I ride a motorcycle...
Just installing HID = poor aiming and terrible light diffusion for motorcyclist's safety.
Do a full retrofit with the proper projectors. And SilverStars have a 1yr warranty...
I tested my setup with a coworker that drives a frickin Miata and he didn't complain at all. So proper aiming is key.
I got blinded by a f-250 with what appeared to be a 50watt system the other night and I know exactly where you are coming from.