Ryan,
I've done the torsion bar/add a leaf lift on my '96 4WD 4DR Explorer and have 31x10.5 Yokohama Geolandar A/T's on it. I actually had the 31's on for 6 months before the lift with no problems, I just now have much better clearance and better appearance. From the recent 4'wheeling I've done since the lift, I know I could go with a 33x9.5 M/T but nothing much wider. (Too bad they don't make a 33x10.5, would be perfect!) I'm sure you could fit 32x11.5 on after the lift (looking at mine I know I could) but you might experience some rubbing at full wheel lock in front, and full compression in rear.
Jordan,
The torsion bar/add-a-leaf does stiffen the ride up a bit on the Explorer, but my truck handles better now than it ever did before. I have increased load carrying capacity in the rear now, and more ground clearance. The truck corners more level now, and my fiance says she doesn't really notice any difference when she's in it. (Women are the ultimate test of vehicle comfort) <G> I only wish I had done it 3 years ago when I first bought it. After replacing the old and worn shocks with a set of the new Edelbrock IAS shocks, I will probably be removing the swaybars, as I'll have that much more ride stiffness. Removing the swaybars will improve my wheel travel immensely. Hopefully it'll all be a win/win situation?
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Cheers,
Andrew B.
1996 Ford Explorer 4x4 (slightly modified)
BC, Canada