Tires: Tire Warrantees vs Brand, rv trailer, rv dealer

Question
QUESTION: How can I obtain information on the "Mission" brand RV tire?  We have traveled about 15,000 miles over the past two years and one of the tires (10 ply rating new trailer tire) is coming apart along the outside edges on both sides, according to the specialist, and will not hold air.  The tire still has approximately half of its tread.

ANSWER: John,

 This is a brand that I'm not familiar with however, if you could send me ALL the DOT numbers I will be better able to answer your questions.

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QUESTION: Mission RV Trailer Tire
ST235180R16
DOT4YB3CQ1C
10 PR Load Range E
TC-108

Answer
John,

 This appears to be an OE tire installed by the RV manufacture.  It is a "China" built product.  The RV dealer is responsible for the warranty.  Keep in mind that if the tire is 4 years old or older the likelihood of a warranty applying is slim.  I am unable to tell you the age of the tire due to the fact that the week/year dates are missing from the info you sent me.