Originally Posted by
Kapusta
Sheldon's note at the bottom about many people exceeding those recommendations is quite the understatement. Before rim widths caught up, mountain bikers were blowing the doors off those recs with no issues. Heck, at one point I was using 2.3s with 17mm (ID) rims. That's like 6 boxes into the red on that chart. Heck, I'm STILL two boxes into the red on my MTB and my old Salsa Casseroll that my wife now rides. Zero issues in 23 years. None. Nada. Zip. Would wider rims be better? Sure, for handling. But there is nothing unsafe about it.
Here are the specs on my daughters touring rim:
"The Mavic XM 117 rim brake rim is wide enough to allow the use of a large volume tire, but reasonably light for epic mountain bike rides. 6160 Alloy, non-eyeleted tube-type rim. Black with machined UB Control braking surface. Valve hole diameter: 8.5 mm, supplied with valve adapter. br>
Weight:
440 grams
Size:
26-inch
Internal/External Dimension:
17/22mm
ETRTO recommended tire sizes:
1.1" to 2.3"
Rim Depth: 17mm
Drilling:
32 or 36 hole
Rim Brake"
This is essentially the same setup you were using
That is one heck of a range.