Bumping this thread for the sake of having this info searchable for the next guy...
I installed 1.5 inch Bora's on a 2018 Denali with the stock 22's with no problem whatsoever. As mentioned in a number of threads, 1.5 inch will result in the stock studs protruding beyond the spacer, but there was plenty of space in the indentions behind the stock wheels to accept them. No stud trimming needed. The 1.75 inch spacers would hide the studs flush.
No tire rubbing at full lock, but I do have a 1.5 inch front level kit from Suspension Maxx.
I installed 1.5 inch Bora's on a 2018 Denali with the stock 22's with no problem whatsoever. As mentioned in a number of threads, 1.5 inch will result in the stock studs protruding beyond the spacer, but there was plenty of space in the indentions behind the stock wheels to accept them. No stud trimming needed. The 1.75 inch spacers would hide the studs flush.
No tire rubbing at full lock, but I do have a 1.5 inch front level kit from Suspension Maxx.