The 2.5" DHR2 has been around the race pits for years as a pro-only tire, so it's exciting to see it finally released to mere mortals like us. The 2.4 DHR is a noticeably smaller casing than any of Maxxis 2.5 tires, which makes it kind of a weird match when you're running one of each. I'm running a 2.5 Assegai up front and a 2.4" DHR2 in the back, so I'd totally buy a 2.5" DHR2 when mine wears out. Of course it doesn't matter much, it's 0.1", but I'm a fanboy and I'd rather have the bigger volume...