I doubt you will have any problem with rubbing or turning radius. If you check out cardomain.com and pull up 2008 toyota sequoia there are 2 members on there, one with 26" and one with 24" wheels. Both are stock height and they both look good. As far as the ride, never had 24's on my sequoia but I had 305/35/24 on my yukon and I didnt notice much of a difference from the stock 17's

. And the sequoia suspension feels better than my yukon did so I'm willing to bet you will be very happy with 24's.