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  1. #1
    Spinning @ 33 RPM Glynis27's Avatar
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    Recumbant vs DF Tires

    Hello all. I have been using 26x1.5" Primo Comets on my DF bike for 2 years. I have been quite happy with them, but they will need to be replaced next spring. While looking for replacements, I have found that they are marketed as recumbent tires. Why is this? Is there any difference between a recumbent and DF bike tire? Any reason they should not be used on a DF bike?
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  2. #2
    Bent builder purplepeople's Avatar
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    Go ahead and use them. Recumbent bike tires tend to be more aerodynamic and more comfortable than regular bike tires.

    ;)ensen.
    Those who claim to be making history are usually just repeating it.

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  3. #3
    rebmeM roineS JanMM's Avatar
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    Primo Comets are bicycle tires. They should work equally well on a 'bent or an upright bike. I suspect they are on a lot of 'bents because of Primo's connection to BMX bikes. Most BMX bikes use 20"/406 tires, as do lots of 'bents.

    I'm considering putting them on our upright 26" wheeled tandem when the current tires wear out.
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  4. #4
    rebmeM roineS JanMM's Avatar
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    Quote Originally Posted by purplepeople View Post
    Recumbent bike tires tend to be more aerodynamic and more comfortable than regular bike tires.
    ensen.
    Does the recumbent position of the rider somehow make the tire aerodynamic?
    RANS V3 (steel), RANS V-Rex, RANS Screamer

  5. #5
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by Glynis27 View Post
    Hello all. I have been using 26x1.5" Primo Comets on my DF bike for 2 years. I have been quite happy with them, but they will need to be replaced next spring. While looking for replacements, I have found that they are marketed as recumbent tires. Why is this? Is there any difference between a recumbent and DF bike tire? Any reason they should not be used on a DF bike?
    They're stock equipment on a lot of recumbents because they're available in different sizes to accomdate recumbent designs. There's nothing that makes them "recumbent" or "upright" tires per se.
    Jeff Wills

    All my bikes.

  6. #6
    Spinning @ 33 RPM Glynis27's Avatar
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    Ok cool. Thanks for the info. I couldn't think of any reason they would be different and I have used them happily for 2 years, so I didn't think it was a problem. Having never owned a bent, I wanted to make sure there wasn't something I was missing.
    1989 Fuji Saratoga
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  7. #7
    Senior Member BlazingPedals's Avatar
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    They may be called recumbent tires because 20" and 26" are the most common sizes on recumbents, and any road tire in one of those sizes is liable to be popular with recumbent owners.

  8. #8
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    Quote Originally Posted by JanMM View Post
    Does the recumbent position of the rider somehow make the tire aerodynamic?
    I think I read someplace, maybe the General Cycling Forum, that recumbent tires always think they're going downh...........oh never mind! It's probably just some silly rumor anyway.

    Tires are tires. The quality and properties of the tire should be mated to it's intended use. 'Bent or DF doesn't enter into the equation other than perhaps from a marketing standpoint.

  9. #9
    Bent builder purplepeople's Avatar
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    Quote Originally Posted by cranky old dude View Post
    I think I read someplace, maybe the General Cycling Forum, that recumbent tires always think they're going downh...........oh never mind! It's probably just some silly rumor anyway.
    Those who claim to be making history are usually just repeating it.

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  10. #10
    Senior Member Onus's Avatar
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    Quote Originally Posted by Glynis27 View Post
    ...Having never owned a bent, I wanted to make sure there wasn't something I was missing.
    Seems to me, a lot of people around here would probably say so... ...

  11. #11
    Senior Member BlazingPedals's Avatar
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    Quote Originally Posted by Onus View Post
    Seems to me, a lot of people around here would probably say so... ...
    Yeah, well... that's obvious.

  12. #12
    rebmeM roineS JanMM's Avatar
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    [QUOTE=cranky old dude;9798161]I think I read someplace, maybe the General Cycling Forum, that recumbent tires always think they're going downh...........oh never mind! It's probably just some silly rumor anyway.
    QUOTE]

    That's just Crazy Talk!
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  13. #13
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    Yep tires are tires, if they fit they are fine to use. I do ride a bent with Comets. Several bents use more narrow tires, but personally I dont think they are as safe. Two reasons, small tires are more prone to snake bite flats. Second, wider tires dont get caught in cracks in the road as easily. Somewhat personal experience there. Two friends were on a tour following a guy on a mountain bike. He rode right over a crack in the hiway, but the tandem my friends were on with more narrow tires dropped into the crack. My friends went down, and one broke his hip. It has screwed him up for years.

    One other thing. Since the Comets are 100lbs tires, they really arent losing much in the way of friction looss.

  14. #14
    Senior Member BlazingPedals's Avatar
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    Comets are racing tires. They have a light carcass, and a thin layer of rubber under the herringbone tread. To get acceptable longevity, they use a relatively hard rubber compound, so they don't grip quite as well in some conditions (namely in the rain,) and their thin rubber makes them susceptible to puncture flats. Aside from those shortcomings, I have found them to be one of the fastest tires for available 26" or 20", and being relatively inexpensive gives them great bang for the buck.

  15. #15
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    Quote Originally Posted by BlazingPedals View Post
    Comets are racing tires. They have a light carcass, and a thin layer of rubber under the herringbone tread. To get acceptable longevity, they use a relatively hard rubber compound, so they don't grip quite as well in some conditions (namely in the rain,) and their thin rubber makes them susceptible to puncture flats. Aside from those shortcomings, I have found them to be one of the fastest tires for available 26" or 20", and being relatively inexpensive gives them great bang for the buck.
    Hey Blazing Pedals,

    Caught your reply post on the relative speed of Primo's. Just bought a 26" used Hed front wheel for my High Racer that came with a Primo 1.0 racer on it. Have been using Stelvio's and Conti Grand Prix's before. Recently just purchased some 26" Durano's. Do you think there is any significant difference in speed of any of these tires? If you could rate them on paved surface under good weather conditions what would be your opinion? I now have all these tires availabe to me and don't know what is best for Time Trials.

    Thanks - Karjak

  16. #16
    Senior Member BlazingPedals's Avatar
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    I don't know how Durano rates but if I were to venture a guess, I'd say they're probably similar to Stelvios (since they're the replacement for Stelvios.) They're definitely a different tire from the Stelvio, though. But I'm reluctant to recommend them since I went through 6 Stelvios in the past and all of them failed before they were worn out -- some in as little as 100 miles. A week-old tire having the rubber peel off in strips in the middle of a race probably isn't a good thing! Stelvios and GPs are both faster than Primo Racers, but not by a lot. Ride-wise, the GP was the harshest tire, followed by the Primo, and the Stelvio was the most supple. I have a Durano on the front of my NoCom, and it seems to be fast and supple, like the Stelvio was. I sure hope it lasts longer, though!

  17. #17
    His Brain is Gone! Tom Bombadil's Avatar
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    Primo Comets came as original equipment on my Rans Stratus. They do roll very well, but are not the optimal tire for me. Speed isn't an issue for me and much of my riding is on dirt/gravel rail trails where walnuts lie in wait to puncture my tires. A more heavily armored tire with more tread would be better. But the Comets are nice & quiet on paved surfaces.
    "Too often I would hear men boast of the miles covered that day, rarely of what they had seen." Louis L'Amour

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  18. #18
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    Quote Originally Posted by BlazingPedals View Post
    I don't know how Durano rates but if I were to venture a guess, I'd say they're probably similar to Stelvios (since they're the replacement for Stelvios.) They're definitely a different tire from the Stelvio, though. But I'm reluctant to recommend them since I went through 6 Stelvios in the past and all of them failed before they were worn out -- some in as little as 100 miles. A week-old tire having the rubber peel off in strips in the middle of a race probably isn't a good thing! Stelvios and GPs are both faster than Primo Racers, but not by a lot. Ride-wise, the GP was the harshest tire, followed by the Primo, and the Stelvio was the most supple. I have a Durano on the front of my NoCom, and it seems to be fast and supple, like the Stelvio was. I sure hope it lasts longer, though!

    Thanks BP

  19. #19
    Senior Member Onus's Avatar
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    Quote Originally Posted by Tom Bombadil View Post
    ...where walnuts lie in wait to puncture my tires...
    I thought walnuts were the big green round ones; aren't sycamores and chestnuts the spiky ones?

  20. #20
    His Brain is Gone! Tom Bombadil's Avatar
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    Once the big green husks come off, they have needle-nosed ends.
    "Too often I would hear men boast of the miles covered that day, rarely of what they had seen." Louis L'Amour

    There are two types of road bikers: bikers who are faster than me, and me. Bruce Cameron - Denver Post

  21. #21
    Bikepath
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    Others have rcommended Schwelbe Marathon Slick and Conti Top Touring. I have used both with good wear and ride. Too bad they stopped making the Tioga Compool.

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