Tire Pressure Monitoring System

[stewartfan]

I have been looking at some of the tire pressure monitoring systems that are out on the market, I have it narrowed to Doran, Pressure Pro and Hopkins.

Do any on you have experience with the above?

Our 05 Jayco has four seasons on the original tires. They do not show any signs of abnormal wear nor are there any cracks in them. I do leave them covered, on wood and 10% overinflated when the camper is not used November till March.
I might put four tires on it this year for peace of mind, a friend of mine is a manager for a large tire retailer here in NJ so I can do this for under $400 for everything.

I am looking for personal thoughts. Thanks.

[snowdogsx2]

RVforum.net has alot of info and very knowledgable people to answer questions like these. What I have read on there about tires is this.
Check the date code on the tires, they could be older than 4 years, the opinions of the "experts" is a maximum of 7 years use, of course If you would be more comfortable, by all means I would change them sooner.
The pressure pro tpms seems to get good reviews.