You can find walkable, safe neighborhoods all across the city, so it will likely come down to the location of your work, and the type of lifestyle you prefer (laid back, in the scene, family life, etc.). I live on the west side myself, so I'll speak to this area.
What is a Concave Wheel? Concave Technology takes the center of the wheel and dips inwards to give it that bowl effect. Rather than exaggerating a bigger lip for the back wheel, and a smaller lip for the front. Concave wheels emphasize the concavity of the rear wheel to differentiate from the front wheel.
Positive Offset wheels have their mounting face toward the front face of the wheel. Negative Offset wheels have their mounting face toward the rear of the wheel. The easiest way calculate wheel offset is as follows: First, measure the overall width of the wheel (remember, just because a wheel is 18Ã7.5, does not mean that the OVERALL width is 7.5â. It means that the measurement between the outboard flange and the inboard flange is 7.5â). Next, divide that width of the wheel by two; this will give you the centreline of the wheel. Overall width/2 = Centreline