1973 Dodge Monaco Tires

The 1973 Dodge Monaco does not use one universal tire size across every covered configuration. The 2 Seat Wagon uses J78-15 in bias-ply form or LR78-15 in radial form, the 3 Seat Wagon uses L84-15 in bias-ply form or LR78-15 in radial form, and the Base model uses H78-15 in bias-ply form or HR78-15 in radial form.

That means the first step is identifying the exact Monaco sub-model rather than selecting by year and model name alone. Since all of these fitments use a 15-inch rim, the real risk is choosing the wrong size or construction for the vehicle's specific setup, especially if the car has had wheel or tire changes over time.

The covered tire fitments for the 1973 Dodge Monaco all use a 15-inch rim diameter. That includes J78-15, LR78-15, L84-15, H78-15, and HR78-15, so wheel diameter is consistent even though the tire sizes and constructions vary by sub-model.

A shared 15-inch rim diameter does not mean every Monaco can use every size shown on the page. The sub-model still matters, and wheel width should also be checked before choosing among available tires, especially on cars that may have been changed from their earlier bias-ply or radial arrangement.

More than one tire size appears because the 1973 Dodge Monaco is represented by different sub-models, and those sub-models do not all use the same primary fitment. Wagon applications and the Base model are separated by size, and some configurations also show a bias-ply fitment alongside a radial fitment on the same 15-inch wheel diameter.

For a buyer, that means tire selection is tied to the exact vehicle configuration rather than a broad Monaco label. A 2 Seat Wagon, 3 Seat Wagon, and Base model should be checked individually, and any car with replacement wheels or long-ago tire changes should be verified at the vehicle before a new set is chosen.

H78-15 is a bias-ply tire size for the 1973 Dodge Monaco Base. The radial counterpart associated with the Base model is HR78-15, which uses the older alphanumeric radial format rather than the bias-ply H78-15 designation.

That distinction matters because H78-15 and HR78-15 may share a 15-inch rim diameter while still representing different tire constructions and fitment decisions. Owners working with a Base-model Monaco should confirm whether the car is being kept in its bias-ply setup or whether it is already configured around the radial size before comparing tire choices.

H78-15 has several radial-equivalent sizes available: 215R15 as an 80-series metric radial, P225/75R15 as a 75-series P-metric radial, P235/70R15 as a 70-series P-metric radial, and 760R15 as a bias-look radial. These options give the 1973 Dodge Monaco Base owner several ways to compare a radial alternative to the original bias-ply size.

The practical difference is in sizing format and presentation rather than a simple one-answer conversion. The recommended rim-width range attached to those equivalents is 6-8 inches, and any move from H78-15 to a radial equivalent should be checked against the actual wheel width, vehicle clearance, and the way the car is intended to look and drive.

Start by confirming the Monaco's exact sub-model and original bias-ply size, because J78-15, L84-15, and H78-15 do not apply to the same configurations. Where a true radial equivalent exists, compare the intended alternative size to the wheel diameter and the recommended rim-width range before treating it as a candidate.

A conversion also deserves a close look at wheel width, tire-to-fender clearance, steering clearance, and the condition of the suspension and alignment. Cars that have sat for long periods or have had replacement wheels added over the years should be measured at the vehicle so the radial choice supports both safe clearance and the appearance goal.

The first consideration is the exact Monaco sub-model, because the 2 Seat Wagon, 3 Seat Wagon, and Base model do not all use the same primary size. After that, the decision usually comes down to construction type, since some configurations are tied to a bias-ply size while others are tied to a radial size on the same 15-inch wheel diameter.

Once the correct size is established, compare the available tires by sidewall style, tire series, and wheel-width compatibility. A buyer focused on restoration-oriented appearance may lean toward a traditional whitewall or blackwall presentation, while a driver keeping an existing radial setup may care more about matching the car's current wheel and road-use configuration.

Available sidewall styles for 1973 Dodge Monaco tire sizes include Dual-White-Stripe, Narrow Whitewall, Wide Whitewall, and Blackwall. The exact sidewall choice depends on the specific tire size, since different Monaco fitments have different product assortments and not every style appears in every size.

That makes sidewall selection part appearance choice and part size choice. A buyer should first confirm the correct Monaco sub-model and tire size, then compare the available sidewall treatments within that fitment so the final selection matches the car's visual style without drifting into the wrong size or construction.

Tires for the 1973 Dodge Monaco are available from BFGoodrich, Firestone, Coker Classic, and STA, depending on the size. Brand availability changes with the fitment, so one Monaco sub-model may have a different brand mix than another even though all use a 15-inch rim diameter.

The better approach is to start with the right size and construction, then compare the brands available in that specific fitment. Series names, sidewall treatments, rim-width specifications, and overall presentation often matter more than the brand name alone when choosing tires for a big full-size collector-era Dodge.

A period-style 1973 Dodge Monaco usually starts with the correct primary size for the exact sub-model, then stays within the appropriate construction type for that setup. J78-15, L84-15, and H78-15 are the bias-ply starting points shown across the covered Monaco configurations, while LR78-15 and HR78-15 represent radial fitments tied to specific applications.

From there, appearance comes from selecting the right sidewall treatment within the correct size rather than forcing one visual style onto every Monaco. Buyers chasing strict originality should compare their car against marque references or restoration documentation, while others can focus on a traditional look that still respects the vehicle's proper fitment.

Tire construction changes more than ride characteristics on a restored 1973 Dodge Monaco; it also affects the vehicle's visual stance and overall presentation. A bias-ply size such as J78-15 or H78-15 preserves a traditional vintage format, while radial sizes such as LR78-15 and HR78-15 give the car a later-style tire presentation within the same 15-inch wheel diameter.

That difference becomes even more noticeable once sidewall styling is added, since blackwall, narrow whitewall, wide whitewall, and dual-white-stripe treatments create very different impressions. The most convincing result usually comes from choosing the right construction first, then selecting a sidewall style that suits the car's restoration direction and intended road use.

Yes, modifications can affect tire fitment on a 1973 Dodge Monaco even when the tire size itself is correct for the sub-model. Changes such as aftermarket wheels, different wheel widths, altered offset, suspension modifications, or ride-height changes can all influence whether the selected tire clears the body and steering components properly.

That is especially important on a car with multiple valid 15-inch tire sizes across the model range, because a previous owner may have mixed parts from another Monaco configuration. Any modified car should be checked at full steering lock and through suspension movement so the chosen tire works with the actual wheel-and-chassis setup.

Before driving a 1973 Dodge Monaco on new tires, inspect the wheels for the correct 15-inch diameter and appropriate width for the tire being used, then check inflation, valve stems, and overall seating on the rim. It is also wise to look over the suspension, steering, and alignment condition so the new tires are not being asked to mask existing problems.

A short test drive should be paired with a recheck for air loss, rubbing, and any unusual contact at the fenders or during turning. Collector cars that have been parked for long stretches deserve extra attention, since dried bushings, worn shocks, or old wheel hardware can affect how the new tires behave once the car returns to the road.

Tires on a collector 1973 Dodge Monaco should be maintained with regular pressure checks, routine visual inspection, and careful storage habits. Even low-mileage cars can develop age-related issues, so tread condition, sidewall cracking, cuts, bulges, and slow air loss deserve attention whether the car is running bias-ply or radial tires.

Long periods of sitting can be harder on collector tires than steady use, especially when the car is exposed to heat, sunlight, moisture, or ozone sources. Keeping the Monaco clean, properly inflated, and periodically inspected at the wheels helps catch problems early and supports more predictable road manners when the car is driven again.