I had a strange noise from the front when I bolted the SSR's on. f*ck me I checked the strut tower bolts, changed the pads, greased the caliper slides. It was still there. Driving me nuts. Turned out that that the hub rings which worm had made up for the bf were just, and I mean.04mm too ugh, stopping the wheels from bolting snugly to the hub. Machined them down and presto, noise gone. Something so simple.