rear wheels rubbing

[Dec_blue_vtr]

hi wondering if any one could help. ive had my car lowered, but some times when i go over a bump in the road the rear wheels rub in the arch where theres a bit that sticks out i think the bit of plastice that sticks out covers a bracket for the arch and bumper, any1 had the same problem and how did you resolve it thanks.

[wardesaxoboy]

it happens on most lowered saxo's when you corner? if im correct. or you have had it lowered by a noob who has fucked your rear axle?