Implement the ability for an athlete to see their personal records for each individual bike in their profile. I have a lightweight road bike and a heavier gravel bike. I am never going to be able to beat a PR up a steep climb that I have set on my road bike when riding on my heavier gravel bike but that doesn't mean a particular effort on my gravel bike is less of an achievement than on my road bike. It would be good to see separate PRs for each bike in your profile.