Biggest I know of currently is the 2.35 Big Apple, which is not knobbly.
I heard that one of the tyre companies was developing a 2.35 knobbly,
but can't remember who - I read about it on a bike / 29er news site
somewhere I think.
If you've got a KH frame you should watch out for clearance though:
older KH 29er frames apparently don't have sufficient clearance for a
2.35 BA.
I rode with a BA for some time. I found it OK when I tried it offroad,
but you probably wouldn't want to ride it in muddy conditions due to it
being fairly slick. On road it was quite a smooth fast ride, but took
some getting used to - particularly in terms of controlling its
reaction to road crown. Once I was used to it, I liked it. (side
note: I now have a 36er, so I've put a Kenda Klaw XT Rear on the Nimbus
29er - same tyre as the KH29XC).
--
mark williamson
Dave: Just a question. What use is a unicyle with no seat? And no
pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!
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