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tire clearance on an old Sirrus

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tire clearance on an old Sirrus

Old 12-18-11, 11:42 AM
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tire clearance on an old Sirrus

Hi Gents,

I'm thinking of picking up an older Specialized Sirrus on CL (minneapolis). It's in my size, a bit pricey for me, as i'm a cheapskate.

It's a 90's model, but i'm not sure what year. It has the lugged frame, but not a lugged fork. Ad says 21inch frame, which would make it a 52-53cm frame. That seems small for the picture, i'd put it at a 55 or 56cm. of course that's assuming the guy took a picture of the exact bike and didn't just post someone else's picture

http://minneapolis.craigslist.org/da...652659382.html

I'm hoping it's one of the latter 2 sizes, 55.5 would be perfect for me.

I'm looking to use it as a gravel commuter as I live in a small town, and work out in the country at a ag research site.

Therefore I want to put 700c knobbies on it. Does anyone know what tire clearance these things had? I currently ride an old giant perigee, and the widest tire I can get on them is about a 28; which gets frustrating at times when the roads are soft and freshly graded (loose gravel). I'd like to go to 32 or 35 if possible.

I'm also considering converting it to 650B. Brakes aren't an issue as I ride em fixie.

Thanks in advance!
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Old 12-18-11, 12:22 PM
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I think i finally found it. Looks like someone has fit 32s on, and thinks 35s will fit too. So I should be good to go.
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Old 12-18-11, 01:01 PM
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Originally Posted by orange leader View Post
Hi Gents,

I'm thinking of picking up an older Specialized Sirrus on CL (minneapolis). It's in my size, a bit pricey for me, as i'm a cheapskate.

It's a 90's model, but i'm not sure what year. It has the lugged frame, but not a lugged fork. Ad says 21inch frame, which would make it a 52-53cm frame. That seems small for the picture, i'd put it at a 55 or 56cm. of course that's assuming the guy took a picture of the exact bike and didn't just post someone else's picture

http://minneapolis.craigslist.org/da...652659382.html

I'm hoping it's one of the latter 2 sizes, 55.5 would be perfect for me.

I'm looking to use it as a gravel commuter as I live in a small town, and work out in the country at a ag research site.

Therefore I want to put 700c knobbies on it. Does anyone know what tire clearance these things had? I currently ride an old giant perigee, and the widest tire I can get on them is about a 28; which gets frustrating at times when the roads are soft and freshly graded (loose gravel). I'd like to go to 32 or 35 if possible.



I'm also considering converting it to 650B. Brakes aren't an issue as I ride em fixie.

Thanks in advance!
Just don't neuter it when you take it fixie. Remember they aren't building Sirruses that way anymore.
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Old 12-18-11, 02:15 PM
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I have that exact frame in 56cm that I will be selling when I get up the ambition to post it.

That said, I had a beast of a time getting 23c tires on and off the rear. The cross brace on the chain stays is too far to the rear and I almost had to deflate the tires to get the wheel on.

YMMV
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Old 12-18-11, 02:56 PM
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I had a 1990 sirrus and 28 was cutting it pretty close.
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Old 12-19-11, 05:00 AM
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tire clearance

I had an old sirrus bought new back then. Looked great but more for crits, with 700x25 specialized tires the maximum and other brands only 700x23 due to rear brake bridge clearance. Forks were pretty stiff too. Handled great, but a rigid ride and not the best for a 240 pound guy on rough city streets. Did learn to bunny hop to save the wheels, but eventually sold it to a lighter, less aggressive rider and picked up something that would take 700x28s.
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Old 12-19-11, 09:37 AM
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This looks like a 92 Sirrus. And the size is more 56-57cm. The earlier Sirrus bikes were road racing frames, lucky if you can get a 28mm on there. I think the later models loosened up a bit, and even had eyelets at the dropouts.
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Old 12-19-11, 12:07 PM
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Originally Posted by WNG View Post
This looks like a 92 Sirrus. And the size is more 56-57cm. The earlier Sirrus bikes were road racing frames, lucky if you can get a 28mm on there. I think the later models loosened up a bit, and even had eyelets at the dropouts.
Mine had eyelets AND very little clearance. I never quite understood this combo...
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Old 12-21-11, 03:03 PM
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You guys aren't kidding about lack of tire clearance on the brake bridge. Here's my recently acquired 1989
with a 23 tire

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