Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 34
  1. #1
    Senior Member Waxbytes's Avatar
    Join Date
    Jan 2003
    Posts
    511
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Preferred tire pressure?

    I was just wondering what size and pressure we all run our tires at?

    I use 700c X 25 mm Specialized All Condition Pros at 110 PSI in both front and rear.
    I wonder if I might find 100 PSI more comfortable without causing increased rolling resistance?
    Uhmm...

  2. #2
    Senior Member
    Join Date
    Jan 2006
    Posts
    248
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Waxbytes
    I wonder if I might find 100 PSI more comfortable without causing increased rolling resistance?
    Try it. You've got to ride the bike, so I'd say you're the best judge on any changes, good or bad.

  3. #3
    Senior Member Waxbytes's Avatar
    Join Date
    Jan 2003
    Posts
    511
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I am trying it. I just wondered what other people do.
    Uhmm...

  4. #4
    littlecircles bmike's Avatar
    Join Date
    Jul 2005
    Location
    Vermont
    Posts
    3,416
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I run Continental GP 4 Seasons. 110 PSI rear, 100 front. Seems to make a comfort difference.
    Can't wait for my new frame. Going to run 28's - probably at 95.

  5. #5
    Senior Member
    Join Date
    Sep 2004
    My Bikes
    Trek5000
    Posts
    949
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    On my road bikes, I have always inflated the tires to max pressure. So depending on the tire, the pressure could be 110 through 140PSI. I have never thought about using a lower pressure.

  6. #6
    Senior Member
    Join Date
    Apr 2004
    Location
    NoVa
    My Bikes
    Tour Easy recumbent, Giant Boulder SE with an Xtracycle attachment
    Posts
    300
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Conti Ultra 2000- 28 @ 110, Conti TT- 37 @ 85, and Conti TT- 47 @ 60. I was surprised to find that based on my coast-down tests, the 47 has the least rolling resistance of the lot. I'm thinking that with decent quality tires, matching the tire and pressure to the bike's gross weight, riding style, and even the type of bike is the key. It seems to be more art than science.
    Last edited by Hal Hardy; 07-30-06 at 07:29 PM.

  7. #7
    Senior Member Cadillac's Avatar
    Join Date
    Jan 2003
    Location
    Chilliwack, BC
    My Bikes
    Trek 2000, Catrike, Gitane tandem, no-name mountain bike
    Posts
    224
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Tire pressure

    I run the max recommended pressure (usually 110-120 psi) depending on the brand of tire.
    It seems to me that there is absolutely no comfort advantage in setting the pressure to 100 psi if it recommends 110 psi
    The only comfort advantage would be if the pressure were about half the recommended max (e.g., 60 psi).
    Doing that would wear out the tire prematurely and slow you down.
    "Weary with toil, I haste me to my bed,
    The dear repose for limbs with travel tired;
    But then begins a journey in my head,
    To work my mind, when body's work's expired"
    -- Shakespeare Sonnet XXVII
    Click here to visit Motorera.com

  8. #8
    Senior Member late's Avatar
    Join Date
    Oct 2002
    Location
    Southern Maine
    Posts
    8,290
    Mentioned
    54 Post(s)
    Tagged
    0 Thread(s)
    Hi,
    you want enough pressure so that the tire doesn't snake bite, and keeps it's shape when you are just rolling along. If you want a detailed explanation, Sheldon Brown (one of cycling's gurus) has one on his website. It depends a lot on how much you weigh. When you find his article, it will also explain the disadvantages of adding more pressure than you need to.

  9. #9
    Long Distance Cyclist Machka's Avatar
    Join Date
    Jan 2003
    Location
    I ride where the thylacine roamed!
    My Bikes
    Lots
    Posts
    39,830
    Mentioned
    41 Post(s)
    Tagged
    0 Thread(s)
    I ride Conti 1000s, 700x25, and I run them anywhere between 90 and 100 psi.

    There's really no point to going any higher than that, especially if you're a relatively light rider. A higher tire pressure won't reduce rolling resistance ... or if it does, it won't reduce it significantly enough that you'd notice. But a lower tire pressure (within reason, of course) will give you a softer, more comfortable ride, and can help reduce the chances of getting flats.


    Incidentally, if you are riding in sandy or icy conditions, significantly reducing your tire pressure can provide you with increased traction. I've ridden through several winters in Manitoba on my mtn bike. In the summer I kept those tires (26x2) around 50 psi ... in the winter I dropped them to about 30 psi.

  10. #10
    Has opinion, will express
    Join Date
    Jun 2003
    Posts
    13,027
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Waxbytes
    I was just wondering what size and pressure we all run our tires at?

    I use 700c X 25 mm Specialized All Condition Pros at 110 PSI in both front and rear.
    I wonder if I might find 100 PSI more comfortable without causing increased rolling resistance?

    Conti Ultra GatorSkins, 700 x 28C, at 80psi. Raised the eyebrows of someone the other day when I mentioned it. My butt has warned me several times when I have tried to trade comfort for speed on 1000 and 1200 rides. The warning was that my speed was going to drop way off later in the event because of butt discomfort, and that the trade-off of comfort throughout the event just wasn't worth it.

  11. #11
    Senior Member trmcgeehan's Avatar
    Join Date
    Oct 2002
    Location
    Somerset, KY -- near Lake Cumberland
    My Bikes
    1980 Univega; 1985 Ross; 1994 Trek 1400 -- all road bikes
    Posts
    757
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Inflate to the max! +10%

    Several years ago, I was experiencing a large number of rear tire flats. I have a Fuji touring bike, that takes 85 psi, and I was running around 50-60 (too lazy to pump them up). I got a number of pinch flats (two little cuts, like a snake bite), so I started inflating to 95 psi. Haven't had one since. Over inflating produces a hard ride, but it does cut down on flats.
    "I am a true laborer. I earn that I eat, get that I wear, owe no man hate, envy no man's happiness, glad of other men's good, content with my harm." As You Like It, Act 3, Scene 2. Shakespeare.
    "Deep down, I'm pretty superficial." Ava Gardner.

  12. #12
    Senior Member
    Join Date
    Jun 2006
    My Bikes
    ANT Club Racer, 2004 Trek 520
    Posts
    1,117
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Waxbytes
    I was just wondering what size and pressure we all run our tires at?

    I use 700c X 25 mm Specialized All Condition Pros at 110 PSI in both front and rear.
    I wonder if I might find 100 PSI more comfortable without causing increased rolling resistance?
    In the summer, I normally run 700x32 Pasela T-Servs at 90 PSI. Like Rowan mentioned, it's comfort over speed for me. Last summer, I ran with a pair of 700x28s Bontrager Race Lites, took them out on a three day tour, and by the time I got home, my hands and butt were pretty sore and beaten up. Took 'em off and haven't put them on the bike since.

    In the winter I switch to a 700x37 Conti TT up front and a 700x37 Conti Travel Contact on my rear wheel to deal with snow, salt and sand debris. Both are inflated to 70 PSI.

  13. #13
    Senior Member
    Join Date
    Nov 2004
    Posts
    372
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    On my road bike I have 700x28 Gatorskins inflated to 120 psi. At 210 lbs the tires, specially the rear on climbs, will feel squishy otherwise. If I was lighter, I'd definitely go down to 100 psi or so.

  14. #14
    Senior Member Waxbytes's Avatar
    Join Date
    Jan 2003
    Posts
    511
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It seems that tire pressure is a very personal other than everyone wants to keep the pressure above where flats happen. I notice I am running narrower tires than everyone. My Sequoia can handle wider tires so when it's time to replace rubber I will try a 28mm.
    Uhmm...

  15. #15
    Senior Member
    Join Date
    Jun 2005
    Location
    Paris
    Posts
    65
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yeah, try them at 100 instead of 110 and let us know. Tight as snare drums is how i run them, 115 or 120.

  16. #16
    Senior Member
    Join Date
    Jun 2005
    Location
    Paris
    Posts
    65
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    sounds good to me

  17. #17
    don't try this at home. rm -rf's Avatar
    Join Date
    Jan 2006
    Location
    N. KY
    Posts
    2,756
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Like some other posters, I'm riding 100 front and 110 rear. Seems like a good compromise.

  18. #18
    Senior Member Waxbytes's Avatar
    Join Date
    Jan 2003
    Posts
    511
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I dropped the pressure down to 100psi in both tires and have ridden a couple of hundred miles since on my familiar routes. I feel slightly more comfortable, but I could just be feeling what I expect to feel, the placebo effect. I haven't noticed any increase in rolling resistance and my average speed is the same as measured by my cyclocomputer.

    BUT I do save two strokes of the floor pump when airing up!!!
    Uhmm...

  19. #19
    Senior Member Polonswim's Avatar
    Join Date
    Jun 2005
    Location
    North Orange County, CA
    My Bikes
    Gary Fisher MTB and a Klein Quantum II
    Posts
    290
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vittoria Rubino Pro slicks. 195 lbs. I was running them at 110, but they felt mushy and slow. I upped the pressure to 120 and am VERY happy with the ride.
    If you want to cross the country, fly a plane.
    If you want to see the country, drive a car.
    If you want to know the country, ride a bike.

  20. #20
    Senior Member trmcgeehan's Avatar
    Join Date
    Oct 2002
    Location
    Somerset, KY -- near Lake Cumberland
    My Bikes
    1980 Univega; 1985 Ross; 1994 Trek 1400 -- all road bikes
    Posts
    757
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    An air compressor does the trick!

    With five bikes, I bought an air compressor at Lowes for around $60. Man, this thing really saves work! You have to be careful you don't overinflate, but I have had no problems.
    "I am a true laborer. I earn that I eat, get that I wear, owe no man hate, envy no man's happiness, glad of other men's good, content with my harm." As You Like It, Act 3, Scene 2. Shakespeare.
    "Deep down, I'm pretty superficial." Ava Gardner.

  21. #21
    Infamous Member chipcom's Avatar
    Join Date
    Sep 2005
    Location
    Ohio
    My Bikes
    Surly Big Dummy, Fuji World, 80ish Bianchi
    Posts
    24,373
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Conti TT 2000 and Contacts, all 700x32 at 80lbs. Serfas Drifters, 26x1.9 at 65lbs
    "Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey

  22. #22
    Senior Member Richard Cranium's Avatar
    Join Date
    Jun 2002
    Location
    Deep in the Shawnee Forest
    My Bikes
    LeMond - Gunnar
    Posts
    2,786
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Why not try 90psi? If you actually want a more comfortable ride, use larger tires if your bicycle will allow it.

  23. #23
    Senior Member dlavi's Avatar
    Join Date
    Jan 2003
    Location
    MN
    Posts
    69
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Panaracer Pasela Tourguard 700 x 32 at 85 psi

  24. #24
    totally louche Bekologist's Avatar
    Join Date
    Oct 2004
    Location
    A land that time forgot
    My Bikes
    the ever shifting stable loaded with comfortable road bikes and city and winter bikes
    Posts
    18,026
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    pasela T-serv for messenger 700x35c @90 PSI, Conti travel contact 700x37c @90 PSI as well.

    Taut and Fat.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

  25. #25
    Senior Member
    Join Date
    Jun 2006
    Location
    near Olympia Washington
    My Bikes
    Merckx Team SC, Merckx ti with a lot of miles, Cannondale T1000, Tandem Tuesday
    Posts
    104
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It seemed to go against what I have always believed but I rode a very tough and long ride recently with a very rough road. I put on ruffy tuffy 28C tires and started at 90 but reduced pressure on the way. With the tire being so large (by my standard) there is some room to play with on pressure. A real different ride is found with the use of variable pressures depending on the road conditions. It didn't seem to significantly slow me up.
    John

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •