When i go round a hard corner my rear wheels seem to run on the inside, not the tires the actually rim of the alloy on the control arm or the camber adjustment part. it makes a horrible metal on metal noise.
sorry i think i got that right with the camber bit.

does this mean i have to go for a differnt offset so the wheels sits out of the arch a bit more.

they are only 15*7's with 195-55-R15 tires on my lowered EG6 its not agressively low at all the is about 5 mm from tires to arch so quite a lot of room really, but as said its on the inside at the back so its not an issue with the ride height.

i believe the offset on these wheels is +37

does this mean i should be looking at a lower offset to push them out of the arch ?