1987 GMC Trucks S15 Tires

A 1987 GMC Trucks S15 may use 195/75R14, 205/75R14, 195/75R15, or 235/75R15, all in radial construction. The correct size depends on the exact sub-model. Many 4x2 trucks use 14-inch sizes, 4x2 H.D. versions use 205/75R14, standard 4x4 models use 195/75R15, and 4x4 Off-Road models use 235/75R15.

That makes sub-model identification more important than simply searching by year and model name. It also means wheel diameter should be verified before ordering, since this truck was fitted with both 14-inch and 15-inch combinations. If the truck has been modified or has replacement wheels, checking the current wheel and tire setup is the safest way to confirm the correct fitment.

The 1987 GMC Trucks S15 uses either a 14-inch or 15-inch rim, depending on the tire size and sub-model. The 195/75R14 and 205/75R14 sizes fit 14-inch wheels, while 195/75R15 and 235/75R15 fit 15-inch wheels. The truck was not limited to one wheel diameter across the entire model line.

Confirming rim diameter should be the first check when replacing tires on this S15. A 14-inch tire and a 15-inch tire are not interchangeable, even if the truck looks similar to another trim. Looking at the existing tire sidewall, measuring the wheel, and confirming whether the truck is a 4x2, 4x2 H.D., 4x4, or 4x4 Off-Road version helps prevent ordering the wrong size.

The 1987 GMC Trucks S15 has more than one tire size because the fitment changes with sub-model and drivetrain. Two-wheel-drive versions, heavier-duty 4x2 models, standard 4x4 trucks, and Off-Road 4x4 versions do not all use the same wheel and tire combination. That is why the S15 range spans four radial sizes across both 14-inch and 15-inch rims.

For the buyer, that means the right tire is tied to the truck's exact configuration rather than the S15 name alone. A trim like Gypsy, High Sierra, or Sierra Classic still needs its drivetrain and package checked. Once that is settled, the decision becomes much easier, because the remaining choices are usually sidewall style, brand, series, and wheel-width compatibility within the proper size.

Start with the exact tire size and wheel diameter used by the truck's sub-model, since the 1987 GMC Trucks S15 can require either a 14-inch or 15-inch fitment. After size is confirmed, compare radial construction details such as rim-width range, maximum load capacity at the stated pressure, sidewall style, and the tire series that best suits the truck's appearance and use.

A 4x2 daily driver, a light restoration, and a 4x4 Off-Road truck may all point toward different product priorities even when the size is known. Some owners will care most about traditional whitewall presentation, while others may focus on a more utility-oriented look. The best comparison usually starts with size and wheel match, then narrows by style and specification.

Tires for the 1987 GMC Trucks S15 are available with several sidewall styles, depending on size. The main choices include narrow whitewall and wide whitewall, with a redline offered in 205/75R14 and a raised white letter option available in 235/75R15. Those differences can change the truck's visual character even when the basic tire size remains correct.

Choosing among sidewall styles depends on how the truck is being presented. A whitewall can give a more traditional or custom-oriented look, while a raised white letter tire suits a more utility or sport-truck presentation. Since sidewall availability changes by tire size, the first step is still confirming the correct fitment for the truck before narrowing the decision to appearance.

Available tire brands for the 1987 GMC Trucks S15 include Coker Classic, American Classic, BFGoodrich, Maxxis, Tornel, and Travelstar. Brand coverage varies by size, so a 205/75R14 buyer will see a different mix than someone shopping for 195/75R15 or 235/75R15. Several of those brands also appear across multiple sidewall styles and tire series.

Brand choice should come after confirming the correct size and wheel diameter. Once that is done, it becomes easier to compare each brand's available series, sidewall treatments, rim-width specifications, and load figures. Rather than treating the decision as a brand contest, it is more useful to match the brand and tire line to the truck's fitment, visual goal, and intended driving use.

A period-style 1987 GMC Trucks S15 usually starts with keeping the correct radial size for the truck's exact sub-model and wheel diameter. From there, the appearance choice often comes down to the sidewall. Narrow whitewalls, wide whitewalls, redline in 205/75R14, and raised white letters in 235/75R15 each create a different visual tone while staying within an appropriate size range.

The most convincing result usually comes from matching the truck's overall build and trim presentation rather than chasing a generic vintage look. A stock-appearing pickup may suit one sidewall treatment, while a custom or Off-Road build may suit another. When exact originality matters, checking marque references or period sales material can help narrow the right appearance details before choosing the tire.

Correct tire fitment matters on a 1987 GMC Trucks S15 restoration because the truck used multiple sizes across different sub-models and wheel diameters. Using the proper 14-inch or 15-inch size helps keep the truck visually balanced and avoids mixing a 4x2, H.D., 4x4, or Off-Road fitment with the wrong setup. Fitment is part of the truck's stance as much as its drivability.

That does not mean every restored S15 has to wear the same sidewall treatment. Once the correct size is established, there is still room to choose among whitewall widths, redline, or raised white letter options where available. The important thing is getting the baseline fitment right first, then selecting the appearance details that best match the truck's restoration direction.

Yes, modifications can affect tire fitment on a 1987 GMC Trucks S15. Aftermarket wheels, altered wheel width, suspension changes, ride-height adjustments, or body modifications can all change what clears the truck properly. That matters even more on an S15 because the original fitments already vary between 14-inch and 15-inch wheel combinations depending on sub-model.

A truck that has been lowered, lifted, or fitted with replacement wheels should be checked at the wheel and vehicle level rather than by year and model alone. Tire size on the sidewall, actual rim diameter, and available clearance at steering lock all deserve a look. That is especially important before moving between standard and more aggressive tire styles within the correct size family.

Before driving a 1987 GMC Trucks S15 on new tires, inspect the wheel diameter and wheel condition, confirm the tire size matches the truck's sub-model, and make sure the tires are inflated appropriately for the product's stated requirements. It is also worth checking for rubbing at full steering lock, especially on 4x4 or Off-Road versions that use 15-inch fitments.

A broader pre-drive inspection should include lug hardware, suspension condition, and any signs of interference around fenders or inner wheelhouses. New tires can highlight worn steering or suspension parts that older tires masked. A short test drive followed by a second visual check is a smart way to confirm that clearance, handling, and inflation are all where they need to be.

Tires on a 1987 GMC Trucks S15 should be inspected regularly, even if the truck is not driven often. A visual check for cracking, cuts, bulges, uneven wear, and air loss is worthwhile before routine use, and especially before a longer drive. Light-use trucks and collector-kept examples can age out a set of tires long before they wear out.

Inspection should include tread condition, sidewall condition, and inflation, along with a quick look at the wheels and valve stems. Storage conditions matter too, since prolonged heat, sunlight, and long idle periods can shorten tire life. On an S15 with multiple possible fitments, each inspection is also a good chance to confirm the truck is still wearing the proper size for its wheel and configuration.