Short-term convenience can shorten tire life, so stable storage conditions are one of the simplest ways to preserve both appearance and road manners.

Tires on a Mercury Marauder should be inspected regularly even if the car is driven only occasionally. Look for cracking, tread or shoulder wear, impact damage, air loss, and age-related hardening, with extra attention to older-style bias-ply applications on the 1969–1970 cars.

A practical routine is to inspect before each outing and again during seasonal service. Collector cars often accumulate very little mileage, so condition changes can be missed if you rely only on tread depth instead of making a visual and inflation check part of every drive-prep routine.

A Mercury Marauder tire should be replaced when age, cracking, hardening, impact damage, or structural concerns appear, even if the tread still looks usable. Collector tires often age out before they wear out, and that is especially important on early bias-ply fitments where time and storage conditions can matter as much as miles driven.

Do not judge a tire only by how much rubber remains on the tread face. If a Mercury Marauder has sat for years, or if the tires show visible deterioration or have an uncertain service history, replacement is the safer path before returning the car to regular road use.

Restoration & Authenticity

Mercury Marauder fitments in this range include H70-15 for 1969 and multiple 15-inch options for 1970, while the later 2003–2004 cars use 18-inch metric radial sizes. The available product families show period-style bias-ply choices for the earlier cars and modern radial choices for the later cars, but the exact original setup still depends on the specific year and configuration.

For restoration work, treat the year and existing wheel package as the starting point and then verify against marque literature, surviving factory records, or a knowledgeable Mercury specialist. That is especially important for 1970, where more than one 15-inch size appears under the Mercury Marauder name.

Correct tire fitment can absolutely affect how a Mercury Marauder is judged, presented, and valued, especially when the goal is an authentic restoration. Size, construction type, wheel diameter, and sidewall appearance all influence whether the car looks consistent with its era and intended specification.

On an early Mercury Marauder, the difference between a proper 15-inch bias-ply presentation and an incorrect modern-looking alternative is immediately visible. On later cars, keeping the right 18-inch metric radial proportions matters for stance and correctness, so club standards and marque expertise remain worthwhile references.

Mercury Marauder restorations in this group can draw from wide whitewall, blackwall, redline, and RWL sidewall styles, but the correct look depends on the era of the car. The 1969–1970 15-inch fitments are the natural home for period bias-ply blackwall or wide whitewall treatments, while the 2003–2004 18-inch radial fitments align with modern blackwall, redline, or RWL styling.

The best approach is to match sidewall style to the way your Mercury Marauder was originally equipped or to the restoration standard you are following. Sidewall appearance is one of the most visible details on the car, so it is worth choosing after the correct size has already been settled.

Safety & Road Use

A Mercury Marauder can be driven on public roads when it is fitted with the correct size, properly installed tires, and the rest of the car is mechanically sound. The 2003–2004 cars use modern radial sizes that are naturally suited to contemporary road use, while the 1969–1970 cars need their period-style 15-inch fitments matched carefully to wheel and condition.

Road safety depends on more than simply mounting the tire. Check age, inflation, wheel condition, and full-vehicle mechanical health before regular use, especially on an early Mercury Marauder that may have been restored, stored, or driven only occasionally.

Before driving a Mercury Marauder, check tire pressure, visible cracking or damage, tread condition, and that all four tires match the car's correct size family. Also confirm the wheel diameter is right for the year group, since the Mercury Marauder moved from 15-inch fitments in 1969–1970 to 18-inch fitments in 2003–2004.

That pre-drive routine helps catch the most common problems before they become roadside failures. It is particularly important on a collector Mercury Marauder that sits for long periods, because storage can hide air loss, weathering, and age-related deterioration until the car is back in motion.

Appropriate speed for a Mercury Marauder depends on the tire type fitted and the overall condition of the car. A later Mercury Marauder on correct 18-inch radial tires can be driven in a more modern manner than an early car on period-style 15-inch bias-ply tires, which should always be treated with greater caution and respect for vintage handling limits.

The safest rule is to let tire condition, age, construction, and the car's mechanical state set the pace rather than the engine's capability. Smooth driving, conservative speeds, and extra following distance are wise on any collector Mercury Marauder, especially one running older-style bias-ply tires.