I was just looking at pictures of Hydromike's RIM, which is the same as a Max IV, and I was wondering if any of you out there with these kind of machines have switches tires around. For example 21" to 22" or 26" tires. Wouldnt putting a taller tire change your gearing around. You will probably have less low end, and more top end speed by doing this. Has anyone noticed anything like this? Im going to do an experiment when I get my Hustler BIGFOOT going and throw some 21" or 22" tires on there and see what it does compared to my stock 26" ones. I dont think that RI changes the sprockets around in the different Max IV models. I was just curious about this, so if anyone has any info please post it up.