P:87 standards are basically N scale RP-25. If one can lay N scale turnouts, especially with code 70 rail, P:87 wouldn't be any different.
In the other direction, if you need an odd-sized wheel in N scale, an HO 64-tread wheel works fine. Nickelplate759 did that with his ancient Arnold/Rapido FA, and several of us have followed his lead. Those things had oversized wheels, and an HO 26 inch works beautifully.