The 1985 Subaru GL-10 came from an era when Subaru was building a strong reputation for compact, practical cars with everyday usability and a distinctly technical character. By the mid-1980s, the GL-10 name also carried a more upscale flavor within the lineup, so getting the tire fitment right matters for both appearance and road manners. This model uses radial tires on 13-inch rims, with 175/70R13 and 185/70R13 fitments depending on sub-model. That means the real choice is not just size, but also matching the correct sub-model while considering blackwall, redline, or wide whitewall presentation where available. A careful selection keeps the car visually appropriate and properly matched to its wheel setup.
Which Tire Size Is Right for The 1985 Subaru GL-10
The 1985 Subaru GL-10 uses two primary tire sizes, and the right one depends on the specific sub-model. Both are metric radial sizes for 13-inch rims, so the first step is confirming whether the car is a Base or Turbo before comparing tire styles, brands, and other product details within the correct size.
The 175/70R13 size uses a modern metric format: 175 is the section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 13 is the wheel diameter in inches. On the 1985 Subaru GL-10, this is a primary radial fitment for the Base sub-model and keeps the sizing in line with the car's compact 13-inch wheel package. Available choices in this size are centered on blackwall radial presentation, including Avon CR6ZZ. It is the size to evaluate when the car still uses the Base model wheel and tire setup.
The 185/70R13 code follows the same metric radial system, with a 185-millimeter section width, a 70-series profile, radial construction, and a 13-inch rim diameter. For the 1985 Subaru GL-10, this size is used on the Turbo sub-model and opens up a wider range of tire choices within the correct fitment. Options include blackwall tires along with redline and wide whitewall versions, plus series such as Silvertown Radial, CR6ZZ, SP Sport Aquajet, Sport Classic, Michelin XDX-B, and Sprint Classic. This size is the one to focus on when the Turbo's wheel setup remains in place.
Sub-model fitment matters on the 1985 Subaru GL-10 because the two covered versions do not share the same tire size. Confirming whether the car is a Base or Turbo is the key step before narrowing the choice to the right radial tire and sidewall style.
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1985 Subaru GL-10 Base
The 1985 Subaru GL-10 Base uses a 175/70R13 radial tire on a 13-inch rim. Tire selection here is mainly about staying with the correct metric radial size and choosing a blackwall option that suits the car's intended road use and overall presentation.
The 1985 Subaru GL-10 Turbo uses a 185/70R13 radial tire on a 13-inch rim. That gives the Turbo owner more visible choice within the correct size, including blackwall, redline, and wide whitewall styles depending on whether the goal is a sportier or more restoration-oriented look.
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 1985 Subaru GL-10 Tires for Sale
Available 1985 Subaru GL-10 tires center on radial 13-inch fitments from Avon, BFGoodrich, Dunlop, Michelin, and Vredestein. The main comparisons are size by sub-model, series selection, blackwall versus redline or wide whitewall styling, and rim-width compatibility within each tire's specifications.
These 1985 Subaru GL-10 tire FAQs focus on the two correct radial sizes, 13-inch rim fitment, sub-model differences, available sidewall styles, and the practical checks that matter before driving on new or replacement tires.
Tire Size & Fitment
What tire size fits a 1985 Subaru GL-10?
A 1985 Subaru GL-10 uses one of two radial tire sizes: 175/70R13 or 185/70R13. The Base sub-model uses 175/70R13, while the Turbo uses 185/70R13, and both sizes are designed for 13-inch rims.
The important step is matching the tire to the actual sub-model and wheel setup on the car. If the vehicle has been changed over to different wheels at some point, confirm the current rim diameter and width before ordering tires, because the Base and Turbo do not share the same primary fitment.
What size rim does a 1985 Subaru GL-10 use?
The covered tire fitments for the 1985 Subaru GL-10 use a 13-inch rim diameter. That applies to both primary sizes, 175/70R13 and 185/70R13, even though the two sub-models use different section widths within that same wheel diameter.
Rim diameter is only part of the fitment picture, so it still helps to verify the wheel width before choosing among available tires. Some products in these sizes have specific rim-width ranges, and a car with aftermarket wheels may need that checked carefully before settling on a particular brand or series.
Do all 1985 Subaru GL-10 sub-models use the same tire size?
No, the 1985 Subaru GL-10 sub-models covered here do not use the same tire size. The Base uses 175/70R13, while the Turbo uses 185/70R13, and both are radial tires mounted on 13-inch rims.
That difference means tire selection starts with identifying the exact version of the car rather than choosing by year and model name alone. A Turbo owner will also see a broader mix of available products and sidewall styles in 185/70R13, while the Base fitment stays more straightforward within 175/70R13.
Choosing the Right Tire
What should I consider when choosing a tire for a 1985 Subaru GL-10?
Start with the correct primary size for the car's sub-model: 175/70R13 for the Base or 185/70R13 for the Turbo. From there, compare radial construction details, rim-width compatibility, sidewall style, and the overall character of the tire series that is available in the correct size.
The best choice depends on how the GL-10 is used and how the owner wants it to look. A blackwall tire keeps the appearance straightforward, while redline or wide whitewall options in 185/70R13 create a more distinctive presentation, so matching the tire to both the wheel setup and the car's style matters.
What sidewall styles are available for 1985 Subaru GL-10 tires?
Sidewall choices for the 1985 Subaru GL-10 include blackwall, redline, and wide whitewall, depending on the tire size. The 175/70R13 fitment is represented by blackwall options, while 185/70R13 includes blackwall tires as well as redline and wide whitewall versions.
That makes sidewall style part of the buying decision, especially on a Turbo using 185/70R13. Owners who want a restrained, European-style look may lean toward blackwall, while redline or wide whitewall can shift the visual character noticeably without changing the underlying need to stay within the correct size and wheel fitment.
What brands offer tires for the 1985 Subaru GL-10?
Tires for the 1985 Subaru GL-10 are available from Avon, BFGoodrich, Dunlop, Michelin, and Vredestein, depending on the size. The 175/70R13 fitment includes Avon, while 185/70R13 opens up a broader range of brands and tire series.
Brand choice is best treated as part of a larger comparison rather than the only factor. Once the correct size is confirmed, look at sidewall style, rim-width requirements where stated, load figures where shown, and the overall look of the tire series so the final choice suits both the car and its intended use.
Restoration & Appearance
Which tire should I choose for a period-style 1985 Subaru GL-10?
A period-style choice starts with using the correct size for the specific 1985 Subaru GL-10 sub-model. That means 175/70R13 for the Base or 185/70R13 for the Turbo, then choosing a radial tire whose sidewall treatment and series character fit the appearance the owner wants to preserve.
Blackwall tires usually maintain a restrained, era-appropriate presentation, while redline or wide whitewall options in 185/70R13 create a more personalized vintage look. When exact originality matters, it is worth checking vehicle-specific historical references or marque guidance before treating any sidewall style or brand as the definitive restoration answer.
How does tire construction affect the appearance of a restored 1985 Subaru GL-10?
On the 1985 Subaru GL-10, the primary fitments are radial tires, so the construction itself already aligns with the car's mid-1980s character. The visual difference comes less from bias-ply versus radial and more from details such as sidewall style, tread presentation, and the overall look of the tire series.
That means a restoration-minded owner should focus on getting the correct size and then selecting the presentation that best matches the car's finish and trim. A simple blackwall can keep the look understated, while redline or wide whitewall in the Turbo size can make the car read differently without changing the underlying radial fitment.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1985 Subaru GL-10?
Yes, modifications can affect tire fitment on a 1985 Subaru GL-10 even when the original tire size is known. Changes such as aftermarket wheels, altered wheel width, suspension work, or body modifications can all influence whether a 175/70R13 or 185/70R13 setup still matches the car properly.
A modified car should be checked at the wheel itself rather than assumed to still follow stock sizing. Confirm the actual rim diameter and width, then look for clearance around fenders and steering components so the chosen tire matches the current setup instead of only the original sub-model specification.
What should I inspect before driving a 1985 Subaru GL-10 on new tires?
Before driving a 1985 Subaru GL-10 on new tires, inspect the wheels, valve stems, and overall tire condition after mounting. Tire pressure should be set correctly, and the car should be checked for obvious clearance issues, uneven stance, or signs that the wheel and tire combination does not sit properly.
A short, careful road test is a smart next step, especially on a collector or low-use car. Pay attention to rubbing during turns, vibration, and any pull that suggests the car needs further inspection, since tire replacement can reveal suspension, alignment, or wheel-condition problems that were already present.
How often should tires on a 1985 Subaru GL-10 be inspected?
Tires on a 1985 Subaru GL-10 should be inspected regularly, especially if the car is driven infrequently. Collector-era vehicles can spend long periods parked, so it helps to check tread, air pressure, sidewall condition, and any signs of cracking, bulges, cuts, or slow air loss before and during use.
Inspection matters just as much as mileage on an older vehicle because age and storage conditions can affect tires even when tread still looks good. A GL-10 kept in a garage should still be looked over before longer drives, and any questionable tire should be evaluated before putting the car back into normal road service.
