The shop that mounted my wheels told me 90, my son said too much, use 80. So I agree with bluecoupe, 80 it is! Mike Testors silver model paint also works for wheel boo boo's. Those little square bottles. I haven't noticed it yellowing. Its nice and thick and tends to hide small curb rash. Let me know if I can send you that address or if you find some one local.
Pat