Last week I converted my MTB to tubeless, and on my first long mountain ride I could feel a certain squishy suspension effect that I hadn't noticed before. I ride a hard tail, and previously my tires (The Captain by Specialized, 2bliss ready) used thorn-resistant tires that are really thick, stiff, and heavy (the two tubes I removed combined for 3 lbs, no crap). I believe that the lower pressure (40 psi rather than 45-50 that I used with the tubes) and the lack of a really thick, heavy tube reinforcing the tire's sidewall, combined to give me this more forgiving, suspension-like feel.
Which got me thinking seriously about going tubeless with my road bike again. I built a new wheelset several weeks ago, and used the Pacenti SL-23 rim, which is tubeless ready. I purposely used Stan's No Tubes yellow tape on these wheels so that all I lacked were tubeless tires and valve stems whenever I finally decided to take the plunge.
Well, I just took the plunge. I ordered the Hutchinson 28mm Secteur tubeless to be used on my rear wheel. I had switched from Gatorskins both fore and aft to Conti GP4ks, but recently put the Gatorskin back on the rear wheel after a couple of flats with the GP4ks. The GP4ks on the front I kept.
So, later this week, or early next week, I'm going to find out what a 28mm tubeless tire at its lower pressure (90-100 psi from what I read) feels like compared to a 25mm Gatorskin (kinda stiff feeling compared to the GP4ks) at 120psi.
I'm hoping it feels like a freaking Cadillac. We'll see if the reality measures up to the expectation.
I only ordered one, because I want to see how big it is after inflation on the SL-23 rim. The rear wheel has much more clearance on my frame than the front wheel has with the fork. On the other hand, the 25mm GP4Ks expands to nearly 28mm on the wide SL-23 rims, so it's possible the 28mm tubeless won't be much bigger, if at all, than the 25mm Conti. Again we'll see. I think I'll get a fair feeling how the tubeless is going to affect the comfort of my ride even just having one in my rear wheel, since it's the one that seems to absorb the most shock, and I run the front with the GP4Ks at a pressure much closer to what the tubeless will use.
I'm curious if any of you other big guys, in trying to make your steeds more comfortable, have gone tubeless specifically for comfort, and whether that worked out for you.