Takes me the same amount of time to pull a tire as it does remove the bolts that hold the engines shield plate on. With the oil on my truck, you have to remove the oil filter housing using a special tool, once you use drain the housing using special nipple thingy that comes with the filter kit. Only then you can access the cartridge filter inside, and replace it, being sure to fill it back up before reinstalling the o rings, and housing drain cap. Now that you've done that, you can move over to removing the drain bolt for the oil pan. You still have to replace all that stuff after.
Removing a tire takes a few minutes to expose the pads, and caliper. You pull the 2 retaining spring wires from the caliper /pad pins,...remove the pins, and the pads come right out. Just slide in the new pads, and reverse the procedure...you're done. Of course it's a bigger job if the rotors are toast. Oh yeah, don't forget to put the tire back on.