Results 1 to 5 of 5
  1. #1
    mtbr member
    Reputation: b rock's Avatar
    Join Date
    Jan 2017

    fattest tires for mid 90s GT + Manitou 3

    What are the fattest tires you've squeezed in the back of a mid 90s GT or in a Manitou 3 shock (same era)?

    I'm still riding my 1994 GT Karakoram (22" frame with original 559-16 rims) with the Manitou 3 I bought back then (and recently replaced the melted elastomers with a firm + long travel kit). I couldn't fit a 2.1" WTB Exiwolf on the back without rubbing the frame, although it is possible that 24 year old rim is out of true... so I put a 2" Hutchinson Python on the back at the last minute before a ride. I have a 2.1" Exiwolf up front, but I feel like I can go wider, after reading a decade old post on another forum where someone fit a 2.3" WTB tire on the front of their '94 Karakoram... likely with the stock rigid fork.

    I don't know that I need to go wider, I am pretty happy running 30 psi up front and 33 in back with tubes (I am 195 lbs, 6'3"), but I want to get the most traction on loose over hardpack that I can out of this bike that I still love riding.

  2. #2
    Sneaker man
    Reputation: mik_git's Avatar
    Join Date
    Feb 2004
    I ran 2.2 Darts for a while on M3's, plenty of room for the tyre, but issues with removing past brake pads. I was running 2.1 smokes on the rear of my Xizang, from memory a bit of room left so could maybe run 2.2...depends on the tyre/rim I guess.
    All the gear and no idea.

  3. #3
    Rubber Side Usually Down
    Reputation: Mr Crudley's Avatar
    Join Date
    Jan 2006
    I might be that guy. My 93 Timberline with rigid GT forks has WTB Motoraptors in 2.3 and my 92 Avalanche with M4's has Ritchey Zmax Megabites. I think Ritchey is a 2.4 and are a big tyre for that era but was damn reassuring. Both fit with no complications.

    Sent from my F5121 using Tapatalk
    'Geez, I wish I had a witty signature'

  4. #4
    mtbr member
    Join Date
    May 2011
    Manitou 3 forks spacing between the stanchion legs is 92mm. I modified a manitou 3 fork to accommodate a fatbike tire with casing width of 87mm (3.15"), this is about the max tire width that will fit between the stanchions of a manitou 1/2/3/4 fork. More of a concern than the width of the tire between the stanchions is the height of the tire, for contact with the cross brace arch and more importantly with the fork crown at max compression. For my manitou fatbike conversion that dealt with addressing these limitations, see post 16 of thread;

    Since your Karakoram has a steel frame, you can obtain more tire clearance at the chainstays by crimping and/or bending for additional tire clearance. Tange MTB tubing is fairly stout CrMo tubing, I really wouldn't have any structural concerns about getting medievil with re-contouring chainstays to suit your use.

  5. #5
    mtbr member
    Reputation: EBasil's Avatar
    Join Date
    Jan 2004

    The trick may be which tires you can even choose from...

    In terms of the Manitou (as noted, the 1,2,3,4 are the same in terms of what will fit, and the Mach 5 got bigger), I ran the Ritchey ZMax 2.35's in all those forks and that was the largest casing I ever fit without binding at compression. However, that's a short knob, round tire ( like the 2.4 Mutano Raptor that fits a Mach) and tall knob, squared profile tires like the Fire XC, Dart, Smoke were tight, functional fits at the nominal 2.1, etc...

Similar Threads

  1. Mid '90s Fisher Mamba Resto Mod
    By spankbomb in forum Vintage, Retro, Classic
    Replies: 8
    Last Post: 01-19-2017, 03:21 PM
  2. Mid-90s Judy Rebuild
    By ArchiProf in forum Vintage, Retro, Classic
    Replies: 9
    Last Post: 07-18-2016, 02:58 PM
  3. Mid-90s Diamondback Ascent EX project
    By MB_rider in forum 26er Bikes
    Replies: 10
    Last Post: 03-24-2016, 01:44 PM
  4. Need help with old mid-90s headshok
    By TiGeo in forum Vintage, Retro, Classic
    Replies: 6
    Last Post: 05-21-2015, 04:17 PM
  5. Need help with old mid-90s headshok
    By TiGeo in forum Cannondale
    Replies: 2
    Last Post: 05-31-2011, 07:00 AM

Members who have read this thread: 1

Posting Permissions

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




© Copyright 2018 VerticalScope Inc. All rights reserved.