Rear tire wear with good bushings?

[walktheboard]

For as long as I've had my e30 it has torn through rear tires in a matter of <10,000 miles. Only on the inside 2-3" of the tires, though. Visibly I have excessive negative camber. It is lowered on Eibach sport springs and bilstein sport shocks. I planned on replacing the rear subframe bushings and the RTABS to get rid of the camber or toe wear that's always happened. I've got the subframe completely out and can tell the subframe bushings are either shot or very close to it. I can tell they have never been replaced before and have 243,xxx miles on them. The RTABs on the other hand look to be fine? They are a little cracked but feel solid. Is there a good way to tell if they are bad or not(aside from tire wear)? Do I just need to go ahead and get the weld in camber/toe kit?

[THEhomelessONE]

I have 12mm riser condor kit, drive pretty hard on 180 treadwear rating tires. Think it's been about 5k miles and very even, minimal wear, about even to the fronts. If the subframe drops at all when you lift it, pretty clear sign they're shot. Pretty sure they need to be replaced regardless. I looked into camber/tow kits, but read they like to kick out of adjustment.

[nrubenstein]

With good bushings, the wear should be fine.
Replace the RTABs while you have the subframe out. It's only an extra few minutes of work.

If you are at a fairly normal height, get subframe riser bushings of some sort.

[walktheboard]

I ordered and installed the Condor riser subframe bushing kit with diff spacers. Also put in new meyle RTABs. I haven't tested it much yet but the wheels look closer to vertical.

Also put new boots on both axles and replaced tranny mounts(they were in half)...

[RedReplicant]

Replacing my 200k mile RTABs and subframe bushings took out a noticeable amount of rear camber and toe.

[LivingLegend06]

I have all new rear subframe and RTAB bushing as well as the weld in camber and toe adjusters. My rear tire wear is perfectly even all the way across and after over 10,000 miles I'm on pace to get about 30,000 out of a set of dunlop star specs (200 treadware I think).

I had concerns about them holding the alignment so I had the shop mark the locations of the bolts with a paint pen so that I could visually check to see if the adjusters had moved. Shortly after getting it aligned a couple of the bolts rotated a little but I just set them back into position and tightened them extra hard and have not had any issues since.

Claims of 10,000 miles out of a set of rear tires seem to be pretty common for lowered E30s, even with new RTABs and subframe bushings. At that rate of tire consumption the adjusters will pay for themselves in no time.