Social media is your friend when it comes to getting your content seen. There are quite a few topics on this within the forum if you have a read through some of the older posts.
But seriously, Facebook, Twitter, Instagram, etc help get your content seen.
You are correct that your friends and family are not going to be the means to an end, but those that support you will help you grow.
I mainly focus on Facebook, although do use the others as well. Create a page on Facebook for your channel that you can use to then join relevant groups. The groups to look for are for fans/owners of the bike you ride, and relevant ones for the content you create. Not all allow pages to join, so you may need to join them as your individual Facebook profile. You need to interact on them as well, don't just go in guns blazing spamming your content, take an interest in others before you even think about sharing any videos, and def don't spam them, just keep any videos you share relevant to the group you are posting it on.
Networking when you start is a great way to get an audience, watch and subscribe to lots of other similar/local channels to yours/you and comment with sincerity on their content, let them know you enjoy their stuff and they may take a look at your content.
You have to be proactive to grow a channel, it won't happen without your effort.
Also, work on your video titles, descriptions and tags. If you don't fill them in well, then YouTube won't know who to suggest your content to. A good title would include what someone may be searching for on YouTube, like the bike make and model. Don't title them like this: "Vlog 1...." or "S1E04....." etc, if you feel a need to number them, put that at the end, not the start as no one cares what number vlog it is, they just want to know what it is about.
There are plenty of other little tips, I am sure others will pipe in with them, but best thing to do is not worry about the numbers to start with, worry about putting up content people will enjoy. As
@Theodor mentioned, if you want to watch your vlog again after having recorded it, edited it, proof watched it and then uploaded it, then quite possibly others will want to watch it too. If by the time it gets onto YouTube you are sick of that video, you might be better off not sharing it... but not in every case! :-D some folk are way too critical of their own work!
TLDR: Get on Facebook and make a page for your channel. Network with other motovloggers, you'll soon find a close community by doing so. Make content you want to watch over and over!