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I had six new firestone radials, 18.4x38's, and two used ones on a tractor I purchased five years ago, I now have the two outside tires on the front I want to replace,firestone tires to match the tread and ply of the other six will cost $1200 Each, and my tire guy told me they will be getting more expensive, I should at least order them now. WTF! John
I have found the same thing as Dennis said.
I think it is impossible to keep any of them very long when we have a 500 gallon water tank on the front to spray. They will all split eventually. We have had some luck with the titans.
I'm still betting that after those tires are made they stand them up before they are ripe.