Originally Posted by
silent_chief
I do crank the QR down pretty tight. I feel also like sometimes the creak comes not just from hard pedaling but when the wheel is put to some lateral side to side stresses.
Do you have a closed- or open-cam skewer? The open-cam types will not achieve the same clamping force as the closed ones with the same lever effort. The mechanism should be well-lubed.
What is "pretty tight"? The lever should leave a mark on your hand. I make mine tight enough that I have to really pull hard to open it.