Oops! I missed a couple of posts or questions:
I haven't needed a spare tire in over 35 years! But I still carry them. Depending on which photo you're looking at, you may have seen a photo with just a trailer spare (left side), just a GTI spare (right side), or both. If you're packing a full-size spare in your GTI, are you aware that the rear interior panel is cut for the donut? Check this article for details:
https://stealthgti.com/2017/10/16/spare-tire-access-improvement/.
I do have an upgraded intercooler. It's by APR. I did that during a Stage 2 upgrade. It may have helped while climbing with the trailers.
Thanks! After a quick blast to FL this fall, my next road trip may be one that knocks out the northern states in 2022.