How wide can i go at the rear . . .

[adjustablewench]

Not an apres Christmas diet thread . . . but how wide a tyre can i put on an inbred 29er? i seem to remember i just got away with 2.3.

I have my old frame in my shed and am trying to decide how i want it built up. 29+ would be nice but i think the chainstays wont allow it. . . . if I put a 650b wheel in could i go wider . . . sorry i am not near my shed or i could measure it.

(it's a slow day at work and our system is down, so i am using my time wisely and pondering bikes!)

[Bearbonesnorm]

Inbreds aren't known for having lots of clearance, you might squeeze a 40mm - 50mm 650b rim in there with a 2.8" or you might not. I think Jameso had the dimensions of the WTB Scraper / TrailBlazer 650b+ set up?

Why not leave the back alone and just fit 29+ up front? That's where the real benefit lies

[Mart]

Why not leave the back alone and just fit 29+ up front? That's where the real benefit lies

Thats what I did with my new build, works pretty good with a rigid front fork - the knard tryes are pretty poor show tho, but I will be changing these
I run a Stans Flow rim in the back, what with 2.25 tyres I feel I got a good comprimise between tyre size, mud clearance and ride feel

[FLV]

I have a krampus. you can try my back wheel if you like?

You'd have to fetch the frame to a wed night ride, not this week though, and remind me so I bring the right bike

On a 35mm rim a 3" knard is about 73mm but I think the height will beat you too. It wont fit in a salsa el Mariachi. That one just fits a 2.4 ardent on a 45mm rim.
I'd use a 29+ up front and a 35mm rim 2.4 rear.

[Bearbonesnorm]

a 35mm rim 2.4 rear

I'd be very surprised if that'll fit bit I've never tried it, so you never know.

[ianfitz]

Also depends what drop outs. If they are slotted then you could get a bit more width.

Ps. I'm glad you started your OP with that introduction as it was exactly what I thought when I saw the title

[fatbikephil]

Tried a 2.4 ardent in both a slotted drop out frame and a vertical drop out frame, both on 24mm rims. Its fits but its tight (like 3mm clearance) and soon clogs with mud. A 2.25 is far better.
My Fargo actually has more clearance. Anyone after a large inbred frame?

[johnnystorm]

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[paramart]

on one say you can fit 2.4 but recommend 2.3 max, clogs up quick 2.25 was best