I can't wait to try some of these bad boys. I'm not in love with 29+, but these look perfect for is mid size folks.
The reason it is a 2.8 instead of a 3.0 or 3.25 is because at the slightly lesser volume it improves its chances of fitting in to existing 29" frames without modification allowing for a chance to experience + style volume for just the cost of a set of wheels and tires, which arguably is plenty these days.Since they are 4 mm shorter in overall wheel height than a 29 x 2.2" tire you could have an "almost" mid-fat bike if they fit. I went right out to the garage and measured.
I've got about 77mm of space at the seat stays... so depending on height of actual tire they would just fit on my 29er..... with 650B wheels of course.
That is one frame that I'm looking at. Let us know if you try it out.I was thinking of making my SC Tallboy into a 27.5+. Looks like I have enough room. Lots of Sandy trails on Cape Cod. It would be a low fat bike vs my ML'r.
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Yeah I think the idea is solid, but if people read the above review the tester can't fit the B+ rim on the appropriate 45mm WTB rims in the rear triangles of all the fs bikes he tried.