1999 Ford Expedition Wheel Interchange

1999 Ford Expedition Wheel Fitment Guide

Known OEM Fitment For 1999 Ford Expedition

Factory equipment varied by trim and package. The values below are confirmed for the 1999 Expedition, but some items may differ on your specific vehicle. Always verify against the door-jamb tire and loading sticker and the owner’s manual.

Notes:

• Some 1999 Expeditions were equipped with 16 inch wheel and tire packages, while others had 17 inch wheels. If your truck’s placard or build sheet differs from the figures above, follow the calculator steps below to validate changes.
• Offset and backspacing are two ways to describe the same lateral position. Minor differences can appear due to how wheel width is measured at the bead versus overall lip. Use a single system consistently when comparing.

How To Use The Wheel Interchange Calculator

The on-page calculator lets you compare a donor wheel and tire to your Expedition, and it also supports custom sizes. Changing rim diameter will automatically update the tire diameter shown in the comparison so you can see overall effects.

• Step 1: In Wheels from (donor vehicle), enter the donor wheel specs. If the exact vehicle is unknown, switch to Custom wheel size and enter rim diameter, width, and offset. Add the donor tire size if you know it.
• Step 2: In Installed on (your vehicle), select 1999 Ford Expedition. If your trim used a different stock size than listed above, type in the exact values from your door-jamb placard.
• Step 3: Review Inner clearance change. Positive values mean more room to the suspension and brakes. Negative values mean the wheel or tire moves closer to components.
• Step 4: Review Outer poke change. Positive values push the wheel outward toward the fender. Ensure it does not contact the fender or liner at full lock or full compression.
• Step 5: Check Overall diameter difference. Keep total tire diameter within about plus or minus 3 percent of stock to preserve speedometer accuracy and gearing feel.
• Step 6: If needed, use Custom tire size to tune section width and aspect ratio until the overall diameter and clearances look safe.

Fitment Checklist Before You Buy

• Bolt pattern: Must be 5x135.
• Center bore: Wheel center bore must be at least 87.1 mm. Use hub-centric rings only if the new wheel bore is larger than 87.1 mm. Never force a smaller bore onto the hub.
• Offset and backspacing: Use the calculator to confirm both inner clearance and outer poke. Watch caliper barrel clearance on the inside and fender clearance on the outside.
• Wheel width: Wider wheels push both inward and outward depending on offset. Verify suspension, sway bar link, and liner clearance through full steering and suspension travel.
• Tire diameter: Target within about plus or minus 3 percent of your stock overall diameter for speedometer and ABS behavior.
• Load rating: Wheel and tire load ratings must meet or exceed your Expedition’s GAWR and GVWR requirements found on the door-jamb label.
• Lug nuts: Thread size is M12 x 1.75. Verify the correct seat style for your wheels and ensure adequate thread engagement.
• Brakes: If changing rim diameter, confirm barrel clearance over calipers and that wheel design clears any brake upgrades.
• TPMS: If your vehicle is equipped with sensors or has been retrofitted, ensure the new wheels or valve stems are compatible.
• Spare: Consider whether the spare will still fit and if it is safe to use with the new rolling diameter.

Plus Sizing And Common Upgrades

Many owners move between 16 inch and 17 inch wheel packages on this generation Expedition. The safe approach is to maintain approximately the same overall tire diameter while adjusting aspect ratio to match the new rim diameter. Use the calculator’s Custom tire size to match overall diameter and check inner and outer clearances.

• Baseline diameter: 255/70R16 is about 30.0 inches overall. Use this as a reference if your placard matches.
• When increasing rim diameter: Reduce tire aspect ratio to keep total diameter near stock. The calculator updates tire diameter as you change rim size to help you visualize the change.
• When increasing wheel width: Re-check inner clearance first. If the inner edge comes too close to struts or control arms, a higher positive offset may help move the wheel outward, but do not create fender interference.
• Steering and suspension: After any significant change, perform an alignment to protect tires and handling.

Installation Tips

• Prepare: Park on level ground, chock wheels, and use a properly rated jack and stands.
• Clean hubs: Remove rust and debris from the hub face with a wire brush so the wheel seats flat. A very light film of anti-seize on the hub face can help prevent future sticking. Keep it off the studs and nut seats.
• Test-fit: Spin the wheel by hand before mounting the tire to confirm caliper and suspension clearance.
• Mounting: Hand-start all lug nuts to avoid cross-threading. Use a star pattern to snug.
• Torque: Final tighten with a calibrated torque wrench to the factory specification for your exact trim and wheel type. If you do not have the spec, check the owner’s manual or OEM service data.
• Re-torque: Check torque again after 50 to 100 miles. Inspect for any rubbing at full steering lock and over bumps.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench
• Impact socket set, 1/2 inch drive
• Breaker bar for stubborn lug nuts
• Digital tire pressure gauge

FAQs

• What is the bolt pattern on a 1999 Ford Expedition?

  The bolt pattern is 5x135.

• What is the center bore size?

  87.1 mm. If your aftermarket wheel has a larger bore, use appropriate hub-centric rings. Do not use wheels with a smaller bore than the hub.

• What lug nut thread size do I need?

  M12 x 1.75. Verify the lug nut seat style required by your wheels and ensure proper thread engagement.

• My stock tires are 255/70R16. Can I switch to a different wheel diameter?

  Yes, if you keep the overall tire diameter close to stock and maintain safe clearances. Use the calculator’s Custom wheel size and Custom tire size to match overall diameter within about plus or minus 3 percent and confirm inner and outer clearances.

• What offset should I use with aftermarket wheels?

  Offset requirements vary with wheel width and brake package. Start by entering your current setup in the calculator, then adjust offset while watching inner clearance and outer poke. Aim to avoid contact with suspension on the inside and the fender on the outside.

• Do I need spacers?

  Only if required to achieve safe inner clearance. If used, select hub-centric spacers that match the 87.1 mm hub, ensure proper lug nut engagement with longer studs or appropriate hardware, and re-torque carefully. Spacers can introduce additional stress and should be used with caution.

• What is the correct wheel torque?

  Torque can vary by trim and wheel type. Refer to your owner’s manual, service information, or the wheel manufacturer’s guidance. Use a calibrated torque wrench and re-check after 50 to 100 miles.

• Why do offset and backspacing numbers sometimes disagree?

  Backspacing is often measured from the mounting pad to the wheel lip, while offset is calculated from the mounting pad to the wheel centerline using bead seat width. Differences in measurement reference can create small discrepancies. Use one method consistently when comparing.