Stan's yellow tape will make a noticeable difference, but may need care to avoid interfering :no: with the bead grooves. Pretty slick stuff.

I've broken multiple park tools tire levers trying to get the last 4 inches of new GP4000s onto HED Belgium rims. That will wake everyone in the room up. No experience with DT Swiss rims though. My Neuvation rims aren't as hard to mount on though, IIRC.

Maybe next time I will get new rubber I'll try the dryer if I have issues....I think the secret there is to not ask the wife's permission first!

I've never had this tough of a time. Grab a Schwalbe Marathon and practice with that. If you can mount a Marathon bare handed you'll wonder how in the world you ever struggled with anything else.

Use the edge of your palm where the fingers meet, basically where you get the calluses on your hand, to roll the bead up over the edge of the rim.

No kidding, with enough practice I swear I can mount just about any rim/tire combo that was intended to go together (no, I cannot mount a 650 tire on a 700 rim).

I saw a riding partner palm the last inches of a 4000s bead onto my Neutron. Might have been able to do it when I was working, but not now. :)

So what are the chances that a DT Swiss rim was really made too big? Make that two rims.

I've tried nearly all of the advice on this thread. Zipp rim strips, Lezyne levers, soapy water, baby powder. NOT EVEN CLOSE. Still a good 3-4 inches that isn't going on. And just to be sure, I pulled out another tire, and it's exactly the same. Just not going to go on. And this is in the comfort of my basement, with whatever tools I need at my disposal. I wouldn't even think of taking them out on a ride.:help:

It takes two to tango. Is the tire the correct size for that rim?

(I didn't bother to see if that was mentioned above.)

650b.......:confused:

gp4000s

I do...It's called Canada! :fight:

Yes, it is.

Trusting that you know how to put tires on...yep, DT rims can be challenging but I haven't seen any that were not possible..build hundred 465/415 plus or minus.

I'd say warranty them.

BTW-I sell more Conti GP and such than any other tire and yes, you can put them onto a DT 415/465 rim, w/o tools, just palming it on. Tough but possible..for the below post.

Loose the GP4000 and get some vredesteins or Schwalbes.

I roll Conti tyres on DT rims using only my thumbs, all day. Man up.

Just to offer some moral support here: the same thing happened to me. I got a set of wheels built up with the 465s and for the life of me couldn't mount tires on them. I tried 3 or 4 different brands of tire (both new and used) and could not mount a tire without extreme exertion over a long period of time, to an extent that I wasn't comfortable with the idea of changing the wheel if I had gotten a flat.

The strangest part is that I had previously had another set of wheels with 465 rims and had no trouble mounting tires at all. I wonder if they slightly changed the dimensions of the rim in the past year or so. I know this doesn't offer any help, but at least you know you're not alone.

I have some old sharader valve 700 C wheels left over from the 80's with rims that seem a little more forgiving.....and it doesn't matter if I scratch them up with tire levers, ec. Can get cheap tubes at Walmart if necessary. I use them to stretch new tires. Helps me with problems you guys are describing.