Originally Posted by gfiber
I wonder if the 2009 rear springs have been changed from the 2008. If Toyota has so much trouble with the 2005-2008 they issued a TSB, makes me wonder why they would set themselves up for another round in 2009. Possibly the other 2 leaves are of some different spring rate even though the top leaf one has the " bad" spring part number on it. My 2009 is a VIN LU42N.
Might just be easier to purchase a helper spring from an off road or aftermarket shop if I need it too. I did read when the TSB was installed some still noticed considerable sag in the new springs when hauling.
Thanks for the reply.
The springs are the same...A major change would most likely have a new part number so as not to get confused with the "old" springs. As far as why they haven't changed them- There are TONS of folks who buy these trucks and haven't had an issue with the ride or loading (mainly cause they don't and they like the cushy feel of the pre-TSB truck) It's cheaper for Yota to replace the few that people don't like insted of redoing the entire line.
That VIN is just a segment- It translates into "Long Bed Double Cab 4x4" or something like that...Toyota revised the current TSB because folks they thought didn't need it were asking for it.
As far as sagging afterwards....I haven't heard anthing reasonable....Some folks have put at or above the maximum capacity of the truck and had it sag pretty low...but you can't surprised be or hold that against the truck...
best of luck deciding what course of action suits you best...