I have heard that you should absolutely not have toe out and that the toe in should be from zero to 3 degrees. Of course the more toe in, the more wear on your tires. My understanding is that the toe-in helps you maintain a straight run as when one wheel starts to turn from toe in, to straight, the other puts on more drag by toeing in more, helping pull the plane back to straight.
See N64KR at http://KRBuilder.org - Then click on the pics See you in Mt. Vernon - 2006 - KR Gathering There is a time for building and a time for FLYING and the time for building is OVER. Daniel R. Heath - Lexington, SC