The 2005 Uplanders, Terrazas, Relays, and Montanas were known for brake issues. The rotors could not handle the weight of the vans and overheated and warped. There was also some reports that the dust shield was inadequate, allowing dirt and other debris to get on the rotors.
The following model year bigger, oversized rotors were added (6 lug) to solve the issue.Is this the first time you are replacing the brakes? If so consider yourself lucky as there are owners who have replaced theirs 3 or 4 times by now with the same mileage as you.
Since the vehicle is probably out of warranty, I would take it to a shop and have them install heavy duty rotors for this van. They are available and are only a little bit more in price compared to the OEM ones. Many dealers just replaced the rotors with the same style, perpetuating the problem. Many told their customers there were no bigger, better ones when in reality there were. I just had mine replaced on my '06 and I used a newer brake pad on the market sold only at NAPA called AdaptiveOne. Here is a link with some info:
http://www.aftermarketnews.com/Item/...rake_pads.aspx. These were recommended to me by a mechanic friend who uses and installs these.
The newer rotors I mentioned earlier that are an "upgrade" are about twice as thick. The calipers
usually are not an issue.