Tire calculation question

[Slowpoke]

Just got my Grypon an hour ago. Started reading the manual, then got confused about the tire size. I read on these forums that there is a tire calculator in the Pegasus softward. Downloaded that and tried to figure out my tire size in mm. I have 35x12.5/18 tires. I used a converter which converted the tires to a 318/68-18. Punched those numbers in the calculator with a 5% squish and my tire size is 2726 mm. Is there anyone that can double check that for me before I enter that figure into the Gryphon. Just making sure before I screw things up. Mahalo.