Oh, I agree, the 35 batteries seem to work just fine. I also see more of them on shelves than 24F and the prices are often a bit lower, so I presume this comes from volume buying/selling.In all honesty, how much much juice do you need to crank over a 2.4L 4-cyl engine running 20/30wt oils? Obviously some reserve would be nice and a 35 seems like a reasonable balance.
My personal example is my G35 - it came with a 24F battery (and still has a 24F). Later years (technically, G37) switched to a 35. If I do a battery look-up for the battery for my car today, most selectors show it uses a 35. I want to say our son's V6 Accord used a 24F battery as well but a lot of selectors say 35.