Hard to tell from the picture. Do you have calipers? How much width is there at the chainstays and between the forks with your current tires?
On Friday, March 14, 2025 at 7:54:56 PM UTC-7 [email protected] wrote: > Hello, I've been trying to figure out if my 2011 Homer could fit these > 42mm Ultradynamico Cava (race/grey casing) tires but I feel that it's hard > to know without just ordering them. The issue is that once I mount them, I > can't return them. > > From old Rivendell articles, it seems that the max the Homer could fit > back then was around 40 mm without fenders. After emailing Ultradynamico, > Ron told me that his Roadini (with a rim that has 19 mm inner width - which > is the same as my current rims) had 42s and they measured "a hair below > 40". > > What do you guys think? A part of me wants to be safe and go for the 39mm, > but on their site it seems like they run small on narrower rims. I've > attached a picture of my Homer! > > " The sizing is sorta funny, it is badged a 700c x 39, but on most modern > rims it's been measuring a little smaller upon initial mounting, more like > a 37-38mm then after some use these stretch out to almost a 39mm width. On > more traditional, narrower rims they will measure smaller... closer to > 37mm." - From UD's site. > > -- 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 [email protected]. To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/41992e23-76f0-4547-8c25-a09f3f652893n%40googlegroups.com.
