I have been doing some LMTV tire work recently and used this tool:
http://www.uniquetruck.com/p-16732-...UjrPUTO6rtkt8x-IVGPaVoOEA-z6mcZsY8aAjLk8P8HAQ
You can forget about needing a cheater bar to break the nuts loose (1-1/2" lug nuts). Just start cranking the handle to break the toughest nut. The nuts I removed before buying this torque multiplier required a 6 ft cheater, and considerable effort. Tight!
There's a 1" drive extension in the kit that works with the speed handle to take the loosened nuts off. This tool comes with a 1-1/2" socket, 1" drive. The same tool is available not as a kit, for a lower price, if you have 1" sockets already.
I also used the tool for the wheel disassembly nuts, 15/16" deep socket, but had to find a socket for that. I used a 1" to 3/4" adapter because I already had 3/4" drive deep socket of 15/16" size. That combination was a little long. A 1" drive 15/16" deep socket would have been better.
BTW, unless you know the leaks were tire related, you should evaluate first. Might be an o-ring leak (buy some spare wheel o-rings) or a ctis related leak.