1995 BMW 323 clunck when i brack

i have recently noticed that when i brack going foward that i get a cluck every time i apply the bracks The cluck is coming is coming from the front non drivers side I have had the abs system checked and that is ok It does not do it in the wet I have also changed the caliper and everything is tight hte caliper is from a 3 series but not off a 323i