Never less than 42, and sometimes more.
42 in the front, and sometimes as high as 45 in the rear if the bike is full loaded with my 'backpack' (wife) on there. But, otherwise 42/42.
I haven't checked the TPMS's on my 2010 C14, but the ones in my 2008 were off by as much as 2psi (high).
I've run lower pressures before, but I find the C14 just destroys tires if they're 40-39psi or lower.....then again, I might have been pushing them a little as well;).