The legal limit in CA is 35%. However all you need is a certificate that says 35%. We have 50% on our vette and a certificate that says 35%. Luckily have never been pulled over but if so we have "proof" that we are ok.
The tinting guys said that if we do get a ticket for $175 they would re-tint the windows to 35%, or for $200 they could get someone to sign off the ticket for us. I thought it was kinda funny!
