Subaru GL-10 Tires

Subaru GL-10 uses two tire sizes across the 1985 through 1989 model years: 175/70R13 and 185/70R13. Both are metric radial sizes built for 13-inch rims. The 175/70R13 products shown here use 13-inch wheels with a listed rim width range of 4.5 to 6.0 inches, while 185/70R13 products use 13-inch wheels with listed rim width ranges that run from 4.5 to 6.5 inches depending on the tire.

That means the key step is not just identifying the year, but confirming which size is actually fitted to the car and whether the wheel width matches the tire you want to use. A Subaru GL-10 that currently wears 175/70R13 should not automatically be switched to 185/70R13 without checking wheel width, clearance, and the original intended setup.

A 1985 Subaru GL-10 can appear with either 175/70R13 or 185/70R13, and the same two-size pattern continues through every model year from 1985 to 1989. Because both sizes use the same 13-inch rim diameter and the same construction type, the split points to a configuration difference rather than a wheel-diameter change. That usually means the specific wheel package or trim-related setup on the car matters more than the calendar year by itself.

The practical takeaway is to inspect the tire sidewall already on the car, measure the wheel if needed, and compare against any original paperwork or long-term ownership records. When two sizes share the same year range, choosing by year alone can easily lead to the wrong section width even though the rim diameter is correct.

The Subaru GL-10 sizes listed here both use a 13-inch rim diameter. That remains consistent across the two available sizes, 175/70R13 and 185/70R13, and across the full 1985 to 1989 production span shown here. There is no wheel-diameter change within this fitment group, only a width difference between the two tire sizes.

Even with the same rim diameter, wheel width still matters. The narrower 175/70R13 tires shown here fit rims from 4.5 to 6.0 inches wide, while several 185/70R13 options are intended for widths up to 6.5 inches. Confirming both diameter and width helps you avoid a mismatch that can affect appearance, steering feel, and sidewall shape.

A 1987 Subaru GL-10 can use either 175/70R13 or 185/70R13, so the correct tire size has to be confirmed on the individual car. Both sizes belong to the same year, both are radial, and both mount on 13-inch rims, which means the decision comes down to the wheel and tire package actually fitted. The tire sidewall, wheel width, spare tire information, and any original service records are the best immediate references.

Once you confirm the size, compare it with the wheel width range of the tire you plan to use. That step matters because a Subaru GL-10 with a narrower wheel may be better matched to 175/70R13, while a wider wheel may suit 185/70R13. Treat the existing verified setup on the car as your starting point rather than assuming every GL-10 of that year was identical.

Subaru GL-10 tires in these sizes are available in several sidewall styles. The 175/70R13 option listed here is blackwall, while 185/70R13 includes blackwall, redline, and wide whitewall variations. That gives Subaru GL-10 owners a choice between a more factory-like understated look and a more customized or period-styled presentation.

For a preservation-minded GL-10, blackwall is usually the most natural visual fit for an 1980s Japanese car. Redline and wide whitewall versions can still be useful when the goal is a personalized period look, but they change the car's presentation more noticeably. If appearance matters as much as fitment, choose the sidewall style only after confirming the correct size.

The Subaru GL-10 tire options listed here come from Avon, BFGoodrich, Dunlop, Michelin, and Vredestein. Avon appears in both 175/70R13 and 185/70R13, while BFGoodrich, Dunlop, Michelin, and Vredestein are represented in 185/70R13. All of the listed products are radial tires, but they differ in sidewall styling, series, and in some cases speed-oriented period character.

Brand choice should come after size confirmation, not before. Once the size is settled, compare the appearance you want, the rim-width compatibility, and whether the tire's overall character suits a stock-style touring GL-10 or a more enthusiast-focused car. On a Subaru GL-10, the right brand is the one that matches both the wheel setup and the intended use.

Subaru GL-10 tires here appear in several distinct series, including Avon CR6ZZ, BFGoodrich Silvertown Radial, Dunlop SP Sport Aquajet, Dunlop Sport Classic, Michelin XDX-B, and Vredestein Sprint Classic. All are radial tires, but they represent different design themes ranging from straightforward blackwall fitments to period-styled collector radials and sport-oriented classic patterns. The series split is strongest in 185/70R13, where the range is much broader than in 175/70R13.

That variety matters because two tires of the same size can present the car very differently. A Subaru GL-10 owner focused on a clean OE-style look may lean toward blackwall options, while someone building a more stylized period car may prefer redline or whitewall presentation. Start with the correct size, then choose the series that best matches the way the car will look and be used.

A Subaru GL-10 should be stored on a clean, dry surface away from direct sunlight, ozone sources, and major temperature swings. Keeping the tires properly inflated during storage helps preserve sidewall shape and reduces flat spotting, especially on a collector car that may sit for long periods. If the car will be parked for an extended season, moving it occasionally or supporting it to reduce load can help.

Good storage habits matter even more on older-size collector tires because many Subaru GL-10 owners use the car intermittently rather than daily. Check inflation before and after storage, keep petroleum products away from the rubber, and inspect the tread and sidewalls when the car comes back into use. Long life on a collector tire usually comes from climate control, stable pressure, and regular attention.

Tires on a Subaru GL-10 should be inspected before every meaningful drive and more thoroughly at regular service intervals. Look for cracking, bulges, punctures, uneven wear, curb damage, and any sign that the tire has been run underinflated. Because Subaru GL-10 can use two different section widths on the same 13-inch rim diameter, it is also worth confirming that all four tires match the intended setup.

Frequent inspection is especially important on collector vehicles that spend long periods parked and then return to road use. A tire can look acceptable from a distance yet show age-related issues once closely examined. Make tread, sidewall, valve stem, and inflation checks part of the routine before highway use, and have any suspicious condition reviewed before relying on the car for more than a short local drive.

A Subaru GL-10 tire should be replaced when age, cracking, internal damage, vibration, impact damage, or persistent air loss point to deterioration even if tread depth still looks usable. Collector cars often age out their tires before they wear them out. That is especially true on cars driven occasionally, where long calendar age and storage conditions can be harder on the tire than mileage.

The practical rule is to judge the tire by condition and age as much as by remaining tread. If a Subaru GL-10 has sat for years, has unknown tire age, or shows sidewall checking, treat replacement as preventive maintenance rather than waiting for visible failure. On a low-use collector car, conservative replacement timing is usually far wiser than trying to extract every last mile from old rubber.

Subaru GL-10 is associated here with two original-size patterns across the 1985 to 1989 range: 175/70R13 and 185/70R13. Both are metric radial 13-inch sizes, and both appear throughout the production run rather than belonging to a neat early-versus-late split. That means originality on a specific Subaru GL-10 depends on how that individual car was equipped rather than on year alone.

For a restoration, the best path is to verify the tire information decal, original paperwork, old photos, or marque-community knowledge tied to the exact car. Using the correct width matters because it affects both stance and authenticity. If the goal is factory-faithful presentation, confirm the original size first and then select a sidewall style that fits the period character of the GL-10.

Correct tire fitment can affect how a Subaru GL-10 is judged, presented, and valued because tire size and sidewall style change the car's overall stance and period appearance. A car fitted with the right 13-inch size for its original configuration tends to look more coherent than one wearing a size chosen only because it happens to mount. On an increasingly collectible 1980s Subaru, details like that matter.

Judging standards vary, but serious enthusiasts usually notice whether the tire width and sidewall treatment suit the car. A Subaru GL-10 restored to stock style will generally benefit from matching the verified original size and a restrained sidewall appearance. If the car is being prepared for events or marque-focused display, confirm the exact configuration before making cosmetic tire choices.

Subaru GL-10 tire options here include blackwall, redline, and wide whitewall styles, but blackwall is the closest visual fit for most 1985 to 1989 GL-10 restorations. That is especially true because blackwall appears in both available sizes and across several of the listed radial series. Redline and wide whitewall are available in 185/70R13, but they create a more customized look.

A restoration-minded Subaru GL-10 owner should usually decide authenticity first and style second. If the car is being preserved in stock-looking form, blackwall will generally keep the appearance in character with the era. Redline or whitewall may still be attractive on a personalized build, but they move the finished car away from a typical original presentation.

The radial tires listed for Subaru GL-10 are intended for road use when they are the correct size for the car, properly fitted to the wheel, and in sound condition. Subaru GL-10 uses modern metric radial sizing by collector-car standards, and the available products here are all radial constructions for 13-inch rims. Public-road safety still depends on the condition of the entire vehicle, not the tires alone.

Before regular driving, make sure the Subaru GL-10 has matching tires, proper inflation, no age-related cracking, and no wheel damage or suspension issues that could cause irregular wear. A freshly mounted collector tire does not compensate for old brakes, loose steering, or worn alignment parts. Safe road use comes from treating the tire as one part of the whole system.

Before driving a Subaru GL-10, inspect tire pressure, tread condition, sidewalls, valve stems, and overall age, then confirm that the tire size matches the wheel setup on the car. Since Subaru GL-10 can use either 175/70R13 or 185/70R13, it is worth verifying that the car is not carrying a mixed-size arrangement unless there is a deliberate and correct reason for it. Also check for vibration clues, visible uneven wear, or any sign of impact damage.

A short pre-drive inspection is especially worthwhile on a collector Subaru that may have sat for days or weeks. Confirm lug torque, look under the car for fluid leaks that may reach the tires, and pay attention to how the car feels in the first few miles. If the Subaru GL-10 pulls, wanders, or shakes, stop and investigate before continuing at speed.

A Subaru GL-10 should be driven at speeds that match the condition of its tires, the condition of the car, and the capability of the specific tire fitted. Several of the listed 185/70R13 options carry performance-oriented service descriptions, but age, storage history, and mechanical condition matter just as much as the marking on the sidewall. A collector car on older or uncertain tires should always be treated conservatively.

The practical approach is to build confidence gradually rather than assuming highway-speed use is appropriate the moment the car is back on the road. If the Subaru GL-10 has freshly fitted, properly matched tires and a sound chassis, normal use is more realistic than on much older vintage cars. Even so, any vibration, noise, or instability should be treated as a reason to reduce speed and recheck the setup.