By 1988, Bertone carried the X-1/9 forward as a distinctive Italian two-seat sports car with crisp wedge styling, mid-engine balance, and a character that appealed to enthusiasts who wanted something more exotic than the typical small import. The brand's U.S. presence was narrow at this point, so tire fitment for 1988 Bertone is refreshingly straightforward compared with broader-volume makes. Only one model is covered, and it uses a single radial size, so the main choice is not between multiple fitments but between confirming the exact model and selecting a tire that suits how the car will be driven. Start by verifying that your car is a 1988 Bertone X-1/9 and that it still wears 13-inch wheels.
Which Tire Size Is Right for Your 1988 Bertone
One tire size fits 1988 Bertone vehicles, and it applies to the X-1/9. Because there is only one size and one rim diameter in use, the key step is confirming that your car remains on its correct 13-inch wheels before choosing a product. Understanding that distinction first helps you match the tire to the car without wasting time on sizes that belong to other applications.
Year(s): 1988|Fit(s): X-1/9|Construction: Radial|Rim: 13 in
A 185/60R13 uses a 185-millimeter section width, a 60-series aspect ratio, radial construction, and a 13-inch rim diameter. This size is available from Michelin in a Blackwall tubeless design, with an H speed rating that carries a 130 mph ceiling. Because it is specific to the 1988 Bertone X-1/9 rather than shared across a wider model range, it is the direct fitment to confirm first. Drivers who want a modern radial in the factory-style size for regular road use should focus here.
One model is covered for 1988 Bertone. Tire choice does not vary across a broader model range here, which makes identification simpler: once you confirm that you have an X-1/9, the focus shifts from model differences to preserving the car's intended stance and handling balance with the correct size. Select the model below for model-specific fitment history and products.
1988 Bertone X-1/9
The 1988 Bertone X-1/9 was the late U.S.-market continuation of a compact Italian sports car known for its removable targa roof, mid-engine layout, and sharp Bertone styling. Its tire fitment mounts on 13-inch wheels, which suits the car's light, agile personality and period proportions. For most owners, the important step is keeping the correct overall size relationship rather than substituting a different rim diameter.
One product is available across one tire size for 1988 Bertone vehicles. The 185/60R13 comes in radial construction from Michelin with a Blackwall sidewall, so the main step before selecting is confirming that your X-1/9 still uses the correct 13-inch wheels.
These answers focus on the single 185/60R13 fitment used by 1988 Bertone X-1/9 models, including what the size means, which wheel width it suits, how tubeless radial setup works, and what to watch on a lightly used collector sports car.
Size Basics & Fitment
What tire sizes fit 1988 Bertone vehicles?
1988 Bertone vehicles use one tire size: 185/60R13, and that fitment applies to the Bertone X-1/9. It mounts on a 13-inch rim, and the tire products available in this size suit wheel widths from 5 to 6.5 inches. There is no split between multiple Bertone models or alternate factory-year sizes at this year-make level.
That makes the research process simpler than it is for many classic makes. The real fitment question is whether your 1988 Bertone X-1/9 still has its correct 13-inch wheels and whether any previous owner changed wheel diameter. If the car has been modified, confirm the actual wheel before choosing a tire; if it remains stock in wheel size, 185/60R13 is the place to focus.
What does 185/60R13 mean on a 1988 Bertone tire?
On a 1988 Bertone, 185/60R13 is a modern metric radial size. The 185 is the nominal section width in millimeters, 60 is the aspect ratio, R identifies radial construction, and 13 is the wheel diameter in inches. In the available fitment, that size also appears with an 80H service description, meaning load index 80 and an H speed rating.
For an X-1/9 owner, that code matters because it ties together the car's low-profile stance, steering feel, and wheel diameter. It is not interchangeable with older numeric or alphanumeric sizing conventions used on earlier collector cars. If you are comparing sidewall markings on the car now, match the full size first, then review the load and speed marking to make sure the replacement stays in the same general category.
Do all 1988 Bertone models use the same tire size?
Yes. The 1988 Bertone range covered here consists of the X-1/9, and it uses 185/60R13. There is no model-to-model size variation to sort through at this year and make, so tire selection starts from a single fitment rather than a menu of alternate diameters or constructions.
That gives owners a clearer path than they often get with larger manufacturers. Instead of choosing between several sizes, you can spend your time confirming wheel originality, checking the condition of the 13-inch rims, and deciding which specific tire characteristics matter most for your driving. If your car has aftermarket wheels, use the wheel on the car as the final authority before ordering.
Buying the Right Tire
What sidewall styles are available for 1988 Bertone tires?
1988 Bertone tires in 185/60R13 are available with a Blackwall sidewall. That look suits the late-1980s character of the X-1/9, which came from an era when sporty imported cars typically wore understated black sidewalls rather than wide whitewalls or other prewar and mid-century styling cues.
For most Bertone X-1/9 owners, that means appearance is straightforward: a Blackwall tire keeps the car visually appropriate without competing with the wedge-shaped body and compact 13-inch wheel package. If originality and period presentation matter to you, keeping the sidewall style in step with the car's late-classic import identity is just as important as choosing the right numeric size.
What brands make tires for 1988 Bertone vehicles?
Michelin makes tires for 1988 Bertone vehicles in the 185/60R13 size. The available fitment comes from the Michelin Pilot Exalto PE2 line, built as a radial Blackwall tire for a 13-inch wheel. That keeps the year-make coverage focused and easy to understand.
Michelin is a natural fit for a car like the X-1/9 because European sports cars of this era are often best served by a tire with a similarly European road-car character. The bigger point for buyers is to stay with the correct size and wheel-width range first. Once that is confirmed, brand choice becomes less about sorting through many options and more about choosing a tire that matches the car's intended use.
What is the difference between Michelin Pilot Exalto PE2 and other 1988 Bertone tire choices?
For 1988 Bertone, the available fitment centers on the Michelin Pilot Exalto PE2 in 185/60R13. It is a radial, Blackwall, tubeless tire with an H speed rating and a recommended rim-width range of 5 to 6.5 inches. Within this year-make coverage, there is not a parallel second product family in the same size to compare side by side.
That means the buying decision is less about choosing between multiple competing tread families and more about confirming compatibility with your existing wheels and your intended use. If your X-1/9 is a stock-wheel road car, the key checks are size, wheel width, age of the existing tires, and whether the car has any suspension or wheel modifications that would call for a closer fitment review.
Fitting & Setup
What rim width do 1988 Bertone tires require?
1988 Bertone tires in 185/60R13 fit a 13-inch rim and suit wheel widths from 5 to 6.5 inches. That range applies to the X-1/9 fitment covered here. Rim width matters because it influences how the tire seats, how the sidewall stands, and how closely the tire behaves as intended.
If your X-1/9 still wears original-style wheels, it will often fall comfortably within that range, but it is still worth measuring or confirming the wheel before replacing old rubber. A wheel that is too narrow or too wide for the tire can change appearance and response. Confirming rim width first is especially smart on cars that may have seen aftermarket wheel swaps over the years.
Do 1988 Bertone tires require inner tubes?
The 185/60R13 fitment for 1988 Bertone is available as a tubeless tire. The sidewall marking includes TL, which identifies tubeless construction. That is consistent with a late-1980s passenger-car radial and differs from many earlier collector applications that routinely used tube-type tires.
Even with a tubeless tire, the wheel itself still needs to be in suitable condition for a proper seal. Check the bead seats for corrosion, confirm valve stem condition, and make sure the rim has not been bent or damaged. On a car that has spent long periods parked, sealing surfaces can become a bigger issue than the tire size itself.
Can the original 1988 Bertone wheels be used with all tire sizes?
1988 Bertone uses one tire size rather than several, so the question is really whether the original X-1/9 wheels can be used with 185/60R13. Yes, provided the car still has 13-inch wheels that fall within the proper 5 to 6.5 inch rim-width range and remain in sound condition.
That is helpful for owners preserving stock appearance, because there is no need to sort through alternate original diameters. The practical step is to inspect each wheel for trueness, bead-seat condition, and prior repair before mounting fresh tires. A classic sports car can feel surprisingly different when a bent or heavily corroded wheel is mistaken for a tire problem.
Maintenance, Storage & Longevity
How should I store a 1988 Bertone when the tires are fitted?
A 1988 Bertone should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, and other ozone sources that accelerate rubber aging. Keep the tires properly inflated, park on a clean surface, and move the car periodically if possible. Radial tires generally resist prolonged flat-spotting better than older bias-ply designs, but they still age from time and environment.
For an X-1/9 that spends long stretches off the road, storage habits have a real effect on sidewall life and ride quality. If the car will sit for months, many owners either roll it occasionally or support it in a way that reduces prolonged stress on one contact patch. Covering the car helps the body, but protecting the tires from heat and ozone is just as important.
How long do tires on a 1988 Bertone typically last?
Tires on a 1988 Bertone should be judged more by age and condition than by mileage alone. A collector car can show very little tread wear and still have tires that are old enough to need close evaluation. Many owners begin taking tire age seriously at about five to seven years and consider replacement around ten years, using the DOT date code and overall condition as guides.
That matters on an X-1/9 because low annual mileage can create a false sense of security. A lightly driven sports car may still be riding on hardened rubber that no longer behaves as it should. If the car is new to you, checking the date code is one of the first maintenance steps worth taking before any longer road use.
How often should tires on a 1988 Bertone be inspected?
Tires on a 1988 Bertone should be inspected before every drive and again before any extended outing. Look for sidewall cracking, cuts, bulges, embedded debris, uneven tread wear, and any sign of slow pressure loss. Because the X-1/9 uses a tubeless radial here, valve stem condition and bead sealing are also worth checking.
Frequent inspection is especially important on a classic car that may alternate between short local drives and long periods of storage. Problems often appear with age before they show up as obvious tread wear. A quick walk-around and pressure check can catch issues early and helps separate a genuine tire concern from suspension, alignment, or wheel-condition problems.
Restoration & Authenticity
What tires were originally fitted to the 1988 Bertone X-1/9?
A 1988 Bertone X-1/9 belongs to an era when radial construction was already standard practice for passenger cars, and the correct year-make fitment here is 185/60R13. That makes a radial tire in that size the right starting point for an owner seeking factory-style fitment. Original-equipment branding could vary by market and delivery history, so size and construction matter more than assuming one universal nameplate.
For restoration work, begin with the exact size, 13-inch wheel diameter, and an era-appropriate sidewall presentation. Then compare your car's surviving manuals, window sticker history, or marque-club knowledge if you want to chase market-specific authenticity. That approach keeps you grounded in what is correct for the car without overreaching into assumptions that may not apply to every X-1/9.
Does correct tire fitment matter for showing a 1988 Bertone?
Yes, correct tire fitment matters when showing a 1988 Bertone. Judges and knowledgeable enthusiasts tend to notice whether the car carries the proper overall size, the right construction type for the era, and a sidewall style that suits the period. On a late-1980s Italian sports car like the X-1/9, an appropriate metric radial and restrained Blackwall presentation usually align better with authentic appearance than an obviously out-of-period style.
That does not mean every event scores tires the same way, but tire choice can influence how complete the restoration feels. If you are preparing for marque judging, check club standards and period literature before finalizing details. Even when a tire functions well, a visibly incorrect size or era-mismatched sidewall can distract from an otherwise careful restoration.
How important is it to keep the original-style tire size on a 1988 Bertone?
Keeping the original-style tire size is important on a 1988 Bertone because the X-1/9 is a small, light sports car whose proportions and responses are closely tied to its wheel-and-tire package. The correct year-make fitment here is 185/60R13, which preserves the intended relationship between sidewall height, wheel diameter, and the car's visual stance.
For a restoration, that size continuity matters both aesthetically and dynamically. Moving away from the proper size can alter the look of the wheel opening, the speedometer relationship, and the car's period feel even before you consider any handling changes. If authenticity is part of your goal, staying with the correct size is one of the simplest ways to keep the finished car believable.
Safety & Road Use
Are 1988 Bertone tires safe for highway driving?
1988 Bertone tires in 185/60R13 are available with an H speed rating, which carries a 130 mph ceiling. That is comfortably above normal U.S. highway speeds, so the tire itself is not the limiting factor in ordinary road use when it is in sound condition, properly inflated, and correctly mounted. On a classic X-1/9, overall mechanical condition often matters just as much as the tire's rating.
A highway-ready tire does not automatically make the entire car highway-ready. Before sustained road use, consider the age of the tires, wheel condition, alignment, braking system, suspension bushings, and cooling system health. A well-sorted late-1980s sports car can be enjoyable on modern roads, but safe use depends on the full vehicle being prepared, not only the speed letter on the sidewall.
What inflation pressure should I use for 1988 Bertone tires?
Inflation pressure for 1988 Bertone tires should follow the vehicle manufacturer's recommendation for the X-1/9 and the tire maker's guidance for the specific 185/60R13 tire. The available 185/60R13 fitment carries an 80H service description, but that alone is not a substitute for the car's intended front-to-rear pressure settings. Pressure should never be borrowed from a different size or unrelated vehicle.
Use the owner's manual, door-jamb label if present, or a trusted marque source to establish the baseline cold pressures for your car. Then verify that the tire is in the proper load and service category for the application. Getting inflation right affects tread wear, steering response, and ride quality, and it is one of the simplest ways to help a fresh set of tires perform as intended.
What should I check before taking a 1988 Bertone on a longer drive?
Before taking a 1988 Bertone on a longer drive, inspect each tire for cracking, cuts, bulges, punctures, uneven wear, and proper cold pressure. Check valve stems, verify that the wheels are secure and free of visible damage, and make sure the spare is usable if the car still carries one. On a low-slung sports car, also look for rubbing marks that might point to prior fitment or suspension issues.
The tires are only one part of a sensible pre-trip routine on an older X-1/9. Brake function, coolant condition, belts, hoses, lights, and fluid levels deserve the same attention, especially if the car has been sitting. A careful inspection before departure helps you catch age-related problems at home rather than discovering them after the first hour on the road.
