1987 GMC Trucks Jimmy Tires

A 1987 GMC Trucks Jimmy can use three radial tire sizes: 215/75R15, 235/75R15, and 31X10.50R15. All three are built for 15-inch rims, and both the Base and Sierra Classic sub-models are associated with the same group of sizes rather than separate trim-specific fitments.

That makes wheel and tire confirmation especially important before choosing a replacement. Check the size currently mounted on the truck, confirm the wheel width, and look at overall clearance if the Jimmy has been lifted, lowered, or fitted with aftermarket wheels. The right choice depends less on trim name and more on the truck's present setup and the style of use you want.

The 1987 GMC Trucks Jimmy uses 15-inch rims with its supported tire sizes. Whether the truck is running 215/75R15, 235/75R15, or 31X10.50R15, the common rim diameter is 15 inches, which keeps the main fitment question centered on width and overall tire size rather than diameter changes.

Even with the same diameter, wheel width still matters because these sizes do not share the same preferred rim-width range. A narrower wheel may suit 215/75R15, while 31X10.50R15 calls for a wider wheel range. Measuring the actual wheels on the truck is worthwhile, especially if the Jimmy has had replacements or aftermarket wheels installed at some point.

The Base and Sierra Classic versions of the 1987 GMC Trucks Jimmy share the same three tire size options: 215/75R15, 235/75R15, and 31X10.50R15. In other words, the covered sub-models do not split into separate size groups, and all of them stay within radial construction on 15-inch wheels.

That does not mean every individual Jimmy left to service today is wearing the same setup. Over the years, many trucks have received different wheels, replacement tires, or suspension changes, so checking the exact size and wheel dimensions on the vehicle remains the smart step. Once that is verified, product choice becomes much easier because trim level itself is not the deciding factor.

Start with the tire size already suited to the truck: 215/75R15, 235/75R15, or 31X10.50R15, all on 15-inch rims. From there, compare the kind of appearance and use the Jimmy needs. The available selection includes traditional street radials with whitewall sidewalls and BFGoodrich All-Terrain T/A KO2 options for a more truck-focused look.

Wheel width is one of the biggest practical checks because the supported products do not all share the same rim-width range. Load capacity, weight, and sidewall style can also influence the final choice, particularly if the Jimmy is used for cruising, restoration-minded presentation, or occasional trail duty. Matching the tire to the truck's actual setup matters more than choosing by appearance alone.

Sidewall choices for the 1987 GMC Trucks Jimmy include narrow whitewall, wide whitewall, RBL, and RWL depending on the tire size and series. The 215/75R15 and 235/75R15 sizes offer the widest appearance range, while 31X10.50R15 is represented by a raised white letter all-terrain design.

That variety lets the Jimmy lean in different visual directions without changing the basic 15-inch wheel format. A whitewall radial gives the truck a more traditional road-going presentation, while raised-letter all-terrain styling looks more at home on a utility-focused build. Sidewall style should still be chosen after confirming size and wheel compatibility, since appearance alone does not settle fitment.

Tires for the 1987 GMC Trucks Jimmy are available from BFGoodrich, Coker Classic, American Classic, Maxxis, Tornel, and Travelstar. Those brands appear across the 215/75R15 and 235/75R15 sizes, while the 31X10.50R15 option is represented by BFGoodrich in the All-Terrain T/A KO2 series.

Brand choice is most useful when it helps narrow down sidewall treatment, tire series, and intended character rather than suggesting one name automatically suits every Jimmy. Some options focus on classic whitewall presentation, and others emphasize a more truck-oriented all-terrain style. Once the correct size is confirmed, comparing the available brand and series combinations becomes a more meaningful next step.

A period-style 1987 GMC Trucks Jimmy usually starts with the tire size that matches the truck's current 15-inch wheel setup, then narrows the choice by sidewall appearance. In 215/75R15 and 235/75R15, the available radials include narrow whitewall and wide whitewall options that can give the Jimmy a more traditional late-1980s road-going presentation.

The right visual result depends on how the truck is being restored or preserved. A stock-appearing Jimmy may look best with a conventional street radial and restrained whitewall, while a more utility-minded build may suit a raised-letter all-terrain tire better. When exact originality matters, compare the tire style with period photos, build documentation, or marque-specific references before making the final selection.

For the 1987 GMC Trucks Jimmy, the primary fitments are radial tires, so the construction itself already aligns with the vehicle's era. The bigger appearance differences come from the tire's size, sidewall treatment, and series character. A whitewall street radial presents very differently from a raised white letter all-terrain, even when both fit the same 15-inch wheel diameter.

That means a restored Jimmy can change personality quickly based on tire presentation alone. A smaller metric radial tends to preserve a more standard road-use look, while a 31X10.50R15 all-terrain gives the truck a noticeably more aggressive stance. Construction is only part of the visual story; tread style and sidewall design often shape the finished appearance just as much.

Yes, modifications can affect tire fitment on a 1987 GMC Trucks Jimmy even though all supported sizes share a 15-inch rim diameter. Wheel width, offset changes, suspension lifts, lowering, replacement springs, and body or fender alterations can all influence how comfortably a 215/75R15, 235/75R15, or 31X10.50R15 tire sits and turns.

That is especially important with the larger 31X10.50R15 size, which asks more from wheel width and available clearance than the smaller metric radials. A Jimmy with aftermarket wheels should be checked at full steering lock and through suspension travel before settling on a tire choice. Measuring the current setup is more reliable than assuming the truck still matches its original wheel configuration.

Before driving a 1987 GMC Trucks Jimmy on new tires, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and make sure each tire is inflated correctly for its application. It is also wise to check for rubbing at the steering stops, especially if the truck uses wider tires or has had changes to ride height or wheel offset.

A road-ready inspection should include the rest of the basics as well: lug hardware condition, valve stems, air retention, and visible clearance around suspension and fender areas. On an older utility vehicle, worn steering or suspension components can also affect how a fresh set of tires behaves. A short, careful test drive helps reveal any vibration, pull, or interference before regular use.

Tires on a collector 1987 GMC Trucks Jimmy should be inspected regularly for air loss, tread wear, sidewall cracking, bulges, and cuts, even if the truck is driven only occasionally. Collector SUVs often spend long periods parked, so tire condition can decline from age and storage environment as much as from miles on the road.

Keeping the Jimmy stored away from prolonged sunlight, heat, moisture, and ozone sources helps preserve the tires between drives. Pressure should be checked before road use rather than assumed, and the truck should be looked over for flat-spotting or any visible change in stance after sitting. Older vehicles benefit from more frequent visual inspection because low annual mileage can hide developing tire issues.