I changed the belt on our 2007 Town & Country, and did not need to remove the tire. Go to AutoZone or Advance and rent a serpentine belt removal tool (basically a long handle with a 3/8" square drive on the end). This makes quick work of a job that could otherwise take too long.
Advice: use only the Mopar belt. They last a long time and they're quiet. Notice the matte (non-gloss) finish on the top surface of the Mopar belt? If you look close, it actually looks like a knurled surface and this keeps the belt quiet. I replaced the belt as preventative maintenance with a Goodyear Gatorback and it squeaked like a mad mouse. The glossy surface on the top of the belt (especially where the label was) would squeak on various pulleys as that side rode on the pulley. I put the OEM belt back on and it stayed on until we traded the van at 44,000 miles.