These underneath spare tire brackets were meant for not so wide tires based on what I'm experiencing. So be it. My radial spare tire is an Endoro P205/70R15 that will work just fine and further mount securely after I chain it to the frame. You see, to get where I'm at now I used some longer length rod and double nuts. I will hold on to the tee rod that wasn't long enough. You see it next to the rod I used. More to come ...