The bedliner failure with separation was a common problem with the early Titan years. I've read that many times the entire truck beds were replaced under warranty. I seem to remember that later, instead of having entire truck beds replaced, Nissan resorted to having the bedliners repaired.
Other trucks that may not have had the bedliner separation problem had a discoloration problem with the spray material, it would turn white.
My Titan didn't come with bedliner but I had my truck bed sprayed with Line-X three days after purchase and I've never had a problem with mine.
The newer Titans seem not to have the bedliner issues anymore since I haven't read any recent threads with the problem, so apparently Nissan resolved the problems. Someone will come along soon that had personal experience with the issue that can be of more help.
Other trucks that may not have had the bedliner separation problem had a discoloration problem with the spray material, it would turn white.
My Titan didn't come with bedliner but I had my truck bed sprayed with Line-X three days after purchase and I've never had a problem with mine.
The newer Titans seem not to have the bedliner issues anymore since I haven't read any recent threads with the problem, so apparently Nissan resolved the problems. Someone will come along soon that had personal experience with the issue that can be of more help.