One problem related to tire bubble has been reported for the 2010 Mercedes Benz GLK350. The most recently reported issues are listed below.
Continental tires-I have had failures of 3 tires on a new car, a mercedes e350 4matic, equipped with continental 245/40/18 tires. Two tires had weak sidewall and blew out after hitting potholes at low speeds. The last had a bubble in the sidewall.