I think someone sold you a line with the 170. I have only rode on the sidewall once and that was a ony because of the way the curve was slopped. I can't imagine what it would have done with a 170 on it.
No real tricks, however you may want to grease your driveshaft splines and the fingers on your real wheel up hub. Just put everything back the same way you took it off.
I have done lots of these including my bike and I like it. If you are going to maintenance day I would be glad to help you change them out if you get the parts.