I have a yeti urban with approx 13,000 miles on clock. Noticed a dull rumble noise from front nearside when going extremely slowly over any slight undulation on road. Above slow speed the rumble is still slightly audible. Can any Yeti gurus suggest possible causes? the car goes into the dealer for investigation next week. ps. if i open the bonnet and bounce the car on its suspension there is no noise, could this possibly be aloose brake caliper? thanks for any help.