[Burt4x4]

I think..ouch..that it is simply not seated fully. I see you have washer and lugs. Is it possiable the lugnuts are bottoming out right at the same time it hits the washer...so it's not as tight as it can bee? Use more washers to ensure the lug is not bottoming out and yer getting fully seated...
Maybe even install one side, mount the tire and see if it rocks in and out at all..if it doesn't rock I say run it.