SO I plan to go with 27x9x12(front) 27x11x12(rear) mega mayhems, already have an HMF exhaust, HMF tuner, and K&N intake. My bike is a 2014 rancher IRS. Wasn’t sure if i wanted to do the SRA GR, or I would be ok with out it, and would it be worth it to do the SRA GR, and then do 28" mayhems instead, need some input before I drop $1000 on tires