Wheel spoke torque settings

OK, so Ive never checked the spoke tightness on the rims.
There are torque spoke wrench sets available on Web sites (4ft/Ib - 5.42N/m) or just the plain standard wrench.
Cannot seem to find any definite torque settings for the GRiSO rims, anybody have any clues?
Or do I just use the tune by ear method and hope that Im not tone deaf!
The tyre pressures drop around 6psi front and 4psi rear over a stationary period of 6 weeks, which Im guessing is to be expected.
With just normal top ups for general riding.
Cheers.

I would think that the wheel being true would be more important than a torque setting.

Torque is approximately OK when the sound is the same as from the spokes next to the right and left. A friend of mine did it this way on his T3 when returning from a 3000 km tour with 4 spokes broken.

Guzzitech forum and here have a few threads that allude to spoke torques eg There is one Alpina trained service technician here in SoCal. Piaggio does not offer a service interval, as they only recommend wheel replacement should yours become damaged or otherwise. Spoke torque is 4~7 NM, 7 being max.

Somewhere here (I can't find but will post if I do)it is a thread where someone took a load of spokes off & re-'o-ringed them etc ....just need to dig deep to find

There's a thread on fixing spokes here [You must be registered and logged in to see this link.]

Which also points to this pdf [You must be registered and logged in to see this link.]

[quote="paulbrice"]There's a thread on fixing spokes here [You must be registered and logged in to see this link.]

Thanks for the info guys, will go with the "Ta-Ting" sound method for starters.