Originally Posted by Pimprnel
I just purchased a new 2007 Safari. Took it on our first trip and within 500 miles had a blow out! Was very surprised as my other Safari had same tires. Put on the spare and it is a Marathon same size etc. The spare tire itself looks different on the outside but is the same Marathon. Went to tire shop where we were camping and asked for a replacement to have a backup for return trip. He put on a used for now until I could get in touch with the dealer. He commented, the side wall on the Marathon blown out seemed on the thin side for a trailer this size. Trailer is a 28ft. at 7300 GVWR. The Marathons on it are a 6 ply which seems to be low based on what others are writing in the forums. I also noticed on 2005 unit and the 2007 that there are waves in the side walls as mentioned in other posts. I will surely look in to this. The dealer is currently checking in to the matter for me.
As noted earlier it's not unusual to see wave's in the radial tires. It is part of the construction process. You just don't want the bulges in the sidewalls which indicate a sidewall failure.
Just a couple of questions, did you check out your tire pressures before you left on your first trip, or did you assume your dealer did this for you? Second and third questions relate to the tires themselves. Did you check whether you had a load rated D tire and did you look at the manufacturing date of the tire that failed? I 've seen a situation where a new Classic trailer was found to have a C rated tire in its mix of 4. That C rated tire blew.