You may not want to spend the money, but if it was me this is what I would do. Since you do not know a whole bunch about, tire, wheels, bearings, and axels, this first time, I would take it in and have things checked by a professional. When he breaks stuff down, he may spot a furture problem, that you would have missed. This can save you time and money in the long run. Better to pay him now, than be broken down on the side of the hwy somewhere in Wis. ruining your vacation.
24 hours in a day, 24 cans in a case, you do the math