Well, any tire will weather check after 3-4 years worth of exposure to UV, road salts, oil, and anything else one might get off the roads these days. Doesn't really matter what brand or where they came from. In many cases, it's simply a matter of lack of maintainance, rather than tire quality. The tires on my truck were installed on the wheels back in '96, for example. But they have been kept clean, garage kept when not driven, and have had a light coat of protectant applied when the tires were cleaned. They still look new. Same for the tires on my parents vehicles, an '02 Envoy with the OEM tires, and an '88 K2500 with tires installed in '94. All of them are Michelins, btw.
