Originally Posted by Victory Pete

Success
[HR][/HR] I managed to get them to inflate. I pumped them both up a bit, 6.5", then released the air until they were 6.25". I will keep an eye on them. I used the wooden vise in my Sjobergs woodworkers bench to set the exact diameter and then just set them in to determine the exact size releasing just the right amount of air until they just fit in the vise. You need a separate detached filler valve to do this accurately. These tires have a nice cushion to them, they are much better than the stock 4" tires that came with my Miss Morava tow plane. I can see how it is important to keep an eye on the diameter of these tires as temperature and barometric pressure changes can possibly allow them to over inflate. A separate fill valve should be with you at the field to let out some pressure if they start to over expand from a hot day. I am quite pleased with these tires.