recently my VX has started to "thump" while going uphill... started on steep consistent inclines when accelerating (like on an uphill highway entrance ramp) now it occurs on most inclines in the road and thumps as the gas is applied. the thump is regular when it occurs but does not occur constantly...seems to skip a beat or two. the TOD lights will jump from one to two as this happens, but not on every thump...maybe 2 out of every five thumps the lights correspond to the noise.

new tires bout 6000 miles ago...got 275s instead of the recomended 265s cause its all they had...fyi