The 1991 Ford Mustang sits at an interesting point in Fox-body history, balancing the platform’s lightweight, street-oriented character with trim levels that ranged from everyday LX models to 5.0-powered performance cars. That variety matters at the tire level, because this Mustang used three different primary radial sizes: 195/75R14, 205/65R15, and 225/55R16. Depending on the exact sub-model, the decision may center on confirming wheel diameter first or choosing between blackwall, whitewall, and redline presentations once the correct size is established. For owners aiming at restoration-minded appearance or regular road use, matching the tire to the car’s actual wheel setup is the key first step.
Which Tire Size Is Right for The 1991 Ford Mustang
Three tire sizes apply to the 1991 Ford Mustang, and they do not all use the same wheel diameter. Fitment varies by sub-model, with 14-inch, 15-inch, and 16-inch rims all appearing across the range. Before choosing a tire, identify whether the car is an LX, GT, or LX w/5.0L Eng. and confirm the wheel diameter currently on the car, especially if wheels have ever been changed.
225/55R16 is a metric radial size in which 225 is the section width in millimeters, 55 is the aspect ratio, R identifies radial construction, and 16 is the rim diameter in inches. On the 1991 Ford Mustang, this size is tied to 16-inch-wheel applications and keeps the fitment in the radial construction used on this model year. Available choices here focus on BFGoodrich performance-oriented g-Force series tires in blackwall form. This size is the one to evaluate when the car has the larger factory-type wheel setup and the goal is to retain that lower-profile look.
195/75R14 is a P-metric radial size that uses a 195-millimeter section width, a 75-series profile, radial construction, and a 14-inch rim. For the 1991 Ford Mustang, it represents one of the LX fitments and carries a taller sidewall than the other sizes used across the model line. Product choices include several brands with wide whitewall and narrow whitewall treatments, giving this size a strong appearance-driven selection range. It is the right place to start when the car is an LX on 14-inch wheels and the tire decision is as much about visual character as fitment.
205/65R15 is a metric radial size with a 205-millimeter section width, a 65-series aspect ratio, radial construction, and a 15-inch rim diameter. On the 1991 Ford Mustang, this size belongs to certain LX applications using 15-inch wheels rather than the 14-inch or 16-inch setups found elsewhere in the lineup. Available options center on BFGoodrich Silvertown Radial tires, with a choice of wide whitewall or redline sidewall styling. This size makes sense when preserving a 15-inch-wheel Mustang setup and choosing between a cleaner touring look or a more performance-flavored period-style presentation.
Sub-model identification matters on the 1991 Ford Mustang because tire fitment changes across the range. Some versions use 16-inch wheels, while others use 14-inch or 15-inch setups, so confirming the exact sub-model helps narrow the correct size before comparing tire styles.
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1991 Ford Mustang GT
The 1991 Ford Mustang GT uses the 225/55R16 radial fitment tied to a 16-inch wheel. Tire selection here is less about sorting through multiple primary sizes and more about confirming the wheel setup, then choosing the right blackwall radial within that size.
The 1991 Ford Mustang LX can use either a 195/75R14 radial or a 205/65R15 radial, depending on the wheel package on the car. That makes wheel diameter the first thing to verify before choosing among whitewall, redline, or other appearance-oriented product options.
The 1991 Ford Mustang LX w/5.0L Eng. uses the 225/55R16 radial size associated with a 16-inch wheel. Once that size is confirmed on the car, the decision shifts toward selecting the tire series that best matches the Mustang’s intended street use and overall presentation.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1991 Ford Mustang Tires for Sale
Available 1991 Ford Mustang tires span BFGoodrich, Coker Classic, Tornel, Maxxis, and Travelstar, with product differences centered on size-specific fitment, blackwall versus whitewall or redline styling, and series such as g-Force, Silvertown Radial, Star Series, and UN106.
These FAQs focus on the exact tire sizes used on the 1991 Ford Mustang, how fitment changes by sub-model and wheel diameter, and how to compare available radial tires by appearance, construction details, and road-use considerations.
Tire Size & Fitment
What tire size fits a 1991 Ford Mustang?
A 1991 Ford Mustang can use three different radial tire sizes: 195/75R14, 205/65R15, and 225/55R16. The correct size depends on the exact sub-model and wheel package, with LX applications using either 14-inch or 15-inch setups, while GT and LX w/5.0L Eng. applications use 225/55R16 on a 16-inch rim.
The practical first step is confirming what sub-model the car is and then checking the actual wheel diameter on the vehicle. Many Fox-body Mustangs have been changed over the years, so the tire choice should follow the wheel that is on the car now rather than assumptions based only on the model name.
What size rim does a 1991 Ford Mustang use?
A 1991 Ford Mustang can use 14-inch, 15-inch, or 16-inch rims, depending on the sub-model and tire size. The 195/75R14 fitment uses a 14-inch rim, the 205/65R15 fitment uses a 15-inch rim, and the 225/55R16 fitment uses a 16-inch rim.
Because three rim diameters appear on this model year, wheel confirmation should come before tire shopping. Looking at the current tire sidewall, measuring the wheel, and checking whether the car has aftermarket wheels can prevent choosing the right size in theory but the wrong tire for the wheel actually installed.
Why does the 1991 Ford Mustang have more than one tire size?
The 1991 Ford Mustang has more than one tire size because fitment varies by sub-model and wheel package. LX models can appear with either 195/75R14 or 205/65R15 radial tires, while the GT and LX w/5.0L Eng. use 225/55R16 radials tied to a larger-diameter wheel.
That means the buyer decision starts with identifying the exact version of the car and confirming the wheel diameter currently fitted. Once that is settled, the next choices become more straightforward, such as whether the goal is a blackwall performance look, a whitewall presentation, or a redline-style appearance.
Choosing the Right Tire
What should I consider when choosing a 225/55R16 tire for a 1991 Ford Mustang?
For a 1991 Ford Mustang using 225/55R16, the main considerations are keeping the correct 16-inch fitment, confirming radial construction, and comparing the available BFGoodrich g-Force series options. In this size, the choices are blackwall tires with a performance-oriented presentation rather than wide whitewall or redline styling.
It helps to check the wheel width as well, since the available 225/55ZR16 products are built around a 6.0 to 8.0 inch rim-width range. From there, the decision is mostly about how the car will be used, the tire series preferred, and whether the Mustang is staying close to its existing visual style.
What sidewall styles are available for 1991 Ford Mustang tires?
Sidewall style depends on which tire size the 1991 Ford Mustang uses. The 225/55R16 options are blackwall, the 195/75R14 choices include narrow whitewall and wide whitewall designs, and the 205/65R15 options are offered in wide whitewall and redline form.
That range gives this Mustang several distinct visual directions, but only within the correct size for the car’s wheel setup. A GT or LX w/5.0L Eng. on 16-inch wheels does not share the same appearance choices as an LX on 14-inch or 15-inch wheels, so style selection starts after fitment is confirmed.
What brands offer tires for the 1991 Ford Mustang?
Tires for the 1991 Ford Mustang are available from BFGoodrich, Coker Classic, Tornel, Maxxis, and Travelstar, depending on the size. Brand selection is not uniform across all three fitments, since the 225/55R16 options are BFGoodrich, the 205/65R15 options are also BFGoodrich, and the 195/75R14 size has the broadest brand mix.
That makes it useful to identify the size first and then compare the brands actually offered within it. Once the fitment is narrowed down, differences in sidewall style, series, rim-width specification, and load figures become more relevant than trying to compare brands across sizes that do not serve the same application.
Restoration & Appearance
Which tire should I choose for a period-style 1991 Ford Mustang?
A period-style 1991 Ford Mustang tire choice starts with the correct size for the car’s actual sub-model and wheel diameter. After that, the appearance direction depends on the fitment: 225/55R16 leans toward a later-performance blackwall look, while 195/75R14 and 205/65R15 open the door to whitewall or redline presentations.
Owners aiming for a restoration-oriented result should treat the right size as the foundation and the sidewall style as the finishing touch. If exact originality matters, compare the car’s present setup with marque references or build-related documentation before choosing a whitewall width, redline treatment, or tire series on appearance alone.
How does tire construction affect the appearance of a restored 1991 Ford Mustang?
On the 1991 Ford Mustang, the primary fitments are radial tires, so the construction itself is already aligned with a more modern-era tire profile than a bias-ply vehicle would use. Appearance is shaped less by a bias-ply-versus-radial decision and more by the selected size, sidewall design, and the wheel diameter associated with that sub-model.
A blackwall 225/55R16 creates a different visual impression than a 195/75R14 or 205/65R15 with whitewall or redline styling, even though all are radial. For a restoration-minded Mustang, matching the tire’s shape and sidewall treatment to the wheel setup usually has the biggest effect on whether the finished car looks cohesive.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1991 Ford Mustang?
Yes, modifications can affect tire fitment on a 1991 Ford Mustang. Aftermarket wheels, suspension changes, altered ride height, and body or brake changes can all change the clearance relationship that the original 14-inch, 15-inch, or 16-inch fitment expected.
A Mustang that has been lowered or fitted with different-width wheels should be checked carefully before settling on a tire. Wheel diameter is only part of the picture, since width, offset, steering clearance, and fender space can all influence whether the chosen 195/75R14, 205/65R15, or 225/55R16 setup is appropriate.
What should I inspect before driving a 1991 Ford Mustang on new tires?
Before driving a 1991 Ford Mustang on new tires, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and make sure the tires are inflated properly for the intended setup. It is also wise to look over suspension and steering components so the new tires are not being asked to work around worn hardware.
A short, careful test drive can reveal rubbing, pull, vibration, or other issues that deserve attention before regular use. Collector-era cars often spend long periods parked, so it also helps to check for old air leaks, uneven wear patterns, and signs that the previous tires may have masked an alignment or wheel-condition problem.
How should tires on a collector 1991 Ford Mustang be maintained?
Tires on a collector 1991 Ford Mustang should be maintained with regular pressure checks, visual inspections, and periodic attention even when the car is not driven often. Sidewall cracking, bulges, cuts, flat spotting, and slow air loss are all worth monitoring, especially on a vehicle that may spend more time stored than on the road.
Storage conditions matter just as much as mileage on a low-use Mustang. Keeping the car away from prolonged heat, direct sunlight, moisture, and ozone-producing equipment helps protect the tires, and occasional movement of the car can reduce long-term stress on one contact patch while the vehicle is parked.
