Lowered Centre Of Gravity and Traction

Have you looked int other chevron type tires? The Imex Trail Dawgs are a similar tread pattern, but are much softer than the Maxx tires. You could aslo try modifying the tread on the stock tires to increase traction. Start by slicing every other rib so that they are more flexible. If that doesn't work, try cutting every other rib so that look more like knobbies.