Thanks fellas, I don't have the exact toe settings, but I did give the alignment shop (over 2 years ago now, but this has been a problem since then) the factory toe specs and they assured me they set them that way. It's been in the back of my mind to do my own check anyway, so now that will be priority #1.
To answer some of the questions:
1. It's wearing both the inside AND the outside of the tyre. Yep both. Reason is if I turn left the left hand tire tilts negative camber wearing the outside of the tire, the right hand tyre tilts positive camber wearing the inside. When I turn right the opposite happens wearing the opposite side of the tyre on each side.
I'm yet to do some testing, but all I can put it down to is geometry. essentially when the steering is turned it causes the tyre to lean "into" the corner. I'm a bit stumped as to how this can happen given the UCA and LCA are fixed lengths and can't move inwards out outwards to cause the spindle to shift it's vertical plane
2. Cupping. Nope it's not cupping. wear is quite smooth
3. Under inflation and crappy tyres. They are Continentals which I thought were decent, but I'm surprised by the wear, having said that I have the same continentals on the rear and they are in awesome shape after 2 years, barely any wear at all, so I do think the camber is the issue. Under inflation becomes more a problem towards the end of their life, as they get close to the canvas on the edges of the tyre I find I'm having to add air a lot more regularly, so it becomes a vicious cycle then
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68 Camaro 632 BBC 800+ HP Project (600Kw)
61 Buick Lesabre Bubbletop (daily driver)......miles of smiles
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