Also Written As: 17575R14, 175 75R14, 175-75R14, 1757514, 175 75 14
The 175/75R14 tire is a modern radial passenger-car size associated with compact and midsize applications from the late 1970s through the mid-1980s. Its 75-series profile balances a relatively tall sidewall with everyday road manners, making it relevant for drivers who want stock-like proportions without moving away from a radial construction. For older cars that originally used this size, radial construction can improve day-to-day drivability, though a judged restoration may call for a different look or construction type. Before choosing one, confirm your vehicle's load needs, wheel width compatibility (5.00 inches), and fender, suspension, and brake clearance.
The 175/75R14 size is offered in 1 brand with 1 product currently represented. Buyers should compare construction type, sidewall style, and load rating against the vehicle's actual wheel and service requirements.
The 175/75R14 measures 175 mm wide, has a 75 aspect ratio, a 5.17-inch sidewall, an overall diameter of 24.33 inches, and fits a 14.0-inch rim.
Section Width: 175 mm (6.89 in) — This is the dimension to check first against fender lips, suspension components, and brake clearance.
Aspect Ratio: 75 — A higher number means a taller, rounder sidewall; a lower number means a lower, wider profile.
Sidewall Height: 5.17 in (131.25 mm) — Sidewall height determines how much cushioning the tire provides and how the profile fills the wheel opening.
Overall Diameter: 24.33 in (617.98 mm) — This determines ride height, wheel-opening fill, and speedometer accuracy — and is the first number to compare when evaluating any substitute size.
Rim Diameter: 14.0 in (355.6 mm) — This must match exactly — 175/75R14 cannot be mounted on any other rim diameter regardless of how other dimensions compare.
Rim Width: 5.00 in — A wheel that is too narrow causes the sidewall to bulge inward; one that is too wide splays the tire flat and distorts the profile.
Circumference: 76.43 in (1941.32 mm) — Use this to compare how a substitute size will affect speedometer calibration.
Revolutions Per Mile: 829.0 — A meaningfully different value from a substitute size will alter speedometer and odometer readings.
Construction: Radial — Construction type affects ride feel, sidewall flex, handling behavior, and period-correctness for restoration.
Maximum Load Capacity: 1,168 lb at 44 psi — Load capacity must meet or exceed the demands of the vehicle, passengers, cargo, and intended use.
Tire Weight: 16 lb — Heavier construction reflects a denser carcass and increases unsprung weight on the vehicle.
Vehicles That Use 175/75R14
The 175/75R14 appeared on several Ford and Mercury passenger cars from 1980 through 1983, including applications within the Fairmont, Mustang, Granada, Capri, Cougar, and Zephyr lines. Those listings are best treated as a starting point rather than a blanket fitment rule, since wheel width, trim level, suspension changes, and replacement-wheel choices can all affect whether this size remains appropriate.
Find answers to the most common questions about 175/75R14 tire sizing, fitment, compatibility, performance, maintenance, and replacement options.
Size Basics & Dimensions
What does 175/75R14 mean?
The 175/75R14 size code breaks down into four parts. The 175 is the tire's section width in millimeters, 75 is the aspect ratio, R means radial construction, and 14 is the wheel diameter in inches. Put together, it describes a narrow passenger-car radial with a relatively tall sidewall mounted on a 14-inch rim.
Unlike older alphanumeric or numeric vintage sizes, the 175/75R14 format gives the width and profile directly in measurable terms. It does not tell you everything, though. Load capacity, speed rating, sidewall style, and exact wheel-width suitability still depend on the individual tire, so those markings should be checked before treating one 175/75R14 as interchangeable with another.
What size wheel does the 175/75R14 tire fit?
The 175/75R14 fits a 14-inch wheel, which is 355.6 millimeters at the bead seat. The rim diameter must match exactly, because a 14-inch tire will not seat properly on a wheel of any other diameter even if the width looks close.
Wheel width matters too. In the currently represented version of this size, the tire is specified for a 5.00-inch wheel. If a car has replacement wheels, trim-package changes, or nonstock offsets, verify the wheel dimensions before ordering. Getting the diameter right is only the first step; the full wheel-and-tire combination still has to preserve proper profile, clearance, and load support.
How wide is the 175/75R14 tire?
The 175/75R14 has a section width of 175 millimeters, which is about 6.89 inches. Section width is the tire's widest inflated sidewall-to-sidewall measurement, not the width of the tread where it contacts the road.
Clearance questions should be judged from section width first, because that is where a tire usually gets closest to suspension parts, inner fenders, or outer lips. Tread width is often narrower and can mislead buyers into thinking they have more room than they actually do. On a replacement setup, compare section width along with wheel width and overall diameter rather than relying on the nominal size alone.
What is the overall diameter of the 175/75R14 tire?
The 175/75R14 has an overall diameter of 24.33 inches, or about 617.98 millimeters. That number represents the tire's full mounted and inflated height from the ground to the top of the tread, measured through the center.
Overall diameter affects much more than appearance. A noticeable change in diameter alters ride height, wheel-opening fill, effective gearing, and speedometer readings. Buyers comparing the 175/75R14 with a substitute size should start with diameter before looking at tread style or sidewall details, especially on cars where original stance and speedometer behavior still matter.
How tall is the sidewall on the 175/75R14 tire?
The 175/75R14 has a sidewall height of 5.17 inches, or about 131.25 millimeters, on each side of the tire. That figure comes from the 75 aspect ratio, meaning the sidewall height is 75 percent of the 175-millimeter section width.
Sidewall height influences both the look and the feel of the tire. A taller sidewall usually gives a more compliant ride and a fuller wheel opening than a lower-profile substitute on the same wheel diameter. On older passenger cars, keeping a sidewall close to this height often helps preserve a stock-like stance instead of creating a shorter, more modern appearance.
How many revolutions per mile does the 175/75R14 tire turn?
The 175/75R14 turns about 829.0 revolutions per mile. That number is based on the tire's calculated circumference of 76.43 inches and gives a practical way to compare how close another size is in rolling distance.
Revolutions per mile matter whenever you are considering a substitute size, because a tire that turns more or fewer times per mile will change speedometer and odometer readings. Even when two tires both fit a 14-inch wheel, a different revs-per-mile figure can affect cruising rpm and indicated road speed, so it is worth comparing before making a swap.
Tire Compatibility & Fitment
What kinds of vehicles typically use the 175/75R14?
The 175/75R14 is a passenger-car radial size associated here with late-1970s to mid-1980s compact and midsize applications. Its vehicle history in this size range includes Ford and Mercury passenger cars, which places it in the category of practical road-use fitments rather than oversized specialty or truck tires.
Vehicle lists are a starting point, not a fitment guarantee. Buyers should still confirm the original tire placard or owner documentation, then compare wheel diameter, actual wheel width, suspension clearance, and any changes from aftermarket wheels or altered ride height. A car that once accepted the 175/75R14 in one trim level may need a different setup in another.
Can the 175/75R14 be used as a stock-size replacement?
The 175/75R14 can be an appropriate stock-size replacement when the vehicle was originally equipped for that exact size and the wheel setup remains correct. Its 24.33-inch overall diameter and relatively narrow 175-millimeter section width help preserve factory-like proportions on cars designed around a modest 14-inch radial.
Replacement decisions should go beyond the sidewall code. Check whether the wheel is still the proper diameter and width, whether the car has been lowered or modified, and whether the tire's load and speed markings match the vehicle's needs. On older passenger cars, even small dimensional changes can alter stance, steering response, and clearance at full lock.
Is the 175/75R14 correct for a period-style restoration?
The 175/75R14 can make sense for a restoration when the vehicle originally used a metric radial in this size range, especially on early-1980s passenger cars that were already in the radial era. It preserves the general proportions of a 75-series tire while keeping the more familiar road behavior many owners want in regular driving.
Judged originality can be stricter than casual restoration. Some cars are best served by matching not only the size but also the construction type, sidewall appearance, and overall profile expected for that exact build date and trim. If authenticity is the goal, compare the tire against factory documentation rather than relying on size alone.
Performance & Driving Experience
How does the 175/75R14 drive on the road?
The 175/75R14 combines radial construction with a 75-series sidewall, so it typically offers a more settled everyday feel than an older bias-ply design while still keeping some sidewall height for ride comfort. Its narrow section width and 24.33-inch diameter suit lighter passenger-car applications where factory-like proportions matter.
Driving feel still depends on more than size. Alignment, suspension bushings, steering condition, inflation, and tire age all influence how a car behaves. On an older compact or midsize platform, the 175/75R14 usually feels most natural when the rest of the chassis is in good order and the wheel width remains appropriate for the tire.
Does the 175/75R14 have a softer ride than a lower-profile replacement?
Yes, a 175/75R14 usually rides with more cushioning than a lower-profile tire on the same wheel diameter because its sidewall is 5.17 inches tall. That extra sidewall height allows more flex over pavement seams, expansion joints, and irregular road surfaces than a shorter-profile substitute.
Ride quality is only part of the tradeoff. A shorter replacement may sharpen steering response, but it can also change wheel-opening fill and make the car look lower or slightly undersized. Buyers trying to keep a stock-like road feel often stay close to the original sidewall height instead of choosing a lower-profile size simply because it is easier to find.
How would a different overall diameter than the 175/75R14 affect drivability?
Any substitute that differs meaningfully from the 175/75R14's 24.33-inch overall diameter will change how the car behaves. A shorter tire turns more than the 175/75R14's 829.0 revolutions per mile, which can raise engine rpm and make the speedometer read faster than actual road speed.
A taller substitute moves in the opposite direction and can reduce wheel-well clearance at the top of the tire. Beyond gearing effects, diameter changes alter stance and the visual balance of the car. When comparing sizes, measure against overall diameter first and then confirm section width, rim fit, and clearance rather than judging by wheel diameter alone.
Tire Brands & Quality
What brands are available in the 175/75R14?
Travelstar is represented in the 175/75R14 size. In this listing, the size appears as a radial passenger-car tire with a narrow whitewall and a T speed rating, which gives buyers a clear starting point for matching both appearance and everyday-use expectations.
Brand choice is only one part of the decision. Buyers should also compare whether the tire's construction, sidewall style, wheel fit, and service ratings match the vehicle they are actually putting it on. A well-chosen 175/75R14 should fit the car's proportions and operating needs, not just carry the right sidewall code.
What should buyers look for in a quality 175/75R14 tire?
A quality 175/75R14 should match the intended use of the car before anything else. For this size, that means confirming radial construction, proper 14-inch rim fit, suitable wheel width, and service ratings that are appropriate for the vehicle's weight and driving pattern.
Consistency matters just as much as the headline specification. On a regularly driven passenger car, buyers should look for even sizing across the set, clean sidewall finish, predictable balancing behavior, and markings that align with the car's needs. If appearance matters, a narrow whitewall should also be selected deliberately so the car keeps the look the owner wants.
Should all four 175/75R14 tires match in construction and appearance?
Yes, matching all four 175/75R14 tires in construction and general appearance is usually the best approach. Keeping the same radial design, size, and sidewall style at every corner helps preserve balanced handling and a uniform visual presentation on the vehicle.
Mixing tire styles can create uneven steering feel and an inconsistent stance, especially on older passenger cars with soft suspensions and modest tire widths. If a car uses a narrow whitewall in this size, owners who care about a finished period look will usually want the stripe width and sidewall treatment to match across the full set.
Maintenance & Longevity
How often should the 175/75R14 be inspected on a regularly driven car?
A 175/75R14 on a regularly driven car should be inspected routinely for cracking, cuts, bulges, embedded objects, uneven wear, and air loss. Radial tires can still look usable at a glance while developing age-related or service-related issues that only show up during a closer check.
Monthly pressure checks and a visual inspection before longer trips are good habits for this size. Older cars often have alignment, steering, or suspension wear that shows up first in the tires, so unusual shoulder wear or feathering should be treated as a chassis clue as well as a tire issue. Early inspection helps prevent avoidable roadside trouble.
Does the 175/75R14 normally use a tube?
The 175/75R14 is normally a tubeless fitment. Still, tube use is a wheel-and-tire-system question rather than a size question, so the final decision should be confirmed against the actual tire, the wheel being used, and any manufacturer guidance that applies to that combination.
Wheel condition matters as much as tire type. A sound 14-inch wheel with proper bead seats is part of what allows a tubeless radial to function as intended. If the car uses older wheels, replacement rims, or unusual hardware, have the assembly checked carefully so the tire, wheel, and valve setup all work together correctly.
How long can the 175/75R14 last if the car is driven only occasionally?
A lightly used 175/75R14 can age out before it wears out. Time, heat cycles, sunlight, ozone exposure, and long periods of sitting all affect rubber condition, so tread depth alone is not a reliable measure of whether an older tire is still suitable for continued road use.
Collector-style use calls for regular inspections even when mileage is low. Store the car away from direct sun, electric-motor ozone sources, and damp conditions, and move it occasionally to reduce flat spotting. Before returning an infrequently driven car to service, check for cracking, sidewall stiffness, and air retention rather than assuming a nice-looking tire is still ready for use.
Safety & Regulations
When should the 175/75R14 be replaced for safety reasons?
The 175/75R14 should be replaced when inspection reveals cracking, bulges, exposed cords, repeated air loss, impact damage, or uneven wear severe enough to affect serviceability. Age also matters. Even a tire with usable tread can become a replacement candidate if time and storage conditions have hardened or deteriorated the rubber.
Roadworthiness is about condition as much as size. Before highway trips, inspect the full casing, verify inflation, and look for signs that the tire is no longer wearing evenly. On older passenger cars, a seemingly small tire issue can be amplified by worn suspension parts or marginal alignment, so replacement timing should be judged conservatively.
What load rating should buyers verify on the 175/75R14?
In the represented version of this size, the 175/75R14 is rated at 1,168 pounds at 44 psi. That figure is the maximum load for one tire at the stated pressure, so buyers should confirm that the tire's service rating suits the actual vehicle weight and how the car is used.
Load verification is especially important on older cars that may carry passengers, luggage, or aftermarket equipment that changes operating weight. Matching the sidewall size alone is not enough. Compare the tire's load and speed markings to the vehicle's requirements, and keep the wheel specification in the picture because tire and wheel capacity work together.
Is the 175/75R14 suitable for modern road use?
The 175/75R14 is a radial passenger-car size, which makes it more in line with modern driving expectations than an older bias-ply format. Even so, suitability for actual road use depends on the specific tire's condition, load and speed markings, wheel compatibility, and the mechanical state of the vehicle it is mounted on.
Drivers should review current sidewall markings and inspect the tires before sustained road travel, especially on older vehicles that may have seen wheel or suspension changes over time. Local requirements can vary, and size alone does not establish legality or serviceability. A qualified tire professional can help confirm that the full wheel-and-tire package is ready for use.