1. Junk the tire and get a new one.
2. For the tight lug nuts that won't budge
a. Take a ball peen hammer and tap on the nut
b. Get one of the propane torch and bottle (or just pay about $20 more and get mapp gas which is better)
c. Clean off the grease and/or penetrant that you sprayed.
d. Apply heat all around the lug while tapping. You may see some bubbling from the heat which means its doing what its supposed to do.
e. Try and loosen nut and she should break free for you.
Also, use a 6 point lug wrench with a breaker bar if you aren't already. 12 point sockets can gall the nut when they are stubborn like this.
Lastly, if it's been that long with the tires, you should at least have the wheel bearings regreased or simply replaced. Fairly easy DIY job and just get a $10 bearing packer rather then the less effective hand method.
If you break a stud you may wind up buying a new hub anyways as the labor to fix would be more than a new hub
