1998 Mitsubishi Tire Fitment Guide

1998 Mitsubishi vehicles use 12 different tire sizes across five models. The 3000GT uses 225/55R16, 245/45R17, and 245/40R18; the Diamante uses 205/65R15 and 215/60R16; the Eclipse uses 205/55R16, 215/50R17, and 195/70R14; the Galant uses 185/70R14 and 195/60R15; and the Mirage uses 175/70R13 and 185/65R14. Rim diameters span 13, 14, 15, 16, 17, and 18 inches, so there is no single size family shared across the full 1998 Mitsubishi range.

That means year and make alone are not enough to choose a tire for a 1998 Mitsubishi. Start by identifying the model, then confirm the wheel diameter already on the car before comparing tire lines, sidewall styles, and load or speed characteristics. If the car has changed hands several times or wears aftermarket wheels, checking the sidewall marking on the existing tire and the wheel diameter itself is the safest way to avoid ordering the wrong size.

On a 1998 Mitsubishi, 225/55R16 is a modern metric radial size. The 225 is the nominal section width in millimeters, 55 is the aspect ratio, the R means radial construction, and 16 is the wheel diameter in inches. Within the 1998 Mitsubishi range, that size belongs to the 3000GT and mounts on a 16-inch wheel, with product fitments in this size covering rim widths from 6.0 to 8.0 inches.

Reading the code correctly helps separate wheel fitment from brand or performance preference. A 225/55R16 tire is not interchangeable with the 3000GT's 17- or 18-inch sizes unless the wheel diameter changes as well. Once the size is confirmed, you can compare things like sidewall appearance, load capacity, and speed rating within that exact size instead of cross-shopping tires that fit a different wheel.

No, 1998 Mitsubishi models do not use the same tire size. The sporty 3000GT and Eclipse each span multiple wheel diameters, while the Diamante, Galant, and Mirage each use their own smaller size groups. Even where two models share a wheel diameter, the actual tire size can still differ, such as 185/70R14 on the Galant versus 195/70R14 on certain Eclipse applications.

That variation matters because a tire that fits one 1998 Mitsubishi model may be completely wrong for another, even if both are from the same year. If you are unsure, begin with the model badge, then verify the current sidewall size and wheel diameter. That extra step is especially important on late-1990s imports, where trim levels, wheel packages, and owner changes can move a car away from the size family most people expect.

Sidewall style depends heavily on size within the 1998 Mitsubishi range. Many of the sport-oriented sizes such as 225/55R16, 245/45R17, 245/40R18, 205/55R16, 215/50R17, 195/70R14, 175/70R13, and some 185/70R14 and 195/60R15 applications are available as blackwalls. Sedan-oriented sizes such as 205/65R15, 185/70R14, and 195/60R15 also open the door to wide whitewall, redline, and RWL choices depending on the exact size.

For a late-1990s Mitsubishi, blackwall is generally the most era-appropriate look for stock appearance, especially on performance coupes and mainstream daily-driver sedans. Whitewall, redline, and raised white letter styles create a much more personalized look and can push the car toward a custom or retro presentation rather than a factory-authentic one. Choose the sidewall treatment only after the size is settled, since style availability changes considerably from one Mitsubishi size to another.

1998 Mitsubishi tire coverage includes BFGoodrich, Nitto, Michelin, Dunlop, Avon, and M&H Racemaster. BFGoodrich appears across much of the range, from 3000GT and Eclipse sport sizes to Diamante and Galant sedan sizes. Michelin, Dunlop, and Avon appear in selected metric radial sizes, while M&H Racemaster is concentrated in 3000GT performance sizes such as 245/45R17 and 245/40R18.

Brand choice for a 1998 Mitsubishi usually comes after the size and wheel diameter are confirmed, not before. Once that is done, a 3000GT owner may be comparing among performance-focused blackwall radials, while a Galant or Diamante owner may also be weighing appearance-driven sidewall treatments. Keeping the search inside the correct size is the key, because each Mitsubishi model has its own brand mix rather than one common selection across the whole lineup.

For a 1998 Mitsubishi in 195/60R15, BFGoodrich Radial T/A and Michelin Primacy 3 differ in both appearance and rating details. The BFGoodrich version uses an RWL sidewall, carries an 87S marking with a 112 mph speed ceiling, supports up to 1,190 pounds at 35 psi, and fits 5.50- to 7.00-inch rims. The Michelin Primacy 3 uses a blackwall sidewall, carries an 88V TL marking with a 149 mph ceiling, and fits roughly the same 5.5- to 7-inch rim range.

That makes the decision less about whether the size fits and more about what kind of presentation and rating profile you want on the car. A Galant owner chasing a more period-styled enthusiast look may lean toward raised white letters, while a cleaner modern appearance points toward the blackwall Michelin. Either way, compare the exact sidewall marking and speed symbol on the tire you are considering rather than assuming every 195/60R15 is built the same.

Rim width recommendations vary by size on 1998 Mitsubishi vehicles. Examples include 225/55R16 at 6.0 to 8.0 inches, 245/45R17 at roughly 7.5 to 9.0 inches with one drag radial at 8 inches, 245/40R18 at 8.0 to 9.5 inches with one drag radial at 8.5 inches, 205/65R15 at 5.50 to 7.50 inches, 205/55R16 at 5.5 to 7.5 inches, 215/50R17 at 6.0 to 7.5 inches, 185/70R14 at about 4.5 to 6.5 inches, 195/60R15 at 5.5 to 7.0 inches, and 175/70R13 at 4.5 to 6.0 inches.

Those ranges show why the tire size and the wheel both need to be checked before mounting. A tire can have the right diameter and still be poorly matched to the wheel if the rim is too narrow or too wide for the product. On any 1998 Mitsubishi with aftermarket wheels, confirm the actual wheel width first, then compare it to the rim-width range for the exact tire you want rather than relying on the factory size alone.

Most 1998 Mitsubishi sizes here are represented by modern radial products, and some carry explicit TL tubeless markings, including Michelin choices in 205/55R16, 185/70R14, and 195/60R15. Other products in the same general year-make range do not always spell out tube status in the sidewall marking, so tube usage can vary by product rather than by year and make alone. None of these sizes point to an old-style tube-required collector fitment as a universal rule.

The practical move is to check the exact sidewall marking and the wheel design together before installation. A tubeless tire still depends on a wheel that is suitable for tubeless use and in sound condition, while any product that calls for a tube should be paired accordingly. On a 1998 Mitsubishi that still wears original wheels, valve-stem condition and bead-seat corrosion deserve attention along with the tire itself.

A 1998 Mitsubishi should be stored in a cool, dry, dark place with the tires kept away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Inflate the tires to a sensible operating pressure, keep the car off damp ground, and move it periodically so the same tread area does not carry the load for months at a time. Radial tires generally tolerate storage better than older bias-ply designs, but they still age from time, heat, and environment.

If the car will sit for a long period, tire cradles or properly placed stands can reduce stress on the carcass and help preserve shape. That matters on everything from a Mirage to a 3000GT, because low-use collector habits can age a tire long before the tread wears out. Cleaning the tires with mild soap and water, not petroleum-based dressings, also helps avoid cosmetic cracking and premature sidewall deterioration.

On a 1998 Mitsubishi, tire age usually matters more than mileage. A sensible rule is to begin careful age-based evaluation around five to seven years and to treat around ten years as the point where replacement should be strongly considered, even if the tread still looks usable. The DOT date code on the sidewall tells you when the tire was made, and that date often reveals more than the odometer on a low-use coupe or sedan.

Collector and hobby vehicles can fool owners because the tires may look fresh at a glance while the rubber has already hardened with time. That is especially true for a second car, weekend Eclipse, or preserved 3000GT that sees limited miles but long gaps between drives. If the date code shows significant age, inspect more critically for cracking, stiffness, and air-loss tendencies before deciding the tire is still serviceable.

Tires on a 1998 Mitsubishi should be inspected before every drive and again before any longer road trip. Look for sidewall cracking, tread separation, punctures, bulges, uneven wear, and visible aging around the bead area. Pressure should be checked regularly on all sizes, and any tire or wheel combination using tubeless construction should also be watched for slow leaks at the valve stem or bead seat.

That inspection routine is especially important on older enthusiast cars because they are often driven less often, which can hide gradual deterioration. A quick walkaround can catch a problem before it becomes a roadside issue, whether the car is a Mirage commuter kept in reserve or a 3000GT that only comes out on fair-weather weekends. If you notice repeated air loss or irregular wear, address the wheel, alignment, and suspension condition along with the tire.

A 1998 Mitsubishi 3000GT originally belonged to the modern radial era, so radial construction is the authentic starting point. Within this year-make range, the 3000GT uses 225/55R16, 245/45R17, or 245/40R18 depending on the specific car and wheel package. No original-equipment tire brand should be assumed from size alone, but the construction type and size family are clear enough to guide a proper search.

If originality matters, first confirm the wheel diameter actually fitted to your 3000GT and then match the tire size to that setup. A marque club, factory brochure, or original window sticker can help sort out trim- or market-specific wheel and tire combinations. That extra verification is worthwhile because a 3000GT can wear more than one factory-style wheel diameter, and the right tire depends on that detail.

Yes, correct tire fitment can matter on a shown 1998 Mitsubishi, especially when the goal is factory-authentic presentation. Judges and knowledgeable enthusiasts often notice whether the tire size matches the model's proper wheel diameter, whether the sidewall style suits the era, and whether the overall look fits the car's original character. A blackwall radial is usually the safer visual direction for a stock late-1990s Mitsubishi than a whitewall, redline, or raised-white-letter treatment.

That does not mean every event uses the same standard, but obvious mismatches can distract from an otherwise careful restoration. A Galant or Diamante wearing a dramatic custom sidewall treatment may still look attractive, yet it reads differently than a showroom-correct restoration. If you plan to show the car seriously, compare your tire choice against event rules and model-specific enthusiast references before making appearance the deciding factor.

For a 1998 Mitsubishi in 205/65R15, BFGoodrich Silvertown Radial appears in both 2-inch whitewall and redline versions. Both share the same basic size, radial construction, 15-inch rim fitment, 5.50- to 7.50-inch rim-width range, and a load figure of 1,400 pounds at 35 psi. The key difference is visual presentation rather than dimensional fitment, since the sidewall treatment changes the car's character more than the mounting specs do.

That makes this choice especially relevant for a Diamante owner using the tire to shape the car's appearance. A whitewall gives the sedan a more formal, custom, or nostalgic look, while a redline creates a sportier accent that still stands apart from a standard blackwall. Neither look is the default late-1990s Mitsubishi appearance, so owners focused on originality should weigh style carefully before choosing one over the other.

Yes, many tires used on 1998 Mitsubishi vehicles are suitable for highway driving when they are the correct size, in good condition, and inflated properly. Speed ratings in this range include S at 112 mph, H at 130 mph, V at 149 mph, W at 168 mph, and Y at 186+ mph, depending on the exact tire. Those ratings comfortably exceed normal U.S. highway speeds, although specialized drag-oriented products in 3000GT sizes should be treated differently from everyday street tires.

Real-world safety on a 1998 Mitsubishi also depends on the car itself. Brakes, suspension condition, alignment, wheel integrity, and the age of the rubber all matter just as much as the speed symbol molded into the sidewall. A healthy Galant, Eclipse, or 3000GT on fresh, properly matched tires is a very different proposition from the same car on aged rubber that looks acceptable but has already hardened or cracked with time.

Inflation pressure for 1998 Mitsubishi tires should start with the vehicle's factory recommendation, then be cross-checked against the tire's own rated maximum figures. Examples within this range include 225/55R16 at 1,521 pounds at 51 psi, 245/45R17 at 1,279 pounds at 35 psi on one product and up to 1,709 pounds at 50 psi on another, 205/65R15 at 1,400 pounds at 35 psi, 215/50R17 at 1,521 pounds at 50 psi, and 195/60R15 at 1,190 pounds at 35 psi on certain products.

Those numbers are load-and-pressure limits for specific tires, not a universal pressure setting for every 1998 Mitsubishi. Use the door-jamb label or owner's manual as the baseline for normal operation, then verify that the chosen tire is appropriate for that use. Avoid copying a pressure from one size to another, since a 3000GT performance tire and a Mirage compact tire can require very different inflation strategies even though both are radial.

Before taking a 1998 Mitsubishi on a longer drive, inspect each tire for cracking, cuts, punctures, bulges, uneven wear, and signs of age around the sidewall and tread blocks. Check cold inflation pressure, confirm the valve stems are sound, and make sure the spare is usable and properly inflated if the car still carries one. On tubeless-marked products, bead sealing and slow leaks deserve attention as well.

The tires are only one part of a broader pre-drive check on a vehicle of this age. Wheel bearings, brakes, cooling system condition, belts, hoses, and fluid levels all deserve a look before a highway run, especially on a car that has been sitting. Spending a few extra minutes in the garage can make a bigger difference than choosing between two tire brands once the basics of condition and preparation are handled correctly.