The car can sit on rims forever. Its just when you drive it on a rim where a problem can occur. Yes they can tow it from the front or back, obviously the flat tire would be the side raised in the air. Or they can put it on a flat bed tow truck. But the obvious quest here is why tow it for 50 bucks when the only thing wrong is a flat tire, just change it and put the spare on it in the driveway. Pay a neighbor or someone to do it if you can't. If you have a AAA membership, they will come out and change the tire and put your spare on for free. If you dont have a spare, then take the tire off and have someone drive you to a tire shop and put a new tire on the rim.