If it's that year and came with the 22s then it should have CCD which should smooth the ride quite a bit.
Swap to 285/45r22 Defenders, they will improve the ride (I had the exact same Expedition and did this before trading on a '22). Could also spring for a rear and front sway bar to plant the ride a little and take out the notorious sway type bumpy/floaty ride they have.
I agree with poster above, don't pull the 22s for 18s, you will be less impressed with the look and won't notice a big improvement in the ride.
Wheels make or brake the look of a vehicle.
Swap to 285/45r22 Defenders, they will improve the ride (I had the exact same Expedition and did this before trading on a '22). Could also spring for a rear and front sway bar to plant the ride a little and take out the notorious sway type bumpy/floaty ride they have.
I agree with poster above, don't pull the 22s for 18s, you will be less impressed with the look and won't notice a big improvement in the ride.
Wheels make or brake the look of a vehicle.