How the !$#%%^&% do you get those things on the wheel?
Figured I’d try 'em out and see how they feel on the Zipp 404’s, but I CANNOT get those things onto the rims. The video on Tufo’s website shows how “easy” it is… so apparently, I’m a moron. Any suggestions? God help me if I ever had to change one in a race… maybe I should just go back to the tubes.
A couple of tactics:
-My buddy at the bike shop uses zip ties to incrementally secure the tire on the rim.
-I set my oven to 170deg F and baked my tires for no more than 5 minutes. It worked great but the next time I do that I’ll wear some glove to protect my hands(from the heat).
Of course these techniques will probably not eliminate all of your problems, so I suggest that you do this while the kids and/or your SO are far away 
If you’re worrying about flats I’d recommend you put some kind of sealant (TUFO sells their own brand) into the tire to prevent punctures. However, if you’re paranoid about getting your tires slashed you can: 1) Carry a folding tire with a tube, or 2) buy an extra tufo and mount it on a rim for a while so it can stretch (it does stretch…like a tubie) and then take it with you.
I gave up trying to put them on following Tufo’s directions - valve stem at the top… Found them much easier to put them on with valve stem at the bottom…
Yeah… I bought the sealant. I’ve only had one problem with a flat in a race… and that, of course, was using tubes… and not on the Zipps. I was just noticing out loud that as difficult as it seems to be to get those things on the rims, my day would be over before I got 'em changed out in a race.
Oh my god I feel your pain, this was me over the weekend. Your thumbs will hate you. I had to have my wife help me by holding one side.
Dave in VA
I tried them. Gave up after stretching, and even leaving them stretched in my 120 degree greenhouse. Sent them back and started use my grip strengthener to be ready for the next challenge
First, you need to stretch the tires a bit. I usually leave them in the sun for 30 mins and then hold the tire down with one foot whilst pulling up on the other end of the tire. This is also a great way to injure you’re back! 
After that, follow the Tufo instructions to a tee. Pay special attention to pulling on the tire as you work your way around the rim and do not let the tension release. As you get to the bottom, try rolling the tire as you stretch it over that last painful portion of the rim - it gives you a bit more leverage and you can always roll it back over on to it’s “belly” once it’s on the rim. Don’t worry about seating the tire until it’s around the rim.
The first few times you do it, it’s a big huge pain the arse (not to mention your thumbs), but once you learn the “technique” subsequent tire changes - infrequent though they may be - will be easier and faster. If you’re going to carry a spare tire around, make sure you’ve stretched it on to a rim, filled it with air, and let it sit for a while. Better yet, ride the spare around for a few days and it’ll stay stretched enough for a quick change.
Really, once you know how to do it, tire changes can be completed in a minute or two.
Thanks. I’ll give that a try this weekend.
Not sure if this made any difference, but before I installed mine, I first inflated them to nearly 180 psi and left them hanging like that in the garage for a couple days. It was late summer so the daytime temps inside the closed garage probably exceeded 120 degrees (F) which may have resulted in some stretching of the tires. Consequently really did not have much problem getting them installed although I sort of cheated in the technique department. When I mounted them, I deflated them down to about 10-20 psi and then starting at the valve stem, resting the rim between my feet, with the valve stem in the air, I worked towards my feet as directed in the printed pictograph instructions. Once I got half of the tires inner bead over the edge of the entire rim, I again ensured that the valve stem was still straight and then proceeded to seat the clincher bead properly all the way around the rim - I think it took about 10-minutes per wheel to get them installed on my American Classic CR-350’s. Truth be told, should you get a puncture that the sealant wont solve, in my experience, the tire comes off a whole lot easier than it goes on!
Steve, please don’t ever try to mount a new one as a race spare during a race. It will be dark and the transition area empty before you finish. Preferably, mount one during the off-season and ride it a bit, then take it off and keep it as a spare for race-day for your mid to long-distance races. If you flat during a sprint, you can either rely on the sealant or if not just ride it back to transition. Even if it’s flat, it won’t come off until you want it to. Once it is pre-stretched, it is very easy to remount.
It gets easier each time you do it, but you might want to bandage your thumbs before you try mounting 2 new tires on the same day. The thumb blisters will not be pleasant, believe me.
2 tips.
inflate tire at high psi and leave it for about a week to stretch it out.
Use your knees. Sounds weird, but while working tire up around rim, use knees to secure tire and rim while moving hands to regrip tire so as not to let tire “snap back” (Hope this makes sense, but it worked for me).