I might be mistaken, but I believe the newer ones are tubeless spoked. Last week I rented a Street Glide one day, and a Road King another. I preferred the RK, as I found the SG a bit harsh with the shorter shocks, and the buffeting beat me up pretty good. I also like the idea of being able to easily remove the windscreen, whereas on the SG the fairing is always there. I found on the SG that I could barely hear the radio when moving at freeway speeds - iPod and earbuds work fine for me.