Humble Bundle was giving away GRID 2 for free: https://www.humblebundle.com/store/grid-2. Price was right and me, as a greedy bastard, of course leeched the ware.
GRID 2 is an arcade racer. It has some level of simulation, but mostly it is targeted for regular gamers. Still, driving a racing car with a typewriter doesn't really sound sensible to me and I whipped up my G29 wheel and started the game.
Crap!
Back in 2013 they didn't support my wheel. Turns out both Codemaster's forum ([Logitech G29] Can't use wheel with GRID2 & GRID Autosport) and Steam forum ([Guide] Add G29 and G920 support to Grid Autosport (Includes Clutch and shifter)) have lengty discussion about tinkering the wheel to work. However, given the age of the game, the XML-file referenced in discussion is long gone. The information is valid.
First: This is an obvious one. Make sure you have Logitech Gaming Software installed. Danger: The wheel seems to install correcly in Windows 10, but it won't. You really really need to have the Logitech stuff installed also. I got version 9.02 from https://support.logitech.com/en_us/product/g29-driving-force/downloads.
Second: The XML-file everybody is talking about is here: lg_g27.xml. Place it into steamapps\common\grid 2\input\ (suggest backing up the original file first!) and then selecting Direct Input Device from game controller options. This enables choosing of Preset<lg_g29> and further tailoring controller settings to your own liking.
Happy racing!