The 1986 Chevrolet Trucks K20 Suburban sits in the era when heavy-duty full-size SUVs were expected to carry passengers, gear, and rough-road capability in one package. Its three-quarter-ton underpinnings make tire choice more than a cosmetic decision, especially for owners who still use these trucks for regular road miles or light utility work. The 1986 Chevrolet Trucks K20 Suburban uses a 235/85R16 radial tire on a 16-inch rim. In this size, the available option carries a traditional truck look with raised white letters and an all-terrain character. The real focus is confirming wheel compatibility and choosing a tire that suits both the truck's stance and intended use.
Which Tire Size Is Right for The 1986 Chevrolet Trucks K20 Suburban
The 1986 Chevrolet Trucks K20 Suburban uses one primary tire size: 235/85R16. It is a radial fitment on a 16-inch rim, and that same size carries across the covered Custom, Scottsdale, and Silverado configurations. Since the size itself is straightforward, the main decision becomes choosing the right tire style and specification within 235/85R16, while confirming wheel width and overall truck setup.
235/85R16 is a metric radial size in which 235 refers to nominal section width in millimeters, 85 is the aspect ratio, R identifies radial construction, and 16 is the wheel diameter in inches. On the 1986 Chevrolet Trucks K20 Suburban, that radial construction matches the truck's later-classic heavy-duty utility character and keeps the fitment in a modern truck sizing format. The available choice in this size comes from BFGoodrich in the All Terrain TA KO2 series with raised white letters. It is the size to evaluate when maintaining the Suburban's correct wheel diameter while choosing for road use, stance, and general truck appearance.
1986 Chevrolet Trucks K20 Suburban Sub-Model Tires
Tire fitment is straightforward across the covered 1986 Chevrolet Trucks K20 Suburban sub-models because each one uses the same 235/85R16 radial size. Checking the exact sub-model still helps confirm whether you are looking at a full vehicle listing or front and rear positions shown separately.
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1986 Chevrolet Trucks K20 Suburban Custom
The 1986 Chevrolet Trucks K20 Suburban Custom uses the same 235/85R16 radial fitment as the rest of the covered lineup. That keeps tire selection centered on wheel compatibility, load-oriented truck specifications, and the sidewall style or tread character you want on the vehicle.
The 1986 Chevrolet Trucks K20 Suburban Custom Front position uses 235/85R16 radial tires. That means front tire replacement should stay focused on the correct 16-inch wheel setup and on matching the tire's intended road and truck-use character to the rest of the vehicle.
The 1986 Chevrolet Trucks K20 Suburban Custom Rear position also uses 235/85R16 radial tires. Rear tire selection should remain consistent with the truck's wheel specification and with the overall look and use pattern you want across the full set.
The 1986 Chevrolet Trucks K20 Suburban Scottsdale uses 235/85R16 in radial construction, just like the other covered sub-models. With the size already settled, the practical decision becomes choosing the tire series and sidewall presentation that best suit the truck's use and appearance.
1986 Chevrolet Trucks K20 Suburban Scottsdale Front
The 1986 Chevrolet Trucks K20 Suburban Scottsdale Front fitment remains 235/85R16 radial. Tire choice here should focus on maintaining the correct wheel diameter and matching the front tire's construction and style to the rest of the Suburban's setup.
1986 Chevrolet Trucks K20 Suburban Scottsdale Rear
The 1986 Chevrolet Trucks K20 Suburban Scottsdale Rear position uses the same 235/85R16 radial size. That keeps rear fitment simple, but it is still worth confirming wheel width and overall tire matching before replacement.
The 1986 Chevrolet Trucks K20 Suburban Silverado also uses 235/85R16 radial tires. Since the size does not change, buyers can concentrate on selecting the tire's truck-oriented character, sidewall style, and wheel compatibility rather than sorting through multiple fitments.
1986 Chevrolet Trucks K20 Suburban Silverado Front
The 1986 Chevrolet Trucks K20 Suburban Silverado Front fitment is 235/85R16 in radial construction. That makes it important to confirm the 16-inch wheel setup and keep the front replacement consistent with the tire choice used across the vehicle.
The 1986 Chevrolet Trucks K20 Suburban Silverado Rear position uses 235/85R16 radial tires as well. Rear selection is therefore less about finding the size and more about keeping the truck's tire set matched in specification, appearance, and intended use.
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 1986 Chevrolet Trucks K20 Suburban Tires for Sale
Available 235/85R16 choices for the 1986 Chevrolet Trucks K20 Suburban currently center on a BFGoodrich radial in the All Terrain TA KO2 series. Buyers can compare truck-focused details such as raised white letter sidewalls, rim-width compatibility, load specification, and overall all-terrain character.
Owners of a 1986 Chevrolet Trucks K20 Suburban usually want clear answers on 235/85R16 fitment, 16-inch wheel requirements, product style differences, and the checks worth making before putting a heavy-duty Suburban back on the road.
Tire Size & Fitment
What tire size fits a 1986 Chevrolet Trucks K20 Suburban?
The 1986 Chevrolet Trucks K20 Suburban uses a 235/85R16 radial tire. That is the primary fitment across the covered Custom, Scottsdale, and Silverado versions, including the front and rear position listings shown separately.
Because this Suburban uses one main size, the job is less about sorting through multiple fitments and more about confirming the truck still has the correct 16-inch wheels. If the vehicle has aftermarket wheels, suspension changes, or a mixed set of tires, check the actual wheel width and overall clearance before choosing a replacement.
What size rim does a 1986 Chevrolet Trucks K20 Suburban use?
The 1986 Chevrolet Trucks K20 Suburban uses a 16-inch rim with its 235/85R16 tire size. In the available product selection for this fitment, the supported rim-width range is 6.0 to 7.5 inches.
Rim diameter is the first thing to confirm, because a 235/85R16 tire belongs on a 16-inch wheel. Width matters too, especially on a heavier truck, so it is worth checking the stamping on the wheel or measuring it if the Suburban has replacement wheels from a different application.
Do all 1986 Chevrolet Trucks K20 Suburban sub-models use the same tire size?
Yes. The covered 1986 Chevrolet Trucks K20 Suburban Custom, Scottsdale, and Silverado fitments all use 235/85R16 radial tires. The separate front and rear entries shown for those sub-models stay with that same size as well.
That consistency simplifies shopping, but it is still smart to look at the truck itself before replacing tires. Older Suburbans are often changed over to different wheels or lifted and lowered over time, so confirming the actual wheel setup helps prevent buying a correct-on-paper size for a truck that has been modified.
Choosing the Right Tire
What should I consider when choosing a 235/85R16 tire for a 1986 Chevrolet Trucks K20 Suburban?
Start with the fundamentals: the correct size is 235/85R16, the construction is radial, and the wheel diameter is 16 inches. On a K20 Suburban, it also makes sense to pay attention to truck-oriented details such as load specification, rim-width compatibility, and the overall character of the tire.
Appearance and use both matter on a vehicle like this. A raised white letter all-terrain tire gives the truck a more traditional 1980s heavy-duty look, while the wheel width and the way the Suburban is actually driven should stay part of the decision so the finished setup looks right and functions correctly.
What sidewall styles are available for 1986 Chevrolet Trucks K20 Suburban tires?
The available 235/85R16 product for the 1986 Chevrolet Trucks K20 Suburban uses an RWL sidewall, which means raised white letters. That sidewall treatment gives the tire a more visible, truck-oriented presentation than a plain blackwall.
Sidewall style affects appearance more than fitment, but it can make a big difference in how a square-body Suburban looks. Buyers trying to keep a period-style truck presence often pay close attention to whether the tire has visible lettering, especially when the vehicle still wears stock-style steel wheels or classic truck trim.
What brands offer tires for the 1986 Chevrolet Trucks K20 Suburban?
The available fitment in 235/85R16 for the 1986 Chevrolet Trucks K20 Suburban includes a BFGoodrich radial tire. It is part of the All Terrain TA KO2 series and carries a raised white letter sidewall treatment.
Brand is only one part of the decision, so it helps to compare the rest of the specification as well. On a heavier Suburban, details such as rim-width compatibility, load figure, and the tire's overall truck-use character are just as important as the name molded into the sidewall.
Restoration & Appearance
Which tire should I choose for a period-style 1986 Chevrolet Trucks K20 Suburban?
A period-style choice for a 1986 Chevrolet Trucks K20 Suburban starts with the correct 235/85R16 radial size on a 16-inch wheel. From there, a truck-oriented radial with a traditional sidewall presentation and a stance that suits a three-quarter-ton Suburban is usually the most natural direction.
The available BFGoodrich All Terrain TA KO2 with raised white letters leans into that classic truck look without turning the page into a restoration claim. Buyers chasing exact historical presentation should still compare against original brochures, surviving examples, or marque-specific references before making a final appearance decision.
Does correct tire fitment matter for a 1986 Chevrolet Trucks K20 Suburban restoration?
Yes, correct tire fitment matters because tire size strongly affects the stance, proportions, and visual character of a restored 1986 Chevrolet Trucks K20 Suburban. Staying with the proper 235/85R16 radial format helps preserve the truck's intended heavy-duty look on a 16-inch wheel.
Fitment matters mechanically as well as visually. A tire that departs from the proper wheel diameter or does not suit the wheel width can create an awkward appearance and complicate clearance, so restoration-minded buyers usually do best by confirming the actual wheels on the truck before choosing a tire.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1986 Chevrolet Trucks K20 Suburban?
Yes. Even though the standard fitment is 235/85R16, wheel swaps, different wheel widths, suspension lifts, lowering changes, and body alterations can all affect how that size sits on a 1986 Chevrolet Trucks K20 Suburban. Older trucks are often changed over the years, so the current setup may not match stock dimensions.
That is why checking the actual wheel diameter and width on the vehicle matters before replacing tires. Clearance at the fenders, steering components, and suspension should also be reviewed, especially if the Suburban has been modified for off-road use, towing duty, or a more custom stance.
What should I inspect before driving a 1986 Chevrolet Trucks K20 Suburban on new tires?
Before road use, inspect the wheels for the correct 16-inch diameter and for any damage or corrosion that could affect bead seating. Tire pressure, lug torque, valve stems, and the condition of steering and suspension components are also worth checking on a 1986 Chevrolet Trucks K20 Suburban.
A heavy-duty Suburban can mask problems until it is loaded or driven at speed, so a quick visual check is not enough. Look for rubbing during full steering travel, confirm the tires clear the body and suspension, and make sure the truck tracks properly once the new tires are installed.
How should 235/85R16 tires on a collector 1986 Chevrolet Trucks K20 Suburban be maintained?
Collector vehicles still need regular tire attention even if they are not driven often. On a 1986 Chevrolet Trucks K20 Suburban, 235/85R16 tires should be checked for air loss, uneven wear, sidewall cracking, cuts, bulges, and any signs that storage conditions have accelerated aging.
Pressure maintenance is especially important on a heavier vehicle because underinflation can affect both appearance and road behavior. Moving the truck periodically, storing it away from prolonged heat and sunlight, and giving the tires a close inspection before longer drives all help protect a low-use Suburban.
