1988 Chevrolet Trucks R20 Tires

The 1988 Chevrolet Trucks R20 uses one of two radial tire sizes: 215/85R16 or 235/85R16. The smaller 215/85R16 applies to 6400 and 7200 GVWR configurations, while the 235/85R16 size applies to 8600 GVWR configurations.

The important next step is confirming the truck's actual GVWR setup before choosing a tire. Trim names such as Cheyenne, Scottsdale, and Silverado appear across both size groupings, so the badge alone is not enough. Checking the existing wheel diameter, the truck's current tire placard information if present, and the overall wheel-and-suspension setup helps prevent choosing the wrong R20 fitment.

Both primary tire sizes for the 1988 Chevrolet Trucks R20 are built for a 16-inch rim. That applies whether the truck uses 215/85R16 in the lighter GVWR configurations or 235/85R16 in the 8600 GVWR version.

Rim diameter is only part of the fitment picture, especially on an older heavy-duty pickup. A truck can still have 16-inch wheels while using a wheel width or offset that differs from its original setup. Before replacing tires, it helps to confirm the actual wheel dimensions on the truck and make sure the chosen tire matches the wheel correctly and clears suspension and body components.

The 1988 Chevrolet Trucks R20 has more than one tire size because its fitment changes with GVWR configuration. Trucks rated at 6400 or 7200 GVWR use 215/85R16, while 8600 GVWR trucks use the larger 235/85R16 radial size.

That difference reflects the R20's role as a work-oriented platform offered in several weight ratings, not just different trim levels. A buyer should identify the truck's exact configuration first rather than assuming every R20 uses the same size. On a truck that has seen decades of service, wheel swaps, suspension changes, or mixed replacement parts can also make a physical inspection worthwhile before ordering tires.

Start by making sure the truck is an 8600 GVWR 1988 Chevrolet Trucks R20, since 235/85R16 belongs to that heavier-duty configuration. From there, compare radial construction, sidewall style, tread character, and wheel-width compatibility rather than looking at size alone.

A 235/85R16 product for this truck is available from BFGoodrich in the All Terrain TA KO2 series with raised white letters and a 6.0- to 7.5-inch rim-width range. That gives owners a useful benchmark for comparing wheel suitability and overall tire presentation. The final choice should still reflect how the truck is actually used, whether that means road driving, mixed-surface service, or a more original-looking restoration approach.

The available sidewall style shown for the 1988 Chevrolet Trucks R20 product range is RWL, or raised white letter, in 235/85R16. That style gives a more visible performance-and-truck look than a plain black sidewall treatment.

Sidewall choice affects the truck's appearance more than its basic fitment, but it still matters on a square-body Chevrolet where visual presentation is part of the appeal. Raised white letters can suit a road-going or lightly recreational truck especially well. Even so, the sidewall style should come after the more important checks: correct GVWR-based tire size, 16-inch wheel compatibility, and the kind of tread and service characteristics the truck needs.

BFGoodrich is represented in the available 1988 Chevrolet Trucks R20 product selection, specifically in 235/85R16. The tire series offered in that size is the All Terrain TA KO2, built as a radial truck tire.

Brand alone should not decide the purchase on an R20. The right size for the truck's GVWR, the wheel-width match, and the intended use matter first. Once those basics are covered, a buyer can compare the product's sidewall presentation, tread character, load specification, and overall suitability for a heavy-duty square-body pickup that may see anything from occasional cruising to regular utility use.

A period-style approach for a 1988 Chevrolet Trucks R20 starts with using the correct GVWR-based size: 215/85R16 for 6400 and 7200 GVWR trucks or 235/85R16 for 8600 GVWR trucks. Keeping the proper tall metric radial profile preserves the truck's heavy-duty late-1980s look better than jumping to an unrelated modern size.

After the size is settled, appearance comes down to sidewall treatment and tread character. A more aggressive truck tread and raised white letters can give the R20 a stronger period truck presence, while a simpler presentation may better suit a work-oriented restoration. For exact originality, vehicle-specific literature, surviving examples, and marque-focused research are worth checking before settling on a final tire style.

Correct tire fitment matters on a 1988 Chevrolet Trucks R20 restoration because the tire size affects both stance and function. Using the proper 215/85R16 or 235/85R16 size keeps the truck aligned with its GVWR-based configuration and maintains the right relationship between the tire, wheel opening, and 16-inch wheel.

Fitment also shapes how authentic the finished truck feels in use. A mismatched size can change the visual balance of a square-body Chevrolet and create unnecessary wheel or clearance issues. Even on a driver-grade restoration, it is worth confirming the truck's exact configuration and current wheels before mounting tires, especially if the truck has had decades of repairs, upgrades, or parts substitutions.

Yes, modifications can affect tire fitment on a 1988 Chevrolet Trucks R20 even when the tire size itself is correct. Aftermarket wheels, altered wheel offset, suspension changes, ride-height changes, or brake and axle swaps can all influence how a 215/85R16 or 235/85R16 tire sits and clears the truck.

That matters because the R20 uses two GVWR-based sizes on the same 16-inch rim diameter, and modified trucks do not always retain their original wheel specifications. A careful check of wheel width, turning clearance, rear clearance under load, and overall suspension condition can prevent rubbing or mismatch problems. Older trucks often carry a mix of replacement parts, so a physical inspection is worth doing before tire selection.

Before driving a 1988 Chevrolet Trucks R20 on new tires, inspect the wheels, valve stems, lug hardware, and the truck's basic steering and suspension condition. Tire pressure should be set appropriately, and the tires should be checked for proper seating and visible clearance around the fenders, springs, and steering components.

An older heavy-duty pickup can hide fitment issues that only become obvious once fresh tires are mounted. It helps to look for uneven ride height, worn bushings, loose front-end parts, or signs that the truck has different wheels than its original setup. A short, cautious road test can confirm that the tires track properly and that no rubbing, vibration, or air loss appears once the truck is moving.

Tires on an occasional-use 1988 Chevrolet Trucks R20 should be maintained with regular pressure checks, visual inspections, and attention to age-related condition. Even if tread wear is low, sidewall cracking, cuts, bulges, flat spotting, and slow air loss deserve attention on a truck that spends long periods parked.

Storage habits matter almost as much as mileage on a low-use square-body truck. Keeping the R20 away from prolonged sunlight, standing moisture, and ozone sources can help preserve tire condition, and moving the truck periodically can reduce long stationary load on one section of the casing. A pre-drive inspection is especially important before any longer trip, since collector trucks often age differently than daily drivers.