Originally Posted by Duragrouch

Well first, I doubt anyone speaks on this in RMS average, my guess would be peak-to-peak tolerance.

My standard in radial is as close as I can get it, while maintaining decent evenness in tension. Same for lateral, but my critical standard is no brake rub with the pads adjusted close like I prefer. But I'm way within that. I don't use a dial indicator, but after a full true and spin, the rim seems frozen laterally. Challenge yourself, get it as close as you can. That's the advantage of truing it yourself. You have time.

Others have opined that I don't need to try for such heights:
"If spec wasn't good enough, spec wouldn't be spec."