it has 140k miles on it. its been sittin in the driveway for about 5 months. and i just charged the battery yesterday. then went to fill up all the tires. and there is one spare tire on there. the tires are really bald and i have an appointment to get new tires on tuesday. my questions are: will it be safe to drive it around the rest of the weekend untill tuesday? and is 85$ to much to pay for new tires for it? it will end up being about 480$ with the alignment and all the fees and crap.