Originally Posted by DANJEEPO8
"The combination of a lugcentric spacer with a lugcentric wheel is more prone to problems and not as strong when combined together."
This makes no sense to me at all. Please provide proof.
I'm curious what you have...
In the next couple days I will do a search thread on jk-forum, jkowners, jeepsunlimited, and here about wobble issues when using non-hubcentric spacers. I'll post up the links here for the "proof."
For the logical explanation: hub centric spacers are precision designed to place the weight and leverage on the hub. The spacers are centered on the hub. The studs and lugnuts do not center the spacer. The leveraged force from on and offroad driving is on the hub instead of the lug studs.
Lug studs stretch and flex. Not enough to see visually, but enough that when new studs are installed, they need to be periodically re-torqued.
Lug centric spacers place all the weight and leverage on the studs. Since they are not precision designed to fit the hub, they are centered on the lugs. Sometimes due to different tolerances or improper torque specs or patterns, users do not get their spacers exactly centered on the hub. This can lead to some wobbles--whether is it a lug centric wheel or spacer.
Sometimes people who run lug centric wheels have wobble problems that go away when they rotate their wheels--even without re-balancing them. This is typically due to an improperly centered lug centric wheel. This is more common when people do not use a star pattern to torque their lugs--or if they torque the first lug to spec with the others loose instead of doing the star pattern incrementally to get to the final torque specs.
When you add the variable of a lug centric wheel spacer to a lug centric wheel, you may encounter multiple issues.
First, you have multiple points of leverage--on the spacer studs and the hub or axle shaft studs.
If there is variation in the actual torque spec or seating of lugnuts on a hub centric spacer, their is uneven leverage on the studs. If the variation occurs on a hub centric spacer, the leverage is still almost exclusively on the hub.
Second, if the star pattern method of incrementally torquing the spacers and the wheels to specs is not used, there is an increased likelihood of variation that leads to wobbles. (Most of the anecdotal evidence you will see in the thread searches I will post are wobble issues with lug centric spacers--not outright failures.)
It is possible to successfully use hub centric spacers without wobbles or problems--assuming the quality of the aluminum and precision dimension specs would be equal to the Spidertrax, which may or may not be true.
You would use an incremental star pattern of torque specs for each the spacer and the wheel to help ensure the spacer and the wheel are as centered as much as possible. Still, they will never be as strong as a hub centric design because all the leverage is on the studs instead of the hub bearing a significant portion.
If you are at all familiar with performance cars (GTO, Corvette, etc.). Those guys either buy hub centric wheels or adapters to run with lugcentric wheels. Otherwise, they significantly increase the likelihood of wobble issues. The wobbles are more pronounced with lower profile tires and higher speeds on those types of vehicles, but the principle is the same.
In the end, I go back to my initial assertion. If you are going to spend $20k-$40k+ on a JK (depending on total mods), why wouldn't you spend an extra $100 for higher quality? That just makes no sense to me.
If you can't afford an extra $100 for higher quality, you are driving a vehicle you probably can't afford in the first place.