I am running with Goodyear Marathon tires since I bought my 5er in Sep 2009. I have had 1 blowout, which damaged the under carriage of my 5er. I have also had one flat due to road debris...no way to avoid and I had one tire replaced as I saw that the wire has separated. I always ensure I leave with 80 psi and travel no faster to 65 mph. Even thought it takes a little longer to get where we are going at least I have only had 3 problems with my Goodyear Marathon...knock on wood.
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