2015 Ford Expedition ride height and suspension upgrades.

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Iamsam1117

Iamsam1117

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After driving it about 60 miles it's evened out a bit. Sitting 15" in the front and 14.75 in the rear... Measurements come from the running boards since the wheel wells are different heights on these cars... Looking at going from 32" to 34" tires to take it up an extra inch 35" on R20 is outta my budget (200 or less per tire)
 

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I got around to pulling the fronts off again so I could drop it a few notches.
I erred on the side of caution and dropped it 3 notches which for F150 Springs is .79” the next notch up is 1.29” and if it lifted it 2” above that like it did before I would still be high and have to do it again. Granted it gets easier each time but is still time consuming and have other stuff I need to get done.
As luck would have it notch 2 is right at a 2” lift. We’ll see if it settles at all. The rig rides, and handles great. Actually even stops better as there is less nose dive.
The 275/70/18 (33.5x11) look good and no running what so ever.
DDDCF823-D281-4475-8F18-B18E24BFAE60.jpeg
Not quite as aggressive as the 3” front and 35s but I am quite happy.
I’ll be getting the RCI engine skid plate so I can loose the air dam for slightly better clearance.
 
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Iamsam1117

Iamsam1117

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Looking good!

Just out of curiosity I'm still in the process of my high front being fixed.... What is the measurements to the bottom of your side step on the front and back? Is it about an 1" difference??
 

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14” up front and about 15.5” in the rear.

Tomorrow I’ll try to get around to ForScan to adjust the speedometer.
 
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Iamsam1117

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Excellent, thanks much these cars don't exactly look good "leveled" they definitely look better raised a bit in the rear
 
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Iamsam1117

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IMG_20190426_121922.jpg

All done!! I still may bump up the rear by about 1/2" still undecided though.

Forscan edits for the speedo meter was a cakewalk!
 

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Looking good.
Hopefully I’ll get to my speedo here soon.

How did you choose a new tire pressure?
Shop I got my tires mounted at put them at 50 psi according to my OBDLink. No warning light, not sure if our rigs use a low trigger only or not.
 
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Iamsam1117

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My tire guy has been running his own shop for about 30 years... He checked and said to run mine about 35-40psi and when I tow bump up the rear to 50psi.

Basically said that running them at 50 (what I original was thinking also) would cause the tire to bubble a little in the middle causing undesired wear. But being different tires than yours it may be correct for you.

When I did my forscan changes the BCM setpoint was 35 psi for the tire. I'm guessing if it goes 5-10 psi below that will trigger a low tire alarm. Will drive over the weekend and see how it feels
 
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Iamsam1117

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Update from above... Per research your tire warning light will come on when a pressure below 8 psi is detected from the setpoint inside your BCM!
 

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Another member here mentioned covering the tread with chalk and drive to make sure all is making contact with the road.
 

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