I can help answer the questions you have about the Saris Bones 3 # SA801BL.
You are correct that the plastic ratcheting cradles will make attaching the bike to the rack easier than the rubber straps. Typically the rubber will stretch easier in warmer climates and loosen up after repeated use. You are also correct that because they are plastic they have a higher chance of breaking especially in colder weather conditions. We haven't heard of any cases of the buckle breaking or coming... view full answer...
We usually gauge trailer hitch installation difficulty by how long it takes to install the hitch. This hitch requires that the exhaust be temporarily lowered and that a heat shield be modified or trimmed so the hitch will fit. We estimate that if you have all the proper tools and another person to help, it will take about 50 minutes to install the Curt Trailer Hitch, # 11372. If you have some automotive experience, this installation will be mildly difficult. I have included a link to the... view full answer...
The instructions I found for the Thule Roof-Rack Fit Kit for Traverse Foot Pack # THKIT1426 said to use the sliding dial number 30 on the front bar and that there should be 37-1/2 inches between the Traverse foot pads when installed correctly.
Try that and let me know how it fits. view full answer...
You will not need any additional parts to install the Draw-Tite Class I Trailer Hitch, # 24923. If there is ever the chance you would want to pull a small trailer you'll need to add a wiring harness # C56142 which will easily plug into your existing wiring system behind the tail lights.
Since you're also looking for a cargo carrier, the 47 X 19 Curt # C18110 . Since the only hitches available for your vehicle are Class I you're going to be limited to 200-lbs tongue weight and carriers... view full answer...
I spoke with my contact at Pro Series and he confirmed that on the Pro Series Anti-Rattle Device for 1-1/4" x 1-1/4" Trailer Hitch Receivers # 63090 referenced in your question, the bolt can be used on the top, sides or bottom of your receiver.
This anti-rattle device will slide onto the shank of your hitch-mounted accessory and press up against the trailer hitch receiver. The bolt will then be tightened down to minimize rattling and movement inside the receiver. view full answer...
The Curt # C11047 is the correct hitch for your 2012 Lexus 250C. Most mechanics are able to install a hitch receiver so you might check around local shops to find what they will charge.
The hitch is a Class I so you'll need a bike rack to fit. The Thule Helium Pro # TH9042PRO will fit and there's no need to have any additional holes drilled because it includes locks to secure the rack to the hitch receiver. There's also a lock to secure the bike to the rack. view full answer...