Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Senior Member Chris W.'s Avatar
    Join Date
    Jul 2008
    Location
    Nampa Idaho
    My Bikes
    76' Centrurion Pro-Tour, 81' Woodrup Giro-Touring, , 85' Trek 520, 86' Specialized Rock Hopper, 95' Rock Hopper Ultra.
    Posts
    918
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Max tire size for an 85 Trek 520???

    Long term back burner project coming to fruition...This was the first year with the the cast livable and a sportier geometry. So the question is, what size tire can I fit with, and without fenders? I'm thinking 25 and 28? Thanks!

    Cheers,
    Chris

  2. #2
    Bianchi Goddess Bianchigirll's Avatar
    Join Date
    Apr 2009
    Location
    Camp Hill, PA
    My Bikes
    Too many to list here check my signature.
    Posts
    20,163
    Mentioned
    32 Post(s)
    Tagged
    1 Thread(s)
    Hi Chris, I can't believe none of the Trek fans chimed in on this yet. I would suspect a x28 road tire would be no problem with or without. If your frendly with your local shop maybe they will let you experiment with some tires.
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  3. #3
    Senior Member VeloBrox's Avatar
    Join Date
    May 2011
    Location
    Oslo, Norway
    My Bikes
    1951 Armand Carlsen, 1969 DBS Deluxe, 1949 Diamant, 1978 DBS Winner Tandem, 1955 Herkules... to infinity and beyond!
    Posts
    378
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    When building up my 1983 Trek 620 (which I've heard has ampler room than later years) I was amazed that 28mm tires barely fit under 45mm fenders.
    -------------------------------------------------------------------------------
    1986 Peugeot PY10M
    1983 Trek 620
    1980 Peugeot PY10S (everyone needs two of these)
    1961 Monark 90320
    1953 Crescent modell nr. 11
    1942 Diamant modell nr. 11
    ...and a basement full of unrideable old stuff.

  4. #4
    Hopelessly addicted... photogravity's Avatar
    Join Date
    Aug 2009
    Location
    Central Maryland
    My Bikes
    1949 Hercules Kestrel, 1950 Norman Rapide, 1970 Schwinn Collegiate, 1972 Peugeot UE-8, 1976 Raleigh Sports, 1977 Raleigh Sports, 1977 Jack Taylor Tandem, 1984 Davidson Tandem, 2010 Bilenky "BQ" 650B Constructeur Tandem, 2011 Linus Mixte
    Posts
    4,673
    Mentioned
    10 Post(s)
    Tagged
    2 Thread(s)

    Max tire size for an 85 Trek 520???

    My 2006 Trek 520 came with 32-622 tires and could have accommodated 35-622 without any problems, even with fenders attached.
    --
    Ridding the world of derailleurs, one bicycle at a time.

    46 Hercules Roadster, 49 Hercules Kestrel, 50 Norman Rapide, 51 Hercules Lion, 52 Hercules Windsor, 56 Hercules Royal Prince, 61 Fiorelli Tandem, 67 Carlton Super Race (IGH), 70 Schwinn Collegiate (IGH), 71 Hercules, 71 STF Hercules, 72 Peugeot PX-8 (IGH), 76 Raleigh Sports, 77 STF Raleigh Sports, 77 Jack Taylor Tandem, Early-80's Mike Appel SC, 84 Davidson Tandem, Late-80's Alpine, 10 Bilenky "BQ" Signature Tandem

  5. #5
    Have bike, will travel Barrettscv's Avatar
    Join Date
    Feb 2006
    Location
    Windy City
    My Bikes
    A road bike for every purpose
    Posts
    9,015
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    If your '85 Trek has long reach caliper brakes, a size 700x28 may be the largest you can fit with fenders.

    If your '85 Trek has cantilever brakes, a size 700x32 should fit with fenders.

    Considering that the 1985 Trek touring bikes came with 27x1.25 tires, fitting a 700x32 should not be a problem.
    Last edited by Barrettscv; 08-26-12 at 05:51 AM.
    2014 Trek DS.1: "Viaggiatore" A do-it-all bike that is waiting in Italy
    2012 Pedal Force CG2: "Secolo Bicicletta" the modern carbon fiber road bike
    2012 Pedal Force CX2: "Carbone CX" the carbon fiber CX bike
    2010 Origin 8 CX 700: "Servizio Grave" Monstercross/29er bike
    1997 Simoncini Special Cyclocross: "Little Simon" lugged Columbus steel CX bike
    1987 Serotta Nova Special X: "Azzurri" The retro Columbus SPX steel road bike

  6. #6
    Senior Member Chris W.'s Avatar
    Join Date
    Jul 2008
    Location
    Nampa Idaho
    My Bikes
    76' Centrurion Pro-Tour, 81' Woodrup Giro-Touring, , 85' Trek 520, 86' Specialized Rock Hopper, 95' Rock Hopper Ultra.
    Posts
    918
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks a bunch folks! This is the 520 with Shimano 600 long reach brakes. It will probably end up with 25mm tires with 37mm fenders.

    Cheers,
    Chris

  7. #7
    DRF aka Thrifty Bill wrk101's Avatar
    Join Date
    Jan 2008
    Location
    The NC Mountains
    My Bikes
    Too many to list, all vintage
    Posts
    19,466
    Mentioned
    57 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by Barrettscv View Post
    If your '85 Trek has long reach caliper brakes, a size 700x28 may be the largest you can fit with fenders.

    If your '85 Trek has cantilever brakes, a size 700x32 should fit with fenders.

    Considering that the 1985 Trek touring bikes came with 27x1.25 tires, fitting a 700x32 should not be a problem.

    1985 Trek 520 came with 700-25 tires. I was surprised it did not have 27s, and side pull brakes. Specs changed almost every year, in 1985, the 520 was considered a "sport touring" model, while the 620 and 720 were the touring models they both came with 27 x 1 1/4 tires).

    Meanwhile, the 1984 Trek 520 was in their touring catalog, had canti brakes, 27 inch wheels, etc. Odd move.
    Last edited by wrk101; 08-26-12 at 11:14 AM.
    See some of my bikes on facebook: http://www.facebook.com/BillsVintageSteelBikes

    Or visit my finished bikes flickr page: http://www.flickr.com/photos/billssteelbikes/

  8. #8
    Senior Member fender1's Avatar
    Join Date
    Jan 2006
    Location
    Berwyn PA
    My Bikes
    I hate bikes!
    Posts
    4,461
    Mentioned
    9 Post(s)
    Tagged
    0 Thread(s)
    Gonna say 32mm w/ fenders 35 without.

Posting Permissions

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