Getting under it today to look at brakes and figure this out lolFrom what I've found on the S550 at least, you can see where the pinch weld is reinforced 2 layers and towards the end its only 1 layer. Not sure what the seams look like on the S650 but I cant imagine its too much different. As long as you use the reinforced section with the adaptor it should be fine
But also jack rails give you the insurance of not having to worry about lining it up perfectly. Theres no downside unless youre chasing the last few pounds of weight saving.
Last event leaving saw a guy in a nice Z06 pulling a trailer with his stuff. Did not look like the best solution but if you only have one car it works ?I have BMR, not Steeda, but yes. I suppose they're not necessary and do add some weight but they make lifting the car a little easier/quicker.
Yeaaaaah, that's a different story. Pulled a tire trailer for maybe two events and then ditched that idea.

