i have the same wheel. i had a miner problem like this so i re-installed lfs and that seemed to fix it for some reason. When i first got my one i had to invert the throttle/brake axis in lfs and its all fine now.
play around with the settings and im sure you'll work it out
but you gotta remember, its not entirely the utes in the Brutes series that makes it all crazy, its also the drivers .
if you ask me, having a ute in lfs wouldnt be any different to car (except a bit of handling difference). As long as everybody still tries to race clean it shouldn't be to much of a problem.