Big tars, little bed.
Join Date: Dec 2004
Location: On teh beeg rawks :) Chattanooga, Tn.
Sheesh I thought of an easier to understand example. Similar to my previous maybe the numbers will help. I may pretty much repeating myself but I hope it helps.
Im not sure what the factory sets the BP system at but lets say its 70% front 30% rear.
Lift it 3" neglect BPV lift bracket.
The system now "thinks" you are lighter in the rear therefore adjusting to 85/15.
Now an extra 15% of the work is put onto the front brakes.
Toyota set the BP system at 70/30 and designed it to work this way.
The difference of having one may not show under normal braking and/or w/o a load. Its when you brake hard when it definately shows.
Remember 70/30 stock, unloaded.
Say you put 500lbs in the bed, stock height. The BP adjusts to 60/40 to compensate.
So now you lift it and again neglect a BPV bracket. So unloaded the BP now "thinks" 80/20.
Add 500lbs again and it adjusts to 70/30 when it really needs to be 60/40.
So the truck will be set to stop a stock unloaded 70/30 truck when it really need to be 60/40 correctly brake accordingly for the xtra 500lbs in the bed.
Again, my numbers are examples, not factory spec. But the theory is correct.
And I promise if you off-road you will eventually be going on trips camping or overnight stays, plus you will eventually have a nice collection of recovery gear and junk you like to haul around in case you need it. Thus the extra weight. And when you have to slam on the brakes you'll appreciate having the correct brake bias.
Last edited by GOT COPE?; 05-07-2005 at 04:10 AM.