I am re-reading John's legendary "Toyota Prius User-Guide Eighth Edition, Eighth Revision for the ICONIC (2004-2009) model." And, I had forgotten how much good information that basic document has....but noticed he recommends re-torque of wheels (76 foot-pounds) after 100 miles. I googled this and found lots of disagreement....And, I searched this forum and found NO threads (that can't be, I am sure I missed it). What's the thought? It's been about 100 miles since I did my disasterous rotation on May 17.... Actually, not that big of deal...have the afternoon free, guess I will just go out and check.
I've never bothered to torque any of the nuts/lugs on any of my cars, but I do check them after 50-100 miles to make sure that they're still tight after having the wheels off. It's more so to check up on myself
I noticed that on a tire shop's bill one time, a caution that I should check (or get checked) the lug nut torques, in about 100 kilometers I think. I've never bothered with it though. My main concern is to make dang sure to torque them in the first place: I snug them when the car's off the ground, then gotta remember: torque them first thing, when the car's lowered.
On one of my previous cars, re-torquing became essential. Not just once, but several times after any tire exchange or rotation. This was discovered when a wheel came loose after a seasonal tire change. While all four where found with somewhat loose lug nuts, that one location always loosened more than the others.
I check mine to be assured that I can actually get the lugs off when I have to. Some times they have been tightened beyond that point by otherwise well meaning tire guys with air tools.
That makes very good sense. I don't bother to check the torque after 100 miles but then I have no concern about the lug nuts loosening. Since you have good reason to be concerned, then you should check the torque 3x: 2x when you are first installing the tire; then an additional time after 100 miles for good measure.