Did you end up getting 15 on the roof? I was thinking of doing 35 but read another thread that 35 was really dark. So I am doing 70 windshield and 55 on the roof. I would still like the roof to let some light in. It would help if you let me know if you did go with 15% for the roof.
Did 35% completely back out your roof? I am getting my roof done on my R1S and trying to decide what shade to go with. Was thinking 30 but am thinking it till be too dark.