American Expedition Vehicles JK Rear Bumper/Tire Carrier - Manual (Page 9)

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D. INSTALL THE WHEEL MOUNT TO THE TIRE CARRIER
1. Install the wheel mount into the tire carrier.
2. Measure the distance from the wheel mounting surface in the wheel to the bulge in the tire sidewall
(not wheel backspacing). Subtract 0.25” (6mm) from this measurement to get a default setting.
3. There are two ½” fine thread bolts included, use the 3” long bolt for backspacing ranging from 5” to
6”. Use the 4” long bolt for backspacing ranging from 6” to 7”. Use Anti-Seize compound on the bolt.
While these bolts will accept 99% of the wheel and tire combinations used on JK’s, it might be neces-
sary to source a 1/2x20 bolt of a different length for some applications.
4. When doing the final tire install, be sure to tighten the ½-20 bolt so that the tubes of the TIRE CAR-
RIER are all contacting the tire and there is about ¼” of “squish” in the tire sidewall.
5. Temporarily install the M10 X 20 anti-vibration bolt into the Tire Carrier. Tighten it a bit to prevent the
½” bolt from sliding rearward when the tire is initially installed so that it cannot damage the tailgate.
Tighten this bolt fully after the tire is on for the first time and after the ½” bolt has been adjusted.
6. The wheel mount has studs pressed in for a 5 on 5” bolt pattern, if custom axles are used with a 5
on 5.5” bolt pattern, the studs will need to be pressed out and pressed into the holes provided.