I never heard any clunks , but 1.5 week ago , my front left upper ball joint broke , 300 feet from the house! at 5-10 mph...wheel just caved in under car... luckily for me it did not break the night before as I was cruising 95 on the frwy...! You better check out all your front end parts, replace whats old and worn..... I thought had replced all mine two yrs ago (8K mi ago), but evidently only did the tie rods and a-arm bushings, ball joints prob. "looked good" at that time... I`m glad that ball joint waited another 3 miles to break, it could have gotten ugly the nite before, like I might need to re-paint the left side, get new sheet metal and maybe a new elbow (I had it resting on the door/window going along the conc. barrier...)