Recently I've had great experience with the two shops and thought it's worth mentioning and help my SoCal BMW folks out with them savings.
Picked up a pair of Conti extreme contact sport 02 tires (265/35/19, 285/35/19) from Compound R (Whittier) and they got that installed, balanced OTD brand new for $1380 cash WOW! Hit my man Ken up and say Jeff white m3 sent you. They are much cheaper than tirerack or local performance shops if you are local, and they have guarantee scratch free installation equipment/tools.
https://www.instagram.com/rcompoundusa/?hl=en
Also needed a light weight wheels and was looking at used ones first, but end up picked a brand new one up (Enkei Raijin 18") from Fitment Industry (WI) yesterday for $996 INSANE deal and free shipping.
https://www.fitmentindustries.com/?u...0aAhNdEALw_wcB
So yea check these two shops out and they are legit AF