Yea, if you've got a good dealership I would talk to one of the tech's there and see what they say. Best thing to do would be to have it studded, have the tunnel protectors added, and have the carbides changed to slightly deeper set all at one time. It won't be cheap, even if you did it yourself, but I feel it's worth it.

Also, If you're bottoming out the suspension often, you might need to re-adjust it for your weight as well.