Same with mine the truck is under power it bogs down rather than spin the tires. Toyota sure missed the gearing on this truck. This truck is gutless until the rpms are over 3000 which is impossible in sand or snow. The truck will bog down before rpms ever get to 3000
The wheels aren't supposed to spin, it's called traction control. Turn it off and see how it does. Keep in mind, even when "off", it probably really isn't all the way off.