Prime Tire Newsletter | This is The Athletic’s F1 newsletter. Sign up here to receive Prime Tire directly in your inbox twice a week during the season and weekly in the offseason.Welcome back to Prime Tire, where today there’s only one place to start.RIP, Kyle Busch.A NASCAR and motorsport legend, shockingly gone at 41 after a short battle with an illness.I’m Alex, and Patrick Iversen and Luke Smith will be along later.Memories Matter: Norris collabs with dementia charity If you’ve opened this newsletter hoping for some escapism and levity, don’t worry — Pat has that covered later.But first, let’s stay serious for a moment. There’s an important message Lando Norris will be carrying on his head all this weekend at Formula 1’s 2026 Canadian Grand Prix. The world champion is collaborating with Jackie Stewart’s charity, Race Against Dementia, and sporting a helmet design with the aim of highlighting dementia research.Stewart, the former F1 driver and three-time world champion, established the charity in 2016, following his wife Helen’s diagnosis with frontotemporal dementia.Norris’ helmet for Montreal features a brain scan visualization showing the impact dementia has on the organ’s synapses. One side is colorful — “full of memories,” as Norris put in this lovely video explainer — and the other is faded — representing memory damage that dementia brings about.“That’s not a nice way to live,” Norris added. “Because everything in life is about memories.”I thought this was all worth highlighting for two reasons:One, Norris is right. On the day we look back on the career of Kyle Busch (below, from his last win just a week ago), with Jeff Gluck encapsulating it perfectly here, it’s important to reflect and take in what matters.And the Norris story sparked a personal memory I’ll always cherish: I met both Jackie and Helen at their home near Geneva, Switzerland, back in 2017. That alone was a privilege. But to see their love, care and devotion to one another was another entirely.The second reason is that I remembered how, among certain sections of F1’s wide fan base, drivers regularly changing their helmet liveries is not popular. It became such a thing that in 2015 the drivers were even banned from making regular changes (the ban was rescinded by the FIA in 2020).