I also have very sturdy vent louvers which help support the total weight

It is not strong enough to support the weight of the Garmin with it jiggling around asI drive.

Product wouldn’t support the weight of gps

So flimsy it won't support the weight of a DriveSmart GPS, and the clips don't fit the vent vanes on either a 2016 Toyota Highlander or a 2010 Hyundai Sonata -- not exactly exotic vehicles

I also tried the product in Toyota Corolla but the vent doesn't support the weight of the NUVI 660.

Far too small it will never support the weight of this unit

Was just worried it may not work for my 660 because of it's weight and might easily break but the whole mount looks sturdy

But it is very brittle and just the weight of the unit was enough stress to break a clip off with normal driving.

They are too fragile to support the weight

Plus the vents don't support the weight of the GPS

The weight of the unit causes it to not work with the vents in my Kia Sportage or my Ford F-250.

For the Nuvi I have it works fine, and supports the weight just fine

Trek Vent Mount for Garmin Nuvi 200, 200W, 250, 250W, 260, 260W, 270, 205, 205W, 255, 255W, 265T, 265WT, 275T, 500, 550, 680, 750, 760The iTrek mount arms are spring-loaded which make it much more secure than the Arkon.