Strap Mounted – Designed primarily for vehicles without a hitch receiver. The plus points for this type is that they are typically easier to mount than the other styles, making them perfect for occasional use as you can get them on and off quickly. They are also typically cheaper than the other styles of the rack. On the negative side, as they lack a truly solid attaching point they are not as secure, and you must ensure that you attach them properly before loading up the bikes.
Strong Securing Points – The bike has to be attached to the rack somehow, and this can be one of the most important parts of the design. The securing points have to combine the strength to hold your bike whilst also being gentle enough to not damage the frame, wheels or paintwork. Don’t underestimate the holding power required either. As your vehicle barrels down the freeway, there can be quite a bit of wind buffeting the bike. It needs to be held securely so you don’t glance into the mirror to see your beloved two-wheel steed flying off the back of the car!
Once it’s in place you can lock the clamp to secure the bike. You don’t have to lock it to keep it closed, just to prevent anyone else from opening it. For anyone to steal it once this is locked they would need some serious equipment to break the clamp arm or the clamp itself. The times I did leave it unattended I ran a lock through the system just in case.
The Outbound ties to your vehicle with heavy-duty, double-stitched webbing straps, while twin compression straps help secure the load to cause minimal friction and noise while driving. Made of double-coated IP-X2, phthalate-free TPE laminate material that’s been certified to be weather resistant, it’ll provide amply protection from all the elements. A three-sided zipper makes it easy to access, and a storm flap that covers the zipper seams reinforce weather protection.
I am not sure if it would be possible to have 3 or 4 UpRide racks on one car. 2 is certainly possible. 3 probably is possible but I doubt if 4 would fit together as the UpRide is wider than the other Thule bike racks. The following image shows the UpRide as the third from the left – as you can see it takes up quite a bit more space (width) than the others. Then again, maybe your car is wider than my estate.