What size tires are on a 1999 Ford Super Duty?
There isn’t a single tire size for all 1999 Ford Super Duty trucks. Most SRW F-250 and F-350 models from that year rode on 16-inch wheels with heavy-duty LT tires, commonly in the LT235/85R16 family, but sizes varied by trim, cab/bed configuration, and whether the truck used a single rear wheel (SRW) or dual rear wheels (DRW). The exact size for your truck can be found on the door placard or in the owner's documentation.
Common factory sizes you’ll encounter include:
- LT235/85R16 on SRW trucks (typical for F-250/F-350 with 16-inch wheels) with an E-load rating.
- LT245/75R16 used on some trims or optional wheel packages, also commonly on SRW configurations.
- LT265/75R16 used on certain DRW configurations or premium packages with 16-inch wheels.
Remember: 1999 Super Duty configurations varied widely by trim level, wheel choice, and whether the truck was SRW or DRW. The door jamb placard and the owner's manual will confirm the exact factory size for your particular vehicle.
How to verify the exact tire size on your 1999 Super Duty
To confirm your specific tire size, use these steps. The following instructions help you identify the correct size on your vehicle, not just what might be common for the model year.
- Check the driver's door jamb placard for the recommended tire size, load rating, and inflation pressures.
- Inspect the sidewall of the current tires for the size string, typically printed as LT235/85R16, LT245/75R16, etc.
- If you replaced tires or wheels, review the dealership invoice, build sheet, or window sticker for the exact size that was installed from the factory or by the previous owner.
- If you still can’t locate it, contact a Ford dealer or service center with your VIN; they can pull the exact original equipment (OE) specs.
Verifying the exact size ensures proper fitment, safety, and load handling, especially for heavy-duty use typical of Super Duty trucks.
Additional considerations when selecting tires
Beyond size, prioritize load rating (E-rated tires are common for heavy-duty work), appropriate speed rating, and the tire type for your intended use (all-terrain, mud-terrain, or highway). If your truck is DRW, keep in mind dual-wheel configurations require matching sizes and sometimes different rear tire specifications. When replacing tires, aim for a set that maintains the factory overall diameter to avoid ABS/traction control or speedometer discrepancies.
Summary
In short, a 1999 Ford Super Duty did not have a single tire size. Most SRW trucks used LT235/85R16 tires on 16-inch wheels, with variations such as LT245/75R16 and LT265/75R16 depending on trim and dual-wheel configurations. Always verify the exact size on the door placard or via Ford’s service resources using your VIN. Matching the original equipment helps preserve ride, handling, and gearing for towing and daily use.
What size tire for F250 Super Duty?
The tire size for a Ford F-250 Super Duty depends on the model year and trim, but common factory sizes include LT245/75R17, LT265/70R17, LT275/65R18, LT275/70R18, LT275/65R20, and 285/75R18. For example, the XL 2WD typically uses LT245/75R17, while a Platinum with the Tremor package might use 285/75R18.
Common F-250 Super Duty tire sizes by year and trim
- XL 2-wheel drive: LT245/75R17
- XL 4-wheel drive: LT275/65R18 or LT245/75R17 (depending on package)
- XLT 4-wheel drive: LT275/65R20 or LT275/70R18
- King Ranch: 275/65R20 or 285/75R18 (depending on package)
- Platinum: 275/65R20 or 285/75R18 (depending on package)
- Tremor Off-Road Package: 285/75R18
Other sizes
- Older models may have used sizes like LT265/70R17, LT275/65R18, and LT275/70R18.
- Some models can also come with larger options like LT285/70R17 or LT275/65R20.
What size wheels are on a 1999 Ford F350?
Ford F-350 I (PHN131) Super Duty [1999–2007]
Matching tire sizes like 235/85R16 and 265/75R16, the OEM wheel diameters span 16 inches to 18 inches. The Bolt pattern is 8x170mm, which is constant among the Super Duty variants. With measurements of 124.9 mm, the hub bore guarantees a centered, safe fit.
How much is a 99 F250 7.3 diesel worth today?
A 1999 Ford F-250 with the 7.3L diesel engine is worth between approximately $3,000 and $30,000+, depending on the condition, mileage, and specific configuration. While lower-mileage, well-maintained models can sell for over $25,000, many examples with high mileage are worth closer to the lower end of the range.
Factors influencing the price
- Mileage: High-mileage trucks are worth significantly less than those with lower mileage.
- Condition: The overall condition, including mechanical and cosmetic, is crucial. A truck in excellent shape will command a much higher price than one in rough shape.
- Trim level and options: Lariat trims and crew cab configurations are typically more valuable than XL base models.
- Modifications: Aftermarket parts like lift kits, tuners, and exhaust systems can increase the value, but some modifications may be less desirable for certain buyers.
- Maintenance and history: A documented maintenance history is a big plus, while a truck with a known history of problems or neglect will be worth less.
Where to find a price estimate
- Kelley Blue Book (KBB): Offers a range of prices based on condition, trade-in value, and dealer retail. Use KBB's 1999 F-250 valuation tool for more specific estimates.
- Edmunds: Provides a similar appraisal value based on vehicle condition. Edmunds' 1999 F-250 valuation tool is a good resource.
- Online marketplaces: Websites like TrueCar, Cars.com, and Facebook Marketplace offer real-time listings of comparable vehicles, which can give you a good idea of the current market value.
What size tires are on a 1999 Ford F250 Super Duty?
The standard tire size for a 1999 Ford F-250 Super Duty is LT235/85R16, available in various trims like the XLT, XL, and Lariat. Some models may also have the larger LT245/75R17 option, depending on the trim.
Standard tire size
- LT235/85R16: This is the original equipment (OE) size for most 1999 F-250 Super Duty models.
Alternative tire size
- LT245/75R17: Some Super Duty models came equipped with this size, which is larger and requires 17-inch wheels.
Where to find your specific tire size
- The most accurate way to confirm the correct tire size for your vehicle is to check the tire placard, which is usually located on the driver's side door jamb.
- You can also find the size printed on the sidewall of your current tires.
