I started out with the inboard brake setup in my ERA. It's mainly street driven with occassional track use. During hard launches I would occassionally get some wheel hop that I never managed to completely eliminate. During one particular burnout, I experienced some wheel hop causing the driveline u-joint to break. I could have just replaced the u-joint (and the transmission yoke, driveline and safety loop) but I was fearful that it would just break again so I decided to upgrade to the ERA outboard break set up. Once I switched rearends, my wheel hop issue was completely eliminated (although most ERA owners never experience wheel hop in the first place). I like the looks of the new rearend a lot but from a performance and handling perspective, I can't tell the difference between the two (other than the wheel hop problem going away).
Advantages of the outboard brake rear end: 1) looks cooler, 2)easier to replace brake pads, 3) lighter, 4) can adust caster, camber and toe in, 5) bigger rear brakes, 6) easier to adjust parking brake tension, 7) little chance of wheel hop issues during hard launches.
Disadvantages of outboard brake rear end: 1) costs more and 2) can't run under car exhaust out the back.
Advantages of inboard brake rear end: 1) cheaper, 2) can rund under car exhause all the way out the back.
Disadvantages of inboard brake rear end: 1) heavier, 2) some owners have reported wheel hop issues, 3) smaller brakes, 4) brakes more prone to fading and related problems with heavy use.
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I don't believe there would be any appreciable difference between the two as it is the same Jag rear end - same shocks.
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This isn't true. The inboard brake set up uses four coil overs. The outboard brake set up uses only 2.