This was taken April 18, 2010, 2 weeks before we lost our son.  Just finished the 4th tier.  We were stagnant for a while, and it took us a few months to get back into the swing of things.  I think it took us 3 months to get past the 5th tier.  On our biggest days we could get 13 tires packed, and there were avg 67 tires per tier.  We could finish 1 tier in about 2 to 2 1/2 weekends.