Yeah, i've found a few errors in the Bentley, so I use the Haynes to verify information. Also, neither is 318ti specific, but both have a little information about ti's, so between the two you can usually find what you're looking for. Sometimes the Bentley explains things better, sometimes the Haynes does. Pelicanparts has an alright technical section too, but I think this forums knowledge base is the best source of information on the internet. Plus you have a dozen or so of us that on here regularly and eager to help with first hand knowledge
