TSB T-SB-0305-08 Revision 2 includes 2009 and 2010
I have a 2010 Double Cab 4 x 4 TRD Tacoma. I called the dealer last week and they approved changing my rear leaf springs over the phone. I had them installed Monday. The new TSB includes 2009 and 2010. It is the same number as the old TSB T-SB-0305-08 but it is the second revision. The new springs raised the rear about 1.5 inches or to the height the truck was when it was brand new. I have 250 miles on the springs now with little or no settling yet. My Tacoma was bottoming with no additional weight in the truck going over convex depressions in the road that are perpendicular to the direction you are driving. I think they are drainage areas to collect the water from the road. The new springs are great. The ride is not harsher. The ride is stiffer and the spring does not collapse and the rubber bumpers do not hit on the frame. In my opinion it rides the way it should have rode if Toyota had put the proper springs on from the factory. It now rides like a truck not an like old 60's or 70's Cadillac!!!