We have a 2010 Keystone Montana, 13,000 lbs loaded purchased new in 12/10. On 2 short trips in Florida (7/10)- within 150 miles - we have had 3 blowouts with Goodyear Marathon tires, 235/80 16R. Trailer is damaged on both sides, brake wires were cut. We were having difficulty finding enough spares to get home! Insurance company is involved - trailer is under warranty - but this is dangerous. Who can hold Goodyear accountable?