I managed to install two ProRides, the UpRide and a FreeRide simultaneously on one car (ie 4 bike racks). A total of 3 is relatively easy but adding the fourth bike rack required the pedals to be removed from the bikes and was quite a squeeze. If you are going to install 3 or 4 bike racks then you will need to alternate the direction in which they face (forward-back-forward-back) and you will need to ensure that the various closing mechanisms on each of the bike racks are relatively easily accessible. Good luck 😉 !
[Update] - there are two channels along the bottom of these bars. Having narrowed the whistling noise down to the bar, I tried running 2.5inch wide vinyl tape the entire bottom of the bar, making the two channels flush. Noise stopped immediately. It's a poor design by Thule (noise-wise). If you're ok with masking off the bottom of the bar, that is a viable solution for stopping the noise.
The biggest criticism of the Tandem Carrier is a slight lack of stability due to the rack not having side stabilizer arms as found on competing tandem bike roof racks. To overcome this, one reviewer recommends securing the bike with an additional ratcheting tie down strap—check with your local hardware store—on the bike’s crossbar for extra stability.
Thule 846 Quest Roof Bag Reviewed by Jason B (Douglas, MA) Reviewed for a 2002 Honda CR-V — 2006-08-29 07:07:50 I purchased this roof bag for my 2002 CR-V. Like the other reviews mentioned, the CR-V crossbars are a little too close together to allow the Quest bag to be fully stretched out. But, it sat nicely in between the crossbars and I packed it accordingly. I knew it was only water resistant and planned to only use it for some outdoor stuff (raft, oars, chairs, etc) that wouldn't matter if they got wet. Well, on the drive out to vacation, it rained lightly and everything was totally dry. One the drive home, it poured for a day and half, and everything inside was soaked. But that was totally expected - and if you plan for it, you will be fine. For the cost and convenience of being able to collapse the bag into a little pouch, the Thule Quest can not be beat for its value!!! VIEW MORE REVIEWSShop Thule 846 Quest Roof Bag | Shop Thule
Thule’s number one priority is safety – for you and the people around you. Our fit kits ensure your roof rack fits your car as safely and securely as possible. Also, at the Thule Test Center™, our products are only given the official seal of approval once they’ve survived numerous crash tests, wear and tear simulations, as well as extreme heat, cold, damp, sunlight and even harsh chemicals. All so you’re free to concentrate on the adventures ahead.