(one must be gentle) they can hold hands. Love Flamewar and Shadow Striker together so much. The smaller side of Flamewar's hand, where the thumb is, is what we squeezed through Shadow Striker's hand slowly, be careful
Also spinning wheels image that is either just non-sexual sensuality pg13 or somewhat lewd (imo also in pg13 territory) depending on context. Going by Lost Light where Roller is spinning Nickel's wheel feet in public and commenting that she has very nice wheels while Nickel smiles about it and enjoys it, it isn't necessarily horny enough or intimate enough to avoid doing in public. But on a basis of Devils Due (humor, decidedly, but still) it might be given that in G.I. Joe vs. The Transformers III Arcee flirts with Bumblebee by saying 'forget kissing you if you win our race to the spacebridge, I'll rotate your tires instead,' which while decidedly different than spinning someone's wheels since rotating tires means switching tire positions on a vehicle/bot (which is actually important for maintenance and upkeep which raises more questions), Bumblebee then yelling 'Wahoo!' and racing ahead makes us wonder how he'd feel about wheels getting touched in general.
For the sake of our own writing we share on this account and this image, we write sensory touch of different parts of the body of a transformer in this manner whether wings or wheels or back stacks or doors or tails or what have you as something partnering bots do for aesthetic/gender affirmation and euphoria which does confer a sort of pleasure of 'making real' (if you want to be academic, reification) in particular in part because it helps them connect with their alt mode and the shape they enjoy, rather than er, a sexual drive, though it certainly can be sensual. We suppose that touching one's corresponding arm or thigh parts while they are in alt mode would be similar, though we haven't written that yet. It's not just a multimodal thing though, its also just, sharing one's shapes with each other and making love in that regard. Which is a very trusting intimate thing to do with someone whether or not sex is involved, as many asexual people could tell you. If you want examples of our writing in this sense, you can check out:
-some chromeblade smooching and wing and wheel touching in Chapter 7 of Rekindling Flight, before we figured out how to write the euphoria aspect of this in a lovemaking manner. We might go back and add to this.
-Chapter 3 and Chapter 15 of Addendum (an IDW1 Arcee novel fanfic) with Arcee/Codexa and Anode/Lug respectively, amusingly Chapter 3 is before Arcee's surgery and Chapter 15 is before Anode's while she and Lug are still trying to figure out their genders, so they both have a sense of trying to give and/or receiving euphoria to help with dysphoria by reifying parts of the body the two wanted to change
-Trusting Transformations is an Arcee x reader fic that also touches on this (the reader's character is a gender/aesthetically expansive transformer)
We want to talk about casual or reassuring contextually non-sensual public touch of alt mode kibble is commonplace among friends or from aesthetic/gender kinship but don't have the spoons to get into that and real world human bodied parallels rn. And yes that, and intimate affirmation touch are all things we have experienced and that we are deeply glad for