I think they are fine. Now that is relative, others may not. Yes upping the gears would be very beneficial and when I have the $$ I will but I don't now. I use the power setting on the tranny around town and concede that she wheezes at highway speeds with incline, like Cajon Pass or the Grape Vine. I can drive all day at 80 on the freeways locally without issue. The torque of the 1FZ motor keeps me happy off the line but I am not a speed demon, as my screen name implies. I can vouch that it is way better than turning 35s with 4.88 gears and a 22RE that my 4Runner had.