As the title my 340 seems to have far to much rear camber, the rear tyres wear on the inside edge alot quicker and looking at the rear of the car it looks like too much

i didnt think the camber could easily be changed on a 340 rear axle, could the axle be bent?

any help appreciated

cheers
chris

Is the axle box horizontal in the front to back direction?

Not sure ill have a look at the weekend

should the axle box be perfectley level i.e when on level ground it would read true to a spirit level?

cheers
chris

Yes, I don't think is hyper sensitive. A more accurate method might be to use wheel alignment equipment until you get zero toe.

As the axle rolls forward the negative camber turns into toe-in, from to 0-90 degrees, changes from 0-2deg (per side toe-in) so 22.5 degrees is -0.5degree toe, although axle might actually be bent of course. I don't know what angle the axle takes without the radius arm normally (lowering shouldn't matter), but the radius arm corrects this and keeps it the same as the suspension travels up/down.

The lowering process moves the radius arm further away from its normal location, really the mounting point for the arm on the body should be lowered aswell to keep the same geometry. Instead of paralell tracking up ad down the axle changes rotation as it moves up, creating worse geometry than the normal non-ideal suspension.