I tend to trust matrices published by WTB and Rene Herse because there's
evidence they really put some thought into it and in all likelihood have
written notes on things they've tried if not formally tested. Whereas other
sources will just have a sentence or two and it feels like a lawyer's take
Jan Heine's take on the topic. I trust his opinions on tires, hard to argue
that many people in the world have spent more time studying and
experimenting with tires.
https://www.renehersecycles.com/myth-18-wide-tires-need-wide-rims/
On Wednesday, December 11, 2024 at 12:18:29 PM UTC-8 robtw...
Ha, was in my LBS on Monday picking up my bike and talking about building
up some 650b wheels. We were chatting about rim width with respect to tire
width and the only callout my pro made was that a wider rim will "flatten"
the tire profile. I mentioned that maybe really wide tires would look silly
+1. Back in my day I rode 50 mm tires aggressively offroad on ~13 mm IW
rims for years with no problem, and recently rode 72 mm actual tires on ~18
mm IW rims, tubeless tires on non-tubeless rims, just with lotsa tape,
again with no problems.
You do have to keep the pressure up, tho’ I rode the 72
How does the calculus change for tubular tires/rims?
On Thursday, November 28, 2024 at 6:29:33 PM UTC-5 Stephen Durfee wrote:
> Wish this thread had been started yesterday, as I tried fitting a 2.1"
> Billy Bonkers onto an old Mavic 217 rim (17mm), got scared from the
> lightbulb profile, then
That's a good question. I only know about old tubular rims, which are all
fairly narrow; 20mm sidewall-to-sidewall on a 1960s Fiamme Red Label I just
checked is typical. But even on wider profile types like the old Dugast
32-33mm cyclocross tires I have around or the 36mm Challenge Strada Bianca
Wish this thread had been started yesterday, as I tried fitting a 2.1"
Billy Bonkers onto an old Mavic 217 rim (17mm), got scared from the
lightbulb profile, then called Rich to order up a new wheel...but now I'll
finally have a proper matched rear to go with the front dynamo wheel that
he buil
Exactly. With appropriately wide rims you can play relatively fast and
loose with tire pressure, but with really fat tires on
not-quite-wide-enough rims you do have to be more careful about pressure.
Still …. 72 mm actual on ~19 mm IW rims at 12 psi (tubeless) …
Happy Thanksgiving, everyone. I go
I emailed Jan Heine once about RTP's on mavic 717 which have a narrow inner
width - I think 17mm. He said it was fine. I ran them for a long time and
was indeed fine. I did notice that when the tires tended to squirm at lower
pressure vs SBH's on velocity blunt SL's (19mm) but those were also
t
Sorry, that should be: 72 mm actual width WTB Rangers tubeless on ~ 19 mm
IW rims.
On Thu, Nov 28, 2024 at 1:13 PM Patrick Moore wrote:
> +1 for almost any tire on any rim, and I can beat Will by 4 mm: 72 mm
> actual WTB Rangers tubeless on 21 mm IW OEM Alex rims on that Monocog —
> non-tubeless
+1 for almost any tire on any rim, and I can beat Will by 4 mm: 72 mm
actual WTB Rangers tubeless on 21 mm IW OEM Alex rims on that Monocog —
non-tubeless but even at 12 psi no problems. (Perhaps no problems *because* 12
psi.)
Back in the day Sun and other major mfrs made 13 mm IW 26” “semi-aero”
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