I am going to buy a Genesis Altitude 30 , but i dont know which size to buy, 19" or 20.5",I am 6 foot tall and I currently ride a stumpjumper FSR which is a large and a Giant Xtc( although just found out its 19") which is a large. I have been out today riding my mates P7, to see if i liked steel and it was a 19" and i've got to say i loved it and it felt alright size wise, he reckons its plenty big enough and he also says your better off with a smaller bike, just wondered what the general consenus is on this

go for the 19". The large in a Stumpy is 19", I ride an Enduro that's the same and am also 6' tall.

That said, I'm looking at the Genesis Altitude 10 myself and am considering the 17.5" so it's nice and compact.

Compare geometry on both sites so you can work out which one will suit you better.

I'm 5ft 10 1/2 and ride a 17.5" Genesis Altitude. I could ride a 19" happily I suspect, but I prefer a slightly more compact bike with a bit more clearance for my nether regions if you get me! There's only about 15mm in the top tube lengths I think so it's not much.

At 6ft, I wouldn't even look at the 20.5", I think it'd be too big for sure…

Thanks for the advice chaps, it looks like it will be the 19"

I'm tempted to get one of these too, the Ti. Does anyone know if they do frame only ?

Kev

I have got the 2010 brochure and you can get the frame only, it is £1099.99

At 6 foot a 19" frame will be perfect. I am 6 foot and have a 19" Altitude 20, I really wouldn't want a smaller or larger frame.

I have a 19" 2009 Altitude 20 that I'm selling.
I'm 6'2" with short legs (and long arms) and it's a little bit too short in the top tube. It's a lovely bike, but I need something a bit bigger.

Message me for more details.

Paul

I'm 6'4 and riding a 20.5 altitude 10
They do have a compact geometry as mentioned above. I find that with my size (35inch inside leg also) the 20.5 is well chuckable but I am considering a layback post to make long rides more comfy.