Replaced the Dunlops (D401 frt, K591 rear..DOT numbers showed 4 months (frt)and 2 months (rear) old when installed) on my 07 Low Rider last week. Got only 3400 miles on em. They were all cracked. Looked like they were 20 years old. Never had a tire do this in the past. My ride has 50k on it and I have run Dunlops and other brands almost bald before with no problems. These tires were run hard in the deserts of AZ & CA. Well I was at the Harley shop yesterday and mentioned it to them. They said Dunlop had a bad bunch of tires come out of the factory. Anybody hear anything about this???? Got a good deal on some Bridgestones. Had good luck with them on another bike.