A search for images on Google finds some images of vehicles that appear to be moving with similar
extreme camber.
Magnesium wheels wrapped with super-sticky 13in Avon ZZR rubber give the 620R the look and stance of a race car, as does
the extreme camber angle of the front wheels.
This extreme camber makes the contact patch very small and near the inside edge of the tire.
Driving with
extreme camber angle on rough roads will put undue stress on the suspension components, which may have caused your toe angle (controlled by tie rods) to be effected as well.
Not exact matches
The combination of that much
camber plus that much toe will cause it to wear more quickly, but there's not much you can do about it without getting
extreme in swapping parts.
Import Tuner Magazine noted a common problem with lowered cars,
extreme negative
camber that can lead to irregular tread wear and shorter tread life.
However, the rear swing axle, jointed only at the differential, not at the wheels themselves, could be treacherous at high speeds or on imperfect roads due to
extreme changes in
camber.
Coilover suspension with dramatic default negative
camber settings ensure the semi-slick tyres can maintain grip in
extreme cornering conditions.