digital display

[Conrad]

Not to shoot holes in your post Conrad, but doesn't the Tire Pressure Sensor also factor in Temperature?  I believe it does on the 08's and newer.  That way, there is less fluctuation in the pressure displayed.  Example, you may have 42 lbs. on the button at say 65 degrees F.  You head down the road and warm up the tires, the display may only read 43 or 44 lbs of pressure when actually the pressure is significantly higher.

The TPMS does compensate for temp.  When you first start riding, note the pressures.  After a few miles, they will come up a psi or 2 - this is the stabilized pressure, ie the tires are pretty much warmed up.

The pressures shown on the TPMS will not normally vary more than a single psi after that point.

If you have 42 psi at 65f per a gauge, the TPMS will normally show 40 or 41 at startup, and stabilize at 42 when warmed up.

Right, I know when the display goes up ~2psi that my tires are warmed up enough for me not to have to worry about taking my fav two or three curves (that's all I have on the way in to work) at speed.

[koval68]

I keep mine on on tire pressure.

[Son of Pappy]

Current MPG, helps me control my happy grip.  With SWMBO on back I use the tire pressure screen.

[Tom J.]

I keep mine on 'Current' mileage and I don't know why.  Maybe I just like seeing that I'm getting 44 miles per gallon!
I agree though, that tire pressure is probably the safest setting as you might get some early indication of a tire picking up a nail or something.