I can't really go any higher because of the camper I tow, unless I come up with some crazy hitch setup. Honestly for what I use it for this height is perfect with the 35's. All my buddies have jacked up trucks, and they're nice too, but towing anything would be a nightmare.
I just happened to pull in my buddy's driveway and drive up on his lawn here just screwing around, got out and was completely impressed with how much flex it actually had on stock junk!