Are the front and rear springs designed to lower the same amount, in terms of inches? If so, I believe it is normal for the fronts to be slightly higher. I think our cars were designed to have a slight rake, where the front is slightly higher. Do not judge a car by it's fender gap. My car is lowered on BC coilovers and I have a 1 finger gap in the front wheel well and 0 finger gap in the rear, tire is sitting flush to wheel well. This caused me to initially think that my car is more lower in the rear. However, when I measured the height from the ground up to the wheel well, it turned out to be identical all around. This leads me to believe that the car's chasis was designed to "look" more low in the back despite lowering the same amount all around.