I just picked up a 1998 Suzuki ltf 500. It has the full time 4wd. When I test drove it, it felt slower but I didn't think much of it. A few days later i went for a ride around the neighborhood with my buddy. The roads were icy and right after taking off he told me that my rear wheels are not spinning like the fronts do when I give it gas. I didn't hear any weird noises or grinding when driving it that day or when i originally test drove it. I took it home and jacked it up. When in gear the front tires spin, the rear drive shaft spins but the rear tires dont. If I hold the shaft still I can spi