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REAR BRAKES/TRANSMISSION
I have my 2005 Sequoia since 2012 and I see that most of us have Trans. Problems. Recently I was talking to my
friend about the size of the Rear Brake Rotors. It is understandable that front breaks work first, Per Toyota, and because of the distance for brake fluid to travel further the rear brakes take action later. So Toyota decided to put small
rear rotor and small Brake Pads (thus rear pads are changed twice for one front pads). Anyway I am just curious as to
the thought that this silly design flow may the the cause of our Trannies failing prematurely. As discussed by many Experts and non experts the Drive Shaft or the tranny might be at fault but I think because of the Rear Brake acting later then front brake this puts a Helluva strain on the Drive shaft and the tranny as the vehicle comes to a stop and from high speed the vehicle tilts forward very awkwardly and the tranny does not have time to quickly fall back to
Neutral or First gear fast enough and the delay is what you hear as a THUD or being REAR ENDED
friend about the size of the Rear Brake Rotors. It is understandable that front breaks work first, Per Toyota, and because of the distance for brake fluid to travel further the rear brakes take action later. So Toyota decided to put small
rear rotor and small Brake Pads (thus rear pads are changed twice for one front pads). Anyway I am just curious as to
the thought that this silly design flow may the the cause of our Trannies failing prematurely. As discussed by many Experts and non experts the Drive Shaft or the tranny might be at fault but I think because of the Rear Brake acting later then front brake this puts a Helluva strain on the Drive shaft and the tranny as the vehicle comes to a stop and from high speed the vehicle tilts forward very awkwardly and the tranny does not have time to quickly fall back to
Neutral or First gear fast enough and the delay is what you hear as a THUD or being REAR ENDED
0
Comments
Brake circuits are a closed hydraulic system. Also, circuits are dual, diagonal. (front right, left rear). The application of brakes is not dependent on the length of the line from the reservoir or pump. Both front and rear operate simultaneously.
With the extra weight in the front of the vehicle, and the weight shifting forward during braking is why the front brakes take on the majority of the braking duty, and why the rotors are bigger in the front. (and, why the front pads may wear more quickly).
Most front engine/RWD vehicles operate this way.
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That is what prompted me to comment about rear Rotors.
There is no connection between the transmission life and the brakes as originally theorized above. Transmission lifespan is more dependent on driving habits and maintenance.
About being a closed system., that's true until it isn't. Under most "normal" stops it would be correct. However, the moment the system has to activate the dynamic proportioning, or the ABS system needs to become active the first thing the ABS controller does is isolate the wheel that is locking up and it then controls it as an individual system.