endosch2 wrote:
The Dakine tailgate pad allows you to keep the wheels on.
i do NOT suggest this with carbon, especially for longer drives. The DAKINE (and similar) pads are great at protecting the truck tail gate but rub the bottom of the downtime quite badly. Either you will need a soft towel or blanket to protect, or you will get pad rub. As well it does nothing for carbon wheels dangling out the back asking for someone to swing by and undo a QR skewer.
For wheels on the best solution i have seen used (mainly for MTB, but road/TT will be the same) is to build some wheel/tire holders in the bed out of wood, similar to what is described above, and then simply use a tie down strap around the bars/stem to anchor down on each side while standing up so it won't tip over. Given how easily front wheels come off on road/TT bikes however, i second the designs shared above with a front wheel adapter bolted to a piece of 2x8"/10" wood.