You do realize that the front 235/55/17 is only going to be 27" tall and not fill any gap up, it will create gap. Factory tires were 235/75/15's and were almost 29" tall.
This is factory 15x7 aluminum wheels with 235/75/15 tires on my truck, stock height

This is the 17x8.5 Impala SS wheels with 275/55/17's on the same truck, stock height:
