Just wondering how accurate other peoples trip computers are. When I had 18s on it would show 30 miles on the range and the tank would have noooo fuel at all. I know this, because I ran out on the motorway . But now I have put 17s on and I'm being very cautious around when it's getting low. Do other peoples run down to 0 before it needs fuelling up? I just don't want to be in the same situation again, where I get to 30 miles left and I need to call the orange van man because I've ran out!!