29+ wheels on a 27.5+ Frame

[adbl]

Quick question. Has anyone tried 29+ wheels/tires on a frame designed for 27.5+? I'm looking at a frame that is a 27.5+ design with 430mm chainstays and looks to have plenty of room around the 27.5 x 3.0 tire. Other than raising the bottom bracket (which I would like) seems like it would fit. I'd like to use a 29 x 3.0 but would settle for a 29 x 2.8 if I had to. Any one tried it?

[Ray Zorbak]

It would be impossible to do so.  Neither the frame nor a fork made for 27.5+ wheels would be able to accommodate a 29” wheel. A 29er frame would be able to take wheels for 29”, 27.5”, and 26” but not the other way around

[northup]

I took a leap of faith and put 29x50mm rims on a Salsa Timberjack, ran the adjustable dropouts all the way out, and slapped some WTB Ranger 29x3.0s on it. It works, it's not perfect, but I use it for riding flat-ish XC in snow. Sometimes the only way to find out is to try it.