What size tires are on a 87 F350?
There isn’t a single tire size that fits every 1987 Ford F-350; the size depends on the factory wheel option and drivetrain. In general, 1987 F-350s used either 16.5-inch wheels with tall sidewall tires or, in some configurations, 16-inch wheels with lighter-duty sizes. Common original equipment included 7.50-16.5, 8.25-16.5, or 9.50-16.5 on 16.5-inch wheels, while some 16-inch configurations used LT235/85R16 or LT245/75R16.
This article explains how to determine the exact size for a specific truck, why the size varies, and how to verify or replace tires safely. It also covers how to read sidewall markings and where to find the original tire information.
Historical context and factory options
The 1987 Ford F-350 line offered a range of heavy-duty configurations, with wheel and tire choices evolving over the model year and depending on cab/bed configuration, axle setup, and whether the truck wore factory steel or upgraded wheels. This era bridged the use of 16.5-inch wheels for many 1-ton and heavy-duty trucks with the later introduction of 16-inch wheel options on some trims and after-market upgrades.
Common stock tire sizes by wheel type
Below are sizes that were commonly seen as original equipment on 1987 F-350 models, depending on whether the truck used 16.5-inch wheels or 16-inch wheels. Use this as a reference guide rather than a definitive listing for a specific vehicle.
- On 16.5-inch wheels: 7.50-16.5, 8.25-16.5, and 9.50-16.5 were typical tire sizes for several heavy-duty configurations.
- On 16-inch wheels: LT235/85R16 or LT245/75R16 appeared on some trims or optional equipment, especially as wheel offerings diversified toward the late 1980s.
Conclusion: The exact tire size for a specific 1987 F-350 depends on factory wheel size and configuration. To confirm, check the door placard, the tire sidewall, or the vehicle’s VIN/build sheet for the original equipment data. If wheels have been changed, verify compatibility with load rating and overall diameter.
How to determine your exact tire size
Use these steps to identify the correct size on your specific vehicle, whether you’re restoring an original look or replacing worn tires.
- Inspect the tire sidewall for the size marking (for example, 7.50-16.5 or LT235/85R16). This is the most direct indicator of the tire size currently installed.
- Check the driver’s door jamb placard or a sticker under the hood for the original tire size and recommended cold inflation pressure.
- If you have access to the vehicle’s VIN and build sheet, consult Ford’s documentation or a trusted parts/dealership resource to confirm the original equipment.
Conclusion: Reading the sidewall markings and the placard will tell you the exact size for that particular F-350. If the truck has aftermarket wheels, the tires may differ, but you should match the load rating and ensure overall diameter remains close to stock for proper handling, gearing, and ABS (if equipped) behavior.
Important considerations for replacement tires
When replacing tires on a vintage heavy-duty pickup, consider more than just diameter. The load rating, speed rating, and the overall tire height affect handling, gearing, and safety. Here are key points to consider when choosing replacements for a 1987 F-350.
- Try to preserve the original overall diameter to avoid speedometer error and gearing changes; if changing wheel size, consult a tire specialist to select an equivalent diameter.
- Verify load rating matches or exceeds the axle capacity and the vehicle’s maximum gross vehicle weight (GVW).
- Be mindful of clearance issues with fenders, springs, and steering components when selecting wider or taller tires, especially on 16.5-inch wheels.
Conclusion: Matching load ratings and overall diameter is crucial for safe operation and correct vehicle dynamics; when in doubt, reference Ford’s original specifications or consult a classic-truck tire expert to choose an appropriate equivalent.
Summary
For a 1987 Ford F-350, tire sizes varied by factory wheel option and configuration. Common original equipment sizes included 7.50-16.5, 8.25-16.5, and 9.50-16.5 on 16.5-inch wheels, with some 16-inch configurations using LT235/85R16 or LT245/75R16. To determine the exact size for a specific truck, check the door placard, inspect the tire sidewall, or review the VIN/build sheet data. When replacing tires, aim to preserve the original diameter and load rating or consult a professional to select a safe and appropriate equivalent.
