I had HEL on, the 1st set were actually too long (I didn't knew about it until i fitter my 2nd set as the 1st set started to touch the wheel and wearing in). I had no issue for the 1st year until i start hearing noise. After investigating, i found the hose is touching my wheel. Not sure why the issue only started after 1 year. Reported to HEL and they were quick in sending a replacement hose. When my local garage fitted them, they said the old hose were longer compared to the new replacement (not sure which set is correct for a 350z, is the first set too long and they fixed it since? or the 2nd set were shorted but coincidence it fitter better?) Anyway, 2nd set is now only for over 6 months now and no sign of touching the wheel. From what others said, HEL's decision to remove the 'block' with a P-clip is the main reason they are not as good as OEM or others (Goodrich/Hosetechnik).