I'd get it up at the front and see if I can replicate the sound by spinning each wheel by hand. Then, as demonstrated by Edd China: Hands at 6 and 12 o'clock on each wheel and yank to and fro. Hands at 3 and 9 o'clock on each wheel and yank to and fro. Steer to each extreme and back. Check for play at all joints possible, he uses a pry bar. Wheels off, checking nuts and studs on the way and inspect suspension, steering and brakes. Inspect wheels and tyres for damage and witness marks, including weights as above. Inspect discs.Jonathan