Originally Posted by mtb4life
The dot is pointed at the exposed portion of the hub in between the spokes of the rim.
This is where I put the laser,are you talking about the brake drum behind the rim that you are pointing the laser to? If that's what you mean that will be directly related to the amount of braking that you were in doing, if you're concerned about the bearing temps then you want to be where my finger is pointing I believe. If there is a difference from each axle it could be that the brakes are not adjusted properly. I'm no expert by any means but this is the way I learned to keep an eye on the temperatures. Of course most of that was putting my hand on each one and making sure was never hot to the touch, but now I have the laser to get a more accurate temp.