I have had my spidertrax spacers for about 8 months now with wheeling harder than before the install. No problems at all. I have rotated my tires twice and checked all the nuts; they were all perfectly tight.
These are the main things to keep in mind:
1) Use RED loctite
2) Torque to 110 ft lbs
3) Be sure that the spacers fit perfectly flush on the hub
3) Rotate tires every 2-3k and be sure to check the torque on all spacer nuts
4) If a nut moves when checking, you have to pull it off and re-loctite it, since the loctite seal has obviously broken.
I did a bunch of research on spacers and found that it is something that I didn't want to take any chances on, so I went with Spidertrax spacers, which I have NEVER heard a complaint about.
I have heard that jeep axles are not Hub-centric, which would mean that you don't need hub centric spacers. However, I figure why not just get the hub centric spacers and don't worry about the issue? It might cost a few bucks, but I think it is worth not having to worry.
I bought mine used on ebay for $125 for all four. They were in great shape. If you keep your eye out, you can sometimes get pretty good deals!
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33" Goodyear Wrangler MT/Rs, Spidertrax 1.25" Wheel Spacers
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