I think I went into my Garage and under the Timeslip tab added it there. You might have to host a pic of the timeslip off site some where
You must first post your car with a detailed write-up and pictures in the Garage section of this site. After that, you can then complete the time slip, tire and wheel portions of the Garage posting. I hope you take the time to complete a posting in the Garage. Once posted, your car's write-up and pictures will never be relegated to the archives.