[Closed] So, wider rims then

[play your cards right audience]Higher![/play your cards right audience]

same or higher pressure on wider rims = more force so less rim dings.

much lower pressure on wider rims = less force so more rim dings.

Eh?

More volume should mean you can run lower pressures for the same reaction to impacts basically. But I don't know if it's a big enough change in chamber to really matter much. I can't tell, I used literally the tyres on a 17mm and a 30mm rim and I could feel a wee bit difference in shape but nothing in volume. I'm sure there's a difference, but it's down in "can't tell, don't care"

With a big coarse change- bigger tyre- then I don't think there's any debate about it. Like, with a 4.0 to 4.8 I dropped from 9psi to 6psi for much the same effect, but then the air chamber is probably not far off 50% bigger.

Seems to me that the rim might be better shielded from impacts on the left or right of the tyre chamber if you had narrower rims, rather than wider. Just wondering if there's any real-world anecdotal evidence either way.

Yah, makes sense but I don't think those side hits are what really hurts rims. Scratches, sure, but not outright damage. (tyres, though- wider rims balloon out the tyre more and make sidewalls more exposed. Don't think it's ever made much difference to me though.

I have 35mm internals, and 15psi feels like about 25psi on my 23mm internal rims. So for the same pressure you'd be less likely to ding.

How wide are you talking molgrips?

I have holed 3 tyres at the rim interface running 30mm internal rims, tubeless. They would not reseal due to location. I never had a rim puncture on narrower rims. Make of it what you will. For what it is worth I have plugged the holes with rubber-stringy stuff and they have not gone down since so not the end of the world.