I just went outside to get something from my car and I noticed that I had a flat. So, I changed the wheel to the spare and put the flat in my trunk. The problem is that I wont be able to get the flat replaced for a day or two, so I'm wondering how long it's safe to drive on the spare. Since it is a full size spare can I treat it like the regular wheel, or should I keep my speed lower than normal. Also, is it a good idea to change all the tires or should I just worry about the flat one. Thanks for any advice in advance