I put on some 20's tonight and go out for a drive and 10 minutes into driving warning light comes on.. so i pull over bust out the manual to find out its the low / flat tire warning..

I dont have a flat tire , so how do i get it to shut off?

Put your old tires and wheels back on!



just joking, it seems the OE had tpms and your new ones do not or were not installed correctly.
Talk to the shop that mounted the tires on the wheels and see what they say.
Also, did you go to a larger diameter tire back to front?
the way I understand it is that the vehicle measures each individual tire rotation speed and compares to each other, if one is rotating at a slower speed than the other 2 or 3 it will give you a low tire pressure warning.
Lots of variables

Before you do any of the above, reset the low pressure warning system. Read the manual and follow the directions. If the light comes on again, then check the mounting of the new tires.

http://www.vwnebraska.com/x3.jpg

Before you do any of the above, reset the low pressure warning system. Read the manual and follow the directions. If the light comes on again, then check the mounting of the new tires.
exactly