I use the TSTs in the winter on my P85+. The stock P85+ wheels AND tires are staggered... so if you're replacing those with 4 19" TST rims and 19" tires, the P85+ staggered set up doesn't really come into play.
In fact I "un-staggered" my P85+ and put on 21"x8.5" rims in the rear with 245 tires so I could buy cheaper tires (Hankook) and I could rotate them front to back as well. No issues, of course.