You are better off with rims that "match" the tires; Sheldon Brown had ideas about this and a chart for them. But it's not *necessary.*
With wider rims you'll get slightly wider tires and less sidewall flop at lower pressures; you'll also find that your sidewalls don't flex as much for comfort at a given pressure -- you may want to drop the pressure. I know that 60 mm Big Apples measured 60 mm on 35 mm (outside) rims and 65 mm on 44 mm rims. Elk Passes measure 27 mm on 18 mm rims and 29 mm on 23 mm rims; and so on. When I swapped from 35 mm rims to 44 mm SnoCats, the profile of the tire changed; it was flatter and not as tall. The tire felt harsher at 25 psi and I started to run them 5 or so psi less. OTOH, with skinny rims, if you keep the pressure high enough, you'll be fine. There is a theoretical danger that too wide a tire at too high a pressure on too skinny a rim might blow damaged sidewalls apart, but AFAIK that will happen only with extremes or damaged rim walls. In 1991, it was common to sell 18 or 19 mm rims to hold 2" tires; I know, I used them for thousands of miles and still use these rims for road tires. The rims were bulletproof and the tires flopped in corners if you got much below 30 psi. On Tue, Nov 29, 2016 at 7:24 AM, Paul Clifton <paulgclif...@gmail.com> wrote: > Well, now I'm confused a bit. > > How much wiggle room do rims have on the max tire size, or does it depend > on the rim shape? > > Have any wide tires ever popped off any narrow rims? > > I've been wheel shopping. I want to use mostly 38mm tires. The Open Pro is > 15mm wide on the inside and is rated for up to 28mm tires ( > https://shop.mavic.com/en-us/open-pro-c-j24200.html). Sheldon Brown has a > table that puts 19mm wide rims in my sweet spot: > www.sheldonbrown.com/tire-sizing.html#width > > It's been tricky to find a budget wheelset with both a 19mm or wider rim > and a 130mm rear hub. So far the only reasonable option I've found uses a > Velocity Dyad (http://harriscyclery.net/product/velocity-700c-dyad- > rs400-tiagra-wheel-set-36-spoke-3247.htm). > > But I have a lot more options if a 40mm tire works well on a 15mm wide > rim. So what gives? > > Also, anyone have any wheels for sale with medium-wide rims and 130mm rear > hub? > > On Tuesday, November 29, 2016 at 8:24:28 AM UTC-5, Skenry wrote: >> >> You are good to upsize on those rims, look at a mountainbike someday. >> Tires can easily triple the rim width. >> >> As for tire, I actually recommend these from Pmart >> http://www.performancebike.com/webapp/wcs/stores/servlet/Pro >> duct_10052_10551_1168230_-1_400904__400904 >> >> Cheap as all get out, not too heavy and they perform really well. They >> are my go-to tire for non racing cross bikes anymore. Did I mention cheap? >> Scott >> >> >> On Tue, Nov 29, 2016 at 7:05 AM, 'Mark Etze' via RBW Owners Bunch < >> rbw-owne...@googlegroups.com> wrote: >> >>> I have that exact set up, Mavic Open Pro's with 40mm Clement MSO's. I >>> run them at 60psi and they have been great with out any squirliness at all >>> and no flats with 1500 miles on them. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "RBW Owners Bunch" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to rbw-owners-bun...@googlegroups.com. >>> To post to this group, send email to rbw-owne...@googlegroups.com. >>> Visit this group at https://groups.google.com/group/rbw-owners-bunch. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rbw-owners-bunch+unsubscr...@googlegroups.com. > To post to this group, send email to rbw-owners-bunch@googlegroups.com. > Visit this group at https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten ************************************************************************** ************** *The point which is the pivot of the norm is the motionless center of a circumference on the contours of which all conditions, distinctions, and individualities revolve. *Chuang Tzu *Stat crux dum volvitur orbis.* *(The cross stands motionless while the world revolves.) *Carthusian motto *It is *we *who change; *He* remains the same.* Eckhart *Kinei hos eromenon.* (*It moves [all things] as the beloved.) *Aristotle -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. 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