If you have not purchased your tire carrier yet just a little info for you, I'm with Hummer of Marietta we only use the SMA carrier they have taken care of the rattle issue. It mounts into the same holes as your d rings (so no new holes to br drilled) they have made a rubber insert on the coupling your swing arm goes into so as to latch it. No rattle, simple adjustment perfect tire carrier.
We also are a custom hummer dealer if you guys need any help (buying an h2 or just need direction on some assessories let me know
jmc247@bellsouth.net