Spare inner tubes

Hi all,
Really stupid question, where do I find the details for the correct replacement inner tube that I should be buying? I looked on the tyre, the details seem to relate to the tyre itself?
I have a specialized secteur elite 2012.
Thanks
Really stupid question, where do I find the details for the correct replacement inner tube that I should be buying? I looked on the tyre, the details seem to relate to the tyre itself?
I have a specialized secteur elite 2012.
Thanks
0
Posts
However you'll need a presta 700c x 25 inner tube.
Carbon 456
456 lefty
Pompino
White Inbred
http://www.evanscycles.com/products/spe ... e-ec001873
It's not on the wheel; it's on the tyre. Go round both sides of the tyre, reading everything that's moulded in. Anything there that looks like 700/25 or something (or maybe 622 x 25)? As you're looking at Spesh tubes, you almost certainly need the 700x20/28 size -- that means it's a 700mm diameter (not really, but let's pretend -- you don't want to know the truth) and it will fit tyres from 20mm wide to 28mm wide. Ish.