lowered & stiff - tyre wear

[GTT 280]

Can anybody explain to me why people say that tyre wear is more noticable with lowered and stiffened suspension?

Is it to do with the abruptness of the shock and increased force behind the wheel and tyre?

And is it to do with the increased camber angle and side wear?

[Sands]

lower / stiffer suspensions allow higher corner speeds, which loads up the tires more and wears them out faster. Camber control should be better since the suspension will deflect less, but you'll also need to run slightly more negative camber due to the higher corner loads and more tire deflection. If you don't, the outside edges of the tires will wear faster then the inside, provided you don't drive like my grandmother.

The rear end should add more negative camber when lowered, the front will gain positive camber when lowered. You'll need to find some more adjustment in the front or you won't have enough negative camber even though you may still be within spec. There should be adjustment in the rear to correct the too much negative camber, if not, you'll need to get a set of adjustable links.

BTW:
Negative Camber = tops of tires lean in
Positive Camber = tops of tires lean out