I've used both tires albeit on differently sized rims (XR 26x50 & Big Apple 700x60)
The Big Apple works well at a variety of pressures, though at the high end, you lose the benefits of fat tire "suspension." I really like the XR's for snow riding and dirt roads. I use these on my Surly Big Dummy and they are great for toting the 100+ pound loads I sometimes carry in town. I run these on wide Salsa Gordo rims. I recently discovered how low is too low in terms of tire pressure for these tires. I was running about 20 psi or so in the front and I discovered that on sharp turns at speed the tire would suddenly "collapse" onto the sidewall. It was a little alarming when it happened on a fast downhill. I now completely understand the RBW bias towards round tires! At 40 psi and above, they work great. In my opinion, XR's are complete overkill for anything except nasty roads, no roads and very heavy loads. I used them road touring one year and my Atlantis felt like a truck. However . . . Marathon Supremes in 50mm are great. They are lighter than Big Apples and roll really well. I've been running these on my Bombadil on road rides up to 54miles and will use them on an upcoming 3000 mile tour. They are very nice. Dave On May 15, 10:40 am, JoelMatthews <joelmatth...@mac.com> wrote: > Peter White in a thread on his forum recently opined Schwalbe's higher > recommended psi is too high by 10. He did not say anything about > underinflation that I am aware of. > > Like you, I would be concerned about going as low as 30 on a smaller > rim. > > On May 15, 12:00 pm, Jim Thill - Hiawatha Cyclery > > > > <thill....@gmail.com> wrote: > > I'd go by what's printed on the tire. I always rode mine at approx > > 40-55 psi on Velocity Dyad rims, and I'm pretty sure I experimented as > > low as 20-30 psi with no obvious problems. I think 70 is too much for > > my tastes, rides rough, etc. I'd also shy away from going down to 30 > > on narrower rims. But, please don't listen to me. Get the tires and > > experiment to figure out what works for you. > > > Jim > > > On May 15, 10:31 am, Garth <garth...@gmail.com> wrote: > > > > Thanks for the replies. > > > > Jim.... I could use some clarification. The XR's lowest pressure > > > rating is different from the Schwalbe North America and the Schwalbe > > > Global sites. What is the lowest pressure for the 700x50's? The North > > > America site says 45-70, the Global says 30-70 , which would be the > > > same as the Big Apples. Can they both be run at 30 psi?- Hide quoted text > > > - > > > - Show quoted text -- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
