I just bought a demo 07 Scag Turg Tiger today that had 80 hrs on it. The front tires are semi pneumatics, but the dealer told me the rear drive tires had been foam filled. I thought this was a good thing when he told me since he said I would have no flats and I figured the extra weight would help on my hills, but after reading on here I am getting mixed opinions on this. Do you guys think I need to get them off of the mower? Is it possible to remove the foam fromn the wheel and tire, or is a permanant? To get rid of it will I have to replace both wheels and tires? Or do you guys think I should just leave them on.