Cyclocross - Tire width on Open Pros

I just used the old calipers to take a quick look at the actual width of tires mounted on rims; on the Open Pro I measured a Michelin Jet at 32mm and a Maxxis Raze at 31mm, on the CXP22 my WTB crosswolfs were 31mm.

I'm looking for a bit of a fatter tire for some rooty/rocky trails and looking for a "true" 35. Anyone have any actual tire widths measured and memorized?

Not measured or memorized, but Hutchisons (Bulldogs and Pirannahs) are significantly wider than Michelins and WTBs

Have you considered the Continental Cyclocross (http://www.biketiresdirect.com/product/continental-cyclocross-tire)? I haven't tried it, but the nominal size is 700x42. Given my past experience with Conti, I'd expect it to be closer to 38 on most rims, but you never know. If you've got lots of clearance, it might be worth a try.

I have tons of clearance up front and I'd thought of that Conti or the 700x40 Ritchey cross.

Schwalbes are almost always true to size.

I really like my Hutchisons (Bulldogs and Pirannahs) The tires have a taller stance as well. I have the Perannahs mounted on my open pros now.

I have Specialized El Capitans (labeled as 34mm) on my OP wheels. I'll try to measure them tonight and let you know what I get. If they're like their road tires, they'll be wider than labeled....

Sorry to hijack this thread. What are the widths on open pros? What is the max tire width you can go on this?

Sorry to hijack this thread. What are the widths on open pros? What is the max tire width you can go on this?

The outside width of an Open Pro is about 20 mm. Mavic lists the ERTO size as 622x15, which sounds about right for the inside width. They also say the max tire width is 28, but you can definitely ignore that. I've run 35's on a rim that is 2 mm narrower than the Open Pro. You can definitely use 35's on Open Pros, probably 38's.

Thanks Andy_K that is exactly the answer I was looking for! Onward to a plusher ride.. 35s it is.

(bump)

Exactly the info I was looking for too! Now I am not afraid to go with open pros for a new wheelset, with the intention of running 35 on a Surly Crosscheck for commuting.

Anything that passes the UCI tire width Max is fine. there are Go/No-go gages for ruling on that .

Anything that passes the UCI tire width Max is fine.

Especially for commuting. ;)

Schwalbe has a good selection of much wider than UCI width cross tires. and that conti one is also pretty fat.

I run 35c tires on Open Pros on and off road without any concerns and have pushed them pretty hard too.

I just put some Continental CountryRide on my Open Sports (not Pros, but I think they're only about 1mm wider), and although they claim to be sized 622-37, when inflated I'm measuring a max width of 33mm. They look badass on my crosscheck, not at all balloony.

I have run Kenda Kwik 35s on my OpenPros with no problems. Don't have a caliper to measure, but they are much wider than the 32m Happy Mediums I usually run for our dry racing conditions in LA. The Kwiks were a little slow on grass, but are great for commuting.