Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Newbie
    Join Date
    Aug 2009
    Location
    Parker, Colorado USA
    My Bikes
    Peugeot Tourmalet Road Bike
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    700 wheel and 27" tires?

    Hello! Have a 1987 Peugeot Tourmalet. I recently found a photo of the original catalogue page and noticed that the stock wheels were Rigida 700x23c. However, the tires on the bike now are Continental 1000, 27x1-1/8. The wheels look exactly like the catalogue, right down to the black rims. Is it possible to run this size tires on the rims? Just not sure what i have for future tire/wheel repair scenario. Thanks!

  2. #2
    Senior Member
    Join Date
    Jun 2004
    Location
    Northern Nevada
    Posts
    3,747
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Tubes are interchangeable between 700 and 27, but not the tires. Most bikes sold in the U.S. until about the time yours was made came with 27-inch rims, while most European bikes used the slightly smaller 700s. By the '90s, I think (I forget exactly when) 700 had pretty much become the road standard. If your tires are marked 27-inch, that's what you'll need to buy.
    There's no particular advantage to either size, though as 27 fades, the range of available tires has shrunk. If you ever have to replace wheels, you might check the brakes to see if the pads can be moved enough to allow you to use 700C rims--it's a minor adjustment if they can, and you'd greatly expand your range of tire possibilities. Probably not worth spending the money unless you need new wheels anyway, though.

  3. #3
    Senior Member
    Join Date
    Apr 2009
    Location
    Raleigh, NC
    My Bikes
    too many to list
    Posts
    369
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    No. 27" and 700c tires are NOT interchangeable. 27" tires go on 27" wheels, and 700c tires go on 700c wheels.

    As Velo Dog said, you can use a tube spec'd for a 27" tire in a 700c tire and vice versa. However, you still need to pay attention to the tube diameter - it will have a range of sizes it's supposed to fit printed on the box (e.g. 700 x 21-25, or 700 x 23-28, or 27 x 1.25-1.75)

  4. #4
    Newbie
    Join Date
    Aug 2009
    Location
    Parker, Colorado USA
    My Bikes
    Peugeot Tourmalet Road Bike
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks to both of you for the information. In regard to the 700 wheel switch, aside from moving the brake pads (I looked at the mount and seems to have loads of room top and bottom), are there other considerations? Chain? Cage length?

  5. #5
    Senior Member
    Join Date
    Nov 2008
    Location
    Bay Area, Calif.
    Posts
    4,824
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Len-Taylor View Post
    Thanks to both of you for the information. In regard to the 700 wheel switch, aside from moving the brake pads (I looked at the mount and seems to have loads of room top and bottom), are there other considerations? Chain? Cage length?
    No, as long as you can move the brake pads down by 4 mm you should be able to use 700c wheels instead of 27" ones. When getting new wheels of either size you'd also want to check your current hub width between the frame dropouts and either verify that the new wheels are the same or that you can spread the dropouts enough to fit.

    You might also check the tire sidewalls to see if there's an indication of the actual rim size: 700c is 622 mm whereas 27" is 630 mm. Since your tire width is 1 1/8" (28 mm) you'd look for either 622-28 or 630-28 to confirm the actual size.

Posting Permissions

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