Tramlining is when the tires follow grooves in the road. This is common on sport cars with ultra-high performance tires. Our LR3 would dart right and left with abandon. My brother-in law refused to drive it, as did my wife. Is there anything worse than your wife refusing to drive your 2 month old >$50K truck?
Rant: The toe was severly out of specification, with too much "toe-in" (pigeon-toed) both front and rear. The handling was dangerous, but they said the alignment was fine when I brought it in at 1.5K, but refused to give me a copy of the alignment sheet despite repeated demands

They obvisouly lied about road testing it too. When I brought it in at 2.5K to replace the tires, which were now completely bald on the outer half, I was livid, as I was convinced something was wrong with the truck and they were incompent/not being forthright. I insisted they recheck the alignment, stating that either the frame was bent, something in the suspension broken or it had too much toe-in, upon which they confirmed the toe-in malady. They also accussed me of swapping old tires onto the truck too. I have never enjoyed filling-out a follow-up survey more.