I was actually looking at getting the same exact tire for my Sport except on 15x8s with 5.25 backspacing. I still have to do some measuring but based on your's that should be perfect with the 8.8
The last picture I posted shows the rear just sitting under the car before doing any aligning.... The wheels that the tires are on in the pic are 15x10's with 3.75" BS and when we did the final centering and aligning of the rear, the tires sit just about 3/8" past the outside edge of the upper wheel well opening on both sides. Going with 15x10's with 5.5" BS will pull them in enough to tuck them under the wheel wells with minimal trimming and rolling of the lip. Hopefully....
