Fact.
If you just replaced one, that one will be spinning at a different speed then the rest. A couple of things can happen;
kill the tire,
kill the tranfercase that is going to keep things spinning at the same speeds,
tires can even peal right off the rim.
http://www.dsmtuners.com/forums/newb...izes-size.html
http://www.tirerack.com/tires/tirete....jsp?techid=18