[Mike C]

A lot of the roll will be from the 15” tires. Even in the 28” range they have a lot of sidewall. What size tires are you running?

A set of 17” rims and 265 70 17 would be equivalent to a 32” 10.5” tire on a 15” rim. With two full inches less of sidewall.

If you have a tire in the 30” range, a 245 70 17 would be 30” 9.5” 15 equivalent or close to it making for even less sidewall roll.

I also would recommend a set of Bilstein shocks for your truck.