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  1. #1
    Newbie renco92's Avatar
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    Specialized Sirrus Pro 2004-

    I have a bmx bike and the specialized above but i also want to go onto trails without spending more money on a mtb.

    I've have the specialized sirrus pro for about two years and this year I wanted to take it on something other than roads. I've only taken it on a trail once, but I was slipping the entire time. I also feel like the tires are gonna pop/the wheel will bend every time I take it off a curb.

    I heard from my the place I bought it that you can put new wheels and tires on it so that it'll be durable enough to take on trails.

    Any suggestions on which wheels to buy?
    Anyone telling me that it'd be a bad idea to take it on trails?

  2. #2
    Lanky Lass East Hill's Avatar
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    Hello renco92, yes, you should be able to change out wheels. I'm not sufficiently knowledgeable to give you any guidance in that though.

    In the meantime, before others get here to tell you what you can do about the wheels, I'd like to mention that it'd be nice to see a post or two in the BMX forum, and also

    Welcome to BF!

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  3. #3
    Feral Member Nicodemus's Avatar
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    Quote Originally Posted by renco92
    I have a bmx bike and the specialized above but i also want to go onto trails without spending more money on a mtb.

    I've have the specialized sirrus pro for about two years and this year I wanted to take it on something other than roads. I've only taken it on a trail once, but I was slipping the entire time. I also feel like the tires are gonna pop/the wheel will bend every time I take it off a curb.

    I heard from my the place I bought it that you can put new wheels and tires on it so that it'll be durable enough to take on trails.

    Any suggestions on which wheels to buy?
    Anyone telling me that it'd be a bad idea to take it on trails?
    The pro's the fancy one with carbon fork and all that jazz right?

    I find the Sirrus series a very fast, tight, versatile road-oriented bike. From my experience, I wouldn't particularly relish going off-road with it whatever the tires. The drivetrain's also road-oriented.

    But it can certainly be done, and the right wheels and tires will make a lot of difference. I won't say it's a bad idea.

    One thing to check for - the amount of tire clearance available. This might limit the range of tire width and nobbliness. Check at a shop to be sure what it can handle if you're not sure.

    Sorry I can't recommend anything, I'm not knowledgable in that department.
    Quote Originally Posted by KrisPistofferson View Post
    Did you just say "minarchist?" I'm going to start a 10-page vaginathon because only Libertarians can define Libertarianism. Also, you're mean.

  4. #4
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    Assuming you're a relatively normal-sized person and you don't have a thing for catching big air, the Sirrus should do fine on moderate trails. I wouldn't even buy new wheels, at least at first--get some cyclocross or "29er" tires (it has 700c wheels, right, not 26-inch? If it's 26, you can use mountain bike tires) for the existing wheels and see how you like that kind of riding.
    Before you pay for offroad tires, though, check the clearances--not all knobby tires will fit on all bikes. The V brakes give you lots of room, but there may be issues between the fork blades or chainstays.
    I have a Rivendell Atlantis, which is a sort of hybrid--Riv calls it an "all around" design--and I've used it for everything from centuries to fire trails with just a tire or tire/wheel swap.
    If you do decide to get specific wheels for trails, look for something with 36 spokes unless you're pretty light. Over 160 pounds or so, I'd recommend 36 spokes, and ride with some care--don't be crashing over boulders.

  5. #5
    Newbie renco92's Avatar
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    Thanks a lot guys, I think I am gonna go for some cyclocross tires because most are the perfect fit and even the perfect width. I won't be doing any crazy jumps or trails so I think I'll be fine with that.
    Thanks a lot for the quick responses.

    Now the only other question to ask is: Are there any recommendations for cyclocross tires, 700 x 28-32c under 75 dollars?
    Last edited by renco92; 06-04-07 at 01:56 PM.

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