samsniss350z

Has anyone encountered a clicking noise that appears to come from the parking brake. It makes more of a ticking noise at low speeds and disappears when travelling above 50mph. It also disappears when applying slight pressure to the brake peddle and also when raising the parking brake lever. The trouble is coming from the rear n/s brake as when i drive around right hand bends it totally disppears yet on left handers it gets louder. Its not a wheel bearing and time is tight with work at present hence my request as i'm certain other owners must have encounteted this. The 350z is a 2004 coupe with 82k on the clock, all brakes are Brembos with plenty of pad wear & no stones caught in the rotor. Thanks in advance.