The bearing area of the lug bolt where it contacts the wheel is likely the culprit as opposed to the threads themselves. Lots of penetrating oil , whack deftly with a hammer and big punch , directly on the end of the bolts. Heat with a plumbers turbotorch on the bolt not the wheel if possible. A good impact will be helpful but in this circumstance I would expect to break at least some of the bolts. And when you do get them off by all means use some antiseize on the bolt threads and under the heads and do use a torque wrench to install the bolts again. They only need to be torqued up to spec not god awful tight. good luck Dan

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