We bought our 2007 fiver in Feb. of 2008 and we replaced ALL tires about a year later.
I looked at dates on sidewalls and decided NO big trips before they are replaced as this fiver was sitting on the dealers lot 8 months before I got it.
So far no problems with our MAXXIS tires that we put on it.
Good luck with your new toy hauler and welcome to this great forum!
Jo
__________________
2007 Keystone 291RLS
2003 Ford F250, 4x4, SB, CC
7.3L diesel, Banks Exhaust Brake
ISSPRO pillar gauges
Pullrite 15K sliding hitch
2-Honda Eu2000i's in toolbox
2012 Polaris 400
2012 Polaris 330