New shoes

I took the trailer into town this morning and had new shoes installed so now I feel more comfortable in starting out on any new trips.  The old tires were only a little over two and a half years old but were showing some strange wear patterns.  One of the internet forums that I read has a thread about my old brand of tires that listed several with the same wear patterns that I had plus they have had several blowouts on the road which I hope that I have avoided.  It's a known fact that trailer/RV tires don't wear out from miles on the road but usually have to be replaced due to aging from the sun.  Four 17.5" 16 ply tires aren't cheap but worth it for peace of mind.