Carrier/rack problems of the 2005 Chrysler Town & Country

I was driving at 35mph, then I slowed down to 20mph to cross over a set of railroad tracks. As I was crossing the tracks, the drivers side sliding door opened, then closed. (the doors are remote control doors. ) this was the very first time that this has ever happened. I was talking to a few people about this situation, to come to find out, that this is not uncommon. I would like to know why Chrysler hasn't done anything about this problem. They need to step up to the plate and fix the problem.

Purchased douglas xtra track ii tires at wal-mart in August 2011. One week to the day later with less than 100 miles on the tires one blew out. Complete failure ripped the middle tread blew apart. My daughter with a learners permit was driving and thankfully at a slow speed of about 40 mph. Returned the car to wal-mart. They did not warranty the tire but did replace it under the road hazard warranty I had purchased. Two of the remining tires had significant creases on the side walls. The mgr. Said that is normal where the tire is put together. All 3 tires were low (1 week after install no off road). They aired them up and replaced the blew tire and I had to pay for the road hazard warranty on the new tire. The tires bounce, they lose air constantly, I air them up weekly. I have asked repeatadly about the wedges in the side walls which are getting worse. I am told it is normal and I may want to purchase new tires for a smoother ride (bounce). They re-balance as often as my road warranty allows and that improves bouncing usally for about 10 days. I have talked to several people who have simular problems with this tire purchased at wal-mart. On your site I see at least 17 complaints about this tire but no investigations. I guess that speaks to who wal-mart has in their pocket. These tires are an accident waiting to happen and I am sure they have caused some. According to wal-mart the seperation of treads are a road hazard so I am sure accidents are chalked up to bad roads, not bad tires. I mean wal-mart says it so no investigations are completed. I am a certified safety professional and certified hazard control manager, so who am I to argue with a wal-mart tire manager?.