I just tried installing these on our new 2009 PreRunner Sport. Here in AZ the sand, rocks and dirt in the air really damage headlights especially the plastic ones. I have had to recondition my cars headlights 3 times over the last 6 years as a result.
So, we though we would order these when we ordered our Weather Tech bug deflector (which fit great by the way). We followed the instructions to the tee. An hour and a half later they still do not fit well. The problem is where they curve around to the turn signals and up near the hood. If you look at your headlight you will see there are a lot of curves occuring there. We used a hair dryer, per instructions, and it helps but you still end up with bulges and wrinkles in the material. I was able to get most of them out. But I have concers that they will lift over time.
If I was to do it again I would cut some of the material off right there. Much like if you were doing upholstery around curves("V" cuts). This would fix this problem. The rest of the fit is great it is just this one area that creates all of the problems. Material is very thick and must really be warmed to work with.
Now we will see how they hold up.