Well in that case, I'd imagine contact patch has a lot to do with that decision. By the upper a-arm being shorter, it pulls the top of the tire in more than the bottom of the tire comes in during droop. This allows the a-arms to travel down in their respective arcs while still allowing the tire to maintain a rather flat contact patch on the road instead of riding up on one edge or the other.

Sean Strawmyer
Back and ready to rock...... crawl.

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