mine is quite thumpy in the rear shocks especially early on in the day, they settle down after a while. well i check my suspension with pedders and they found my shocks were leaking oil... so i replace both but the nkocking noise is still there... and they told me that it sounds like it's coming from my sunroof, something might be loose they told me cause it only appears when i go on an angle up and down my drive way... other than that its all good..... so yah today i booked it with toyota to inspect my sunroof, so i hope they can solve it cause that nkocking noise is so annoying Maybe it could just be the car jack coming loose from it's holder or your road side tool kit or your spare wheel and bracket not tightened properly too...