I currently have a 15x10 6.5 bs on my mini tubbed coupe. My rear measures 53.5" flange to flange. My current wheels sit a tad inside the wheel well. I'm wanting to run a 12" wheel and curious if a 7.5 bs will work. On a 8" wheel the bs is 5.5, 10" is 6.5 so I'm assuming a 12" wheel would be a 7.5 bs. Please help me if you have any info. I don't wanna make the wrong wheel choice. I appreciate any help. Thank you.