Had mine & a friend's MINI done with
DiamonTint
They come to your residence or workplace to do the install & are based in Mission Viejo. Actually got this contact via MINI2 some months ago...
Very pleased w/ craftsmanship, service & price
Tint material they use is Johnsons Silhouette Series/Lifetime warranty.
Appointments are made with Mike Bianco, the owner at: 949-347-8468
*Got a group discount (dealer price) for doing more than one MINI at the same location.