Try as I might, have been unable to get a pair of GP5000 TLs onto the new DT Swiss ARC dicut 1400 discs. Have tried 2 LBS’s, also no luck. It genuinely seems impossible and I don’t want to be riding a tire I can’t remove…
SO, good people of slowtwitch, does anyone have any experience, personal or anecdotal, of what works with this wheelset? Or maybe experience with what tires tend to come up quite ‘loose’ on other tubeless set ups?
Would appreciate some help here.
I run GP5000 clinchers on DT Swiss ARC Dicut 1400’s. I’ve had varying success on getting them on, but the foolproof way for me has been to use a hair dryer to heat up the tyre/rim a little bit.
I’ve only had a puncture once when out riding, but didn’t have any issues with removing and putting back on, probably because they were warmed up/softened at that point from the riding.
I also run this combo, it is definitely takes a bit of work to get it on. One time I ripped open two blisters on my hands trying to mount them. Apparently soap+water on the rim can help it slide on, but I’ve never had to resort to this. I have also done road-side flat changes, and they are much easier to get on the second time (my only issue was cold hands, but this was in the winter and in the rain).
The good news is that once they are on, I had no issues getting the tires to seat, even without an air compressor.
And on your note of different combos that work, I haven’t ever tried anything else. GP5000s have always been my go-to.
I also run GP5K TL + DT ARC 1400s. My first attempt at getting the tires on took about 6hrs over the course of multiple days. Now that I have figured it out, it’s a 5 minute process, as simple as mounting any other tire.
Mount one side of the bead like normal and get the other side as far as you can before it looks impossible to fit (with around 6†not on the bead).
Spray a little soapy water on the bead/rim, Put one end of the unmounted bead on the ground with a little of your weight on it (to pinch the in-process side from sliding), then work the rest of the bead down with a tire lever while keeping your weight on the wheel.
This will keep the bead from sliding out, so you’re not just chasing it around the rim.
Thanks all. I gave it another go following a mix of this advice and got there in the end!
For others out there, here’s what worked:
#1 - Heat them up. Hairdryer worked a charm
#2 - Soapy water. As above
#3 - Mount it diagonally to begin with (read this on another forum. Was key). If you seat one bead in the ridge by the valve, then at the opposite side of the tire, start working on getting the OTHER bead in. I think something to do with the angles/distances. Once you’ve got it on, you can work your way back up to the valve.
#4 - Tyre lever. Still needed one to get the final bit over. Fair bit of force required as well
Once I had them on, as you say, not too hard to seat it. Managed both with a regular track pump. Though needed sealant without a doubt on the front (25mm) - bit leaky. Back (28mm) was much less troublesome, though went for sealant straight away.
One observation is that you need to make sure that the nut on the valve is tightened as far as possible. Otherwise there is a tendency to leak. Helps to use the adhesive valve guards that DT SWISS supply 
I hope to god that you guys are right about it being easier 2nd time round!