hitting holes and seams can cause delamination on solid tires. I have 2 buildings from the 80's with crap floors and have reduced my tire replacements drastically. I switched to yellow "smoothy" tires on my reach and pickers and they are the longest lasting. my sitdowns are all black rubber or non marring and I have been getting decent wear. If your trucks are hitting holes/ docks and uneven floors at speed it can easily cause this.
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