Quote:
Originally Posted by tommarbru
Had a long talk with my Toyota service manager (who is an off-road racer as well) about the freeway hop we experience here in So. Cal on the concrete freeways with the expansion joints. He has been in contact with the engineers at Toyota and stated that that they are aware of the problem and that a few months ago they were testing some kind of "stabilizing" system that would dampen the rocking motion. However, it proved to be too expensive as a retrofit, and it was decided that no further cures were forthcoming from the factory. They also stated that the Tundra was a 1/2 ton truck that was really designed to compete with the other 3/4 ton trucks in regard to load capacity, hence the stiff rear springs. So I guess we are "screwed" and have no hope for a factory cure. I have also tried adding 150lbs. to the rear bed as well as lowering air pressure but the ride is still unacceptable at least for me. What I am going to attempt next is to talk to the "experts" at a company here in San Diego called National Spring who custom fabricate suspension components for the Baja off-road crowd. Perhaps they could suggest if cutting or replacing one of the springs or fabricating a totally new set of softer springs would solve the problem. Will let you know what transpires and what they suggest, if anything.
|
I've read a similar post on the other forum site. The only thing we can do here is to either mod the rear suspension or mod the frame or both. But modifying the frame can be costly and damaging if not done correctly. I have replaced my rear suspension one by one in an affort to lessen the vibes. It worked. My leaf springs are Alcan's, shocks are Rancho 9000XL adjustables, I've installed a heavy duty Class IV/V hitch to stiffen the rear (RCSB w/ SAP), and installed a TRD sway bar. I kept the rear tire pressure to 36-37 PSI. The last thing I need to do is to install Firestone Air Bags so is can carry heavy weights. Adjustables is the way to go in this case. If you're not loaded heavy, there's no need to have a stiff springs and stiff valved shocks. It's a truck but there are products out there to make the ride more enjoyable.