I'm working on my first 1/8 scale buggy and I can't figure out what to use to tighten the lugnuts. They're recessed enough that I can't get a regular sized socket in there. It appears that they're about 19mm. I tightened them as much as I could using the tools at hand but they almost immediately came loose under 4s power.
It's a Kyosho buggy that I bought from mwry. I'm assuming that all these 1/8 buggies probably use the same size lugnuts.
Mine are definitely 19mm. When they're off the buggy, they fit perfectly in a 19mm socket and are too big for a 17mm socket. I also measured the diameter at .75 in, which calculates to 19.05 mm.