Tube question/valve stem

[alehman]

Hi guys,

I'm about to buy some tires but I want to get tubes with them at the same time. Coker's website offers tubes with centered valve stems that come in a few different sizes (TR-4, TR-13, etc.). what should I be going for in terms of valve stem size for these wheels?

[shinyribs]

Hey bud, aren't you running comstars?  My comstars are marked as tubeless. You might not need tubes.

[Lucky 1]

Ask Coker or the manufacturer. They make up those numbers.

[alehman]

Yeah, I'll call coker today. Shiny, I ended up sticking with spokes... turns out my 79L comstars have a 17" rear, and they don't make the tires I want in that size. Also, I'd like a larger rear wheel. I figure it's something I can get down the road.