I was just wondering if there is a inside tire mount that uses the 3rd row seat mounting spot as its anchor? I have 315's and I need a spot to hold the spare, and yes its just laying in the back for now, but that really is a safety issue since my 3 year old rides in the cruiser............If anything ever happened I do not want the tire to fly up from the rear cargo area! I would like a rear bumper but I cant do it as of now that is why I am seeking a "cheap" alternative. Thanks for any advice and help on this issue. Chans