Definately get on some motorcycle accessory websites and see what kind of prices you can get. I used rockymountainatv and found tires with free shipping that cost me slightly more for the front and rear than just the rear would have cost if I had stuck with OEM tires.
Also make sure you don't mix radial and bias-ply, replace radials with radials.
Retired USAF, IYAAYAS!
2008 V-Star 1100 Custom Bobber project
2011 Crimson XR with Forged Highway Bars / Hard Bags / Passenger Backrest, Ness parts including Smooth Layback Plate Frame/Mount / Rad 3 Mirror / deep cut grips / drivers floorboards /shifter peg / brake peg / passenger pegs. Witchdoctor black rack, Lloydz filter / timing wheel / VFC III, 7Jurock windshield, Drag Specialties seat.