The PIAA wiper blades do not fit my 2020 Toyota Sienna without massive engagement force. The blades are retained on the U-bend wiper arms by two small nubbins in the plastic retention assembly. The width of the Sienna arm is just a bit too wide to fit between the nubbins while slipping the blades onto the arms. They seem engaged but they do not fully engage, which I found out while driving at interstate highway speed in the middle of a rainstorm. I could see that the blade was disengaging from the arm and turned the wiper off before losing the blade.
The next day I found the problem with the nubbin height and was able to force the wiper onto the blade using a wide-open Channel Lock plier to exert the needed force to push the wiper blade fully into the plastic blade holder.
The PIAA blades are great. I used the included Silicone cleaning/treatment, and the windshield is shedding water, and I have good visibility in heavy rains, (and now in heavy snow falls).
The reason for my poor review points is the poor design that does not allow for successful installation. The good thing is that when finally installed with great difficulty the blades work well.
PIAA's Super Silicone wiper blades are the best wiper blades I have used. I purchased these units one year ago and they are still performing very well -- no chatter and they still clear the windshield as well as day one. I run them on all of my vehicles and will continue to do so going forward. If you have not tried these wipers before, you should probably purchase the blade/arm combo first. After that, you can simply purchase the wiper blade refill as they age out. The arms should last much longer.
PIAA Super Silicone wiper blades and the windshield treatment wipe that they include should be standard OEM equipment on every vehicle. Follow directions and you have completely silent, 100% effective wiper blades, water blowing off the treated glass, and they last for years even if you park outside in the sun.
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