The 1987 Bertone X-1/9 reflects the final chapter of a compact mid-engine Italian sports car that had already earned a loyal following for its sharp proportions, light weight, and nimble road manners. By the Bertone years, the X-1/9 remained a driver-focused car where tire choice still plays a major role in preserving its balanced feel and tidy stance. This exact model uses a 185/60R13 radial tire on a 13-inch wheel. In this fitment, the decision is less about sorting through multiple sizes and more about choosing the right radial within the correct dimensions and intended use. Owners should start with the proper size, then confirm wheel condition, width, and overall setup before road use.
Which Tire Size Is Right for The 1987 Bertone X-1/9
The 1987 Bertone X-1/9 uses one primary tire size: 185/60R13, a radial fitment for a 13-inch rim. The Base sub-model shares this same size, so the main decision is not which size fits, but which tire within that size suits the car's wheel width, driving use, and overall character.
185/60R13 is a metric radial size in which 185 indicates nominal section width in millimeters, 60 is the aspect ratio, and 13 is the wheel diameter in inches. On the 1987 Bertone X-1/9, this radial fitment matches the car's compact wheel-and-tire package and keeps the selection focused on proper dimensions rather than alternate primary sizes. Available choices in this size include a Michelin blackwall radial from the Pilot Exalto PE2 series. It is the size to evaluate when maintaining the X-1/9's intended proportions while also confirming wheel width and overall condition before installation.
Fitment is straightforward for the covered 1987 Bertone X-1/9 sub-models because the same primary tire size carries across them. Checking the exact sub-model still helps confirm that the car remains on the expected 13-inch wheel setup before choosing a replacement tire.
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1987 Bertone X-1/9 Base
The 1987 Bertone X-1/9 Base uses the same 185/60R13 radial fitment as the model core, keeping tire selection simple at the size level. That lets the focus shift to choosing an appropriate radial, confirming wheel width, and making sure the car has not been altered with a different wheel or suspension setup.
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 1987 Bertone X-1/9 Tires for Sale
Available 185/60R13 choices for the 1987 Bertone X-1/9 center on radial construction, with Michelin offering a blackwall option in the Pilot Exalto PE2 series. The main points to compare are proper size, 13-inch rim compatibility, and wheel-width suitability.
These FAQs focus on 1987 Bertone X-1/9 tire size, 13-inch rim fitment, radial selection, product choice, and the basic checks that matter before putting a lightly used sports car back on the road.
Tire Size & Fitment
What tire size fits a 1987 Bertone X-1/9?
The 1987 Bertone X-1/9 uses a 185/60R13 radial tire. That is the primary fitment for this exact year and model, and the covered Base sub-model uses the same size as well, so there is no split fitment to sort through within this application.
That makes the buying decision more about choosing the right tire within 185/60R13 than deciding between multiple primary sizes. It is still worth confirming that the car remains on its 13-inch wheels and has not been changed to a different wheel diameter, since many older sports cars have been modified over time.
What size rim does a 1987 Bertone X-1/9 use?
The 1987 Bertone X-1/9 uses a 13-inch rim with its 185/60R13 tire fitment. In practical terms, the tire size itself confirms the wheel diameter, and available products in this fitment are built around that 13-inch application.
Rim diameter should be confirmed before purchase because a classic or collector car may no longer be wearing its expected wheel setup. Wheel width matters too, especially when comparing available tires, so checking the actual wheel before mounting helps avoid problems with fit, appearance, and handling balance.
What does 185/60R13 mean on a 1987 Bertone X-1/9?
In 185/60R13, the 185 is the tire's nominal width in millimeters, the 60 is the aspect ratio, the R identifies radial construction, and the 13 is the wheel diameter in inches. It is a modern metric radial size rather than an older numeric or alphanumeric bias-ply format.
For an X-1/9 owner, that sizing format makes selection fairly straightforward because the tire dimensions are clearly defined. The important next step is choosing a tire that matches the wheel width and intended use of the car, while also checking that suspension, steering, and body clearances remain appropriate if anything has been changed.
Choosing the Right Tire
What should I consider when choosing a 185/60R13 tire for a 1987 Bertone X-1/9?
Start with the correct size, which is 185/60R13, and keep the focus on radial tires built for a 13-inch rim. From there, the meaningful comparison points are wheel-width compatibility, construction details, brand, tire series, and whether the tire's overall character suits a small mid-engine sports car.
Appearance may matter less here than on a pre-war or muscle-era car, but sidewall style and tread presentation still affect how the X-1/9 looks and feels. It also helps to inspect the wheels themselves before installation, since bent rims, aging valve stems, or long-stored components can undermine a good tire choice.
What sidewall styles are available for 1987 Bertone X-1/9 tires?
The available 185/60R13 product for the 1987 Bertone X-1/9 uses a Blackwall sidewall style. That gives the car a clean, understated presentation that suits a later compact sports car without pushing the look toward a vintage whitewall or stripe treatment.
If appearance matters as much as fitment, sidewall style should be considered alongside the correct size and wheel compatibility rather than treated as a separate decision. On a car like the X-1/9, keeping the sidewall treatment simple can preserve the crisp visual balance created by its low profile and compact 13-inch wheel package.
What brands offer tires for the 1987 Bertone X-1/9?
Michelin is available in the 185/60R13 fitment for the 1987 Bertone X-1/9. The current product assortment for this size centers on a Michelin radial in the Pilot Exalto PE2 series, giving owners a clearly defined option within the proper dimensions.
Since there is not a broad spread of brands in this exact fitment, the decision becomes more about whether the available tire matches the car's wheel width and intended road use. It is smart to verify the actual wheels on the car first, especially on a collector vehicle that may have changed hands or received aftermarket parts years ago.
Restoration & Appearance
Which tire should I choose for a period-style 1987 Bertone X-1/9?
A period-style approach for a 1987 Bertone X-1/9 starts with the correct 185/60R13 size and radial construction. Keeping the original sizing format intact does more for the car's visual balance and stance than chasing an incorrect substitute that happens to fit the wheel opening.
For a restoration-oriented car, tire choice should support the proportions Bertone intended without overstating sidewall styling. Exact originality questions are best settled with marque-specific references and vehicle history, but staying with the proper size, 13-inch rim fitment, and a clean blackwall presentation is a sensible starting point.
Does correct tire fitment matter for a 1987 Bertone X-1/9 restoration?
Yes, correct tire fitment matters because the 1987 Bertone X-1/9 is a small, light sports car whose appearance and response are closely tied to tire size. The proper 185/60R13 fitment helps maintain the car's intended proportions on its 13-inch wheel package.
Using a different size can change the visual relationship between tire, wheel, and body even before it affects road manners. A restoration-minded owner should also pay attention to wheel condition, ride height, and any past modifications, since those details can influence how closely the finished car reflects its original character.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1987 Bertone X-1/9?
Yes, modifications can affect tire fitment on a 1987 Bertone X-1/9 even when the correct original size is 185/60R13. Aftermarket wheels, altered wheel width, suspension changes, or body modifications can all change the clearance and compatibility picture compared with a stock 13-inch setup.
A car that has been lowered or fitted with different wheels should be checked carefully for steering clearance, inner-fender space, and wheel-to-suspension relationship before mounting new tires. On older specialty cars, it is common for changes made years ago to remain undocumented, so a hands-on inspection is more useful than assumptions.
What should I inspect before driving a 1987 Bertone X-1/9 on new tires?
Before driving a 1987 Bertone X-1/9 on new tires, inspect the wheels for damage, confirm the wheel diameter and width, and make sure the tires are mounted in the correct 185/60R13 size. It is also wise to check valve stems, lug hardware, and general suspension condition.
A short collector-car test drive should begin with proper tire pressure and a close look for rubbing, vibration, pulling, or unusual steering feel. Since many X-1/9s see irregular use, fresh tires should be paired with an overall road-readiness check rather than treated as the only maintenance item that matters.
How should 185/60R13 tires on a collector 1987 Bertone X-1/9 be maintained?
185/60R13 tires on a collector 1987 Bertone X-1/9 should be maintained with regular pressure checks, visual inspections for cracking, bulges, cuts, and uneven wear, and periodic evaluation for age-related deterioration. Low-mileage collector use can hide tire aging even when tread depth still looks acceptable.
Storage conditions matter just as much as mileage on a car that spends long periods parked. Keeping the X-1/9 away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires, while routine movement and occasional inspection of wheel and suspension components help catch problems before a longer drive.
