how tall is too tall? You can be to short, never to tall, lol... I am 6' 5", with a long torso. I fit fine in the Tr4, (I do get some bugs on my forehead.) I can even put the top up in a pinch. I push the seat all the way back, and I unhooked the rubber "springs" on the seat in the back, and let the foam drop down. Easy to reverse if I ever sell the car.