Can mitsubishi dealer sell me a tire?

hi folks i hit a curve last night had a blow out on the front tire of my 2008 lancer... i put the donut on for now...but being that it is july 4th weekend everything is closed..if i go to discount tire i will have to buy 4 brand new tires when all i need is one of the same brand.. do u think mitsubishi dealer ship will sell me just one tire of the same brand??? thanks folks. also is it ok to drive with a donut on until monday today is saturday i need to go to work sunday and monday morning???? thanks again|||Any tire dealer that carries that tire can sell you a tire.|||sure buy why go to a tire store would cost you less and most likey where hes going to go get a tire at and you dont have to have same brand just same size and if discount doesnt carry it go to another tire shop not a dealership which would charge you twice as much donut spare good for about 100 miles at 45 miles per hour and should last the week end if you dont drive all over town shouldnt drive the freeway with it and if you really had to you could buy a used tire to get you thru th e weekend might cost 25 bucks been a tire guy 35 yrs or more discount wil sel one tire thats all you need and you can buy a used tire pretty much anywhere they sell tires dont have to be same brand just same size|||A dealer can not sell a tire. It sells cars only. I'm not sure