The new brakes are now installed and I have put them through the recommended bedding-in process. The installation was easy enough as all the bits were same as stock. I took my time with cleaning and lubricating parts, as necessary, before reassembly. The entire process took me about 4 hours including refreshment breaks.
I am no brake specialist, but I liked what I saw with the slotted Centric Premium rotors and the PowerStop Z23 brake pads. The brake pads are the main unknown to me since I've not used that brand or compound before. PowerStop included packets of high temp silicone grease and a kit of stainless steel hardware with each set of pads. I used the grease during reassembly and it was good quality. I did not use the provided stainless steel parts for two reasons:
- In comparison to the stock springs, clips and slides, the ones provided by PowerStop were of a lesser quality - very thin and easy to bend by hand.
- The OEM parts on the Sienna were still in excellent condition, so I left them in place.
I followed the bedding-in procedure recommended by PowerStop for their Z23 pads. It is a slight variation from the recommendations from other brake pad companies, but seemed to work well. PowerStop said that I should slow (5) times rapidly from 40mph to 10mph without letting the rotors cool, then do (5) more times from 35mph to 5mph without letting the rotors cool. Smoke was pouring off the brakes by the time I was done! After that, drive for several miles without using the brakes to allow them to fully cool. When complete, the brakes are supposed to be ready for normal use.
Later that afternoon, my wife took the van out to the store. On returning home, she said that the brakes felt really strong and smooth. I know that's subjective, but happy wife, happy me. At this point, only time will tell how this combination of parts will hold up. I will post back in roughly two months with an update. I'm sure my wife will have abused the brakes pretty hard by then since she is not good about downshifting on the long, steep grade that she drives every day.
For those who want to know, here are the part numbers and prices for the pads and rotors that I installed on my 2012 Sienna XLE:
StopTech Sport Slotted Rotors (Formerly Known As: PowerSlot or PowerStop by Centric)
(Purchased from Rock Auto):
Left Front.. 126.44158SL $84.79
Right Front 126.44158SR $84.79
Left Rear... 126.44166SL $63.89
Right Rear. 126.44166SR $63.89
Shipping, Ground........... $20.04
GRAND TOTAL COST.
$317.40
PowerStop Z23 Evolution Sport Brake Pads (Carbon Fiber / Ceramic Compound)
(Purchased from Summit Racing):
Front.. Z23-1324.......... $54.97
Rear... Z23-1391.......... $49.97
Free Ground Shipping...... $0.0
GRAND TOTAL COST $104.94
TOTAL COST OF BRAKE JOB: $421.80