Elevation Wheel Company
  • Home
  • Custom Wheels
  • Service
  • Bike Builds
  • News & Tips
  • Store

Fatbike rim width, how to choose the right one

9/29/2016

5 Comments

 
Picture
Size Matters...when talking rim width (get your mind out of the gutter people).  Rim width plays a huge role in how your bike handles, how your tires feel, and how easily you roll over loose or irregular surfaces.  This applies to all styles of bikes no doubt, but unlike skinnier tired bikes, rather than slightly tweaking handling characteristics, rim width on a fatbike can completely transform the way a fatbike handles, from a light and nimble singletrack slayer to a monster truck that goes over any and everything in its path but might not handle being thrown around quite so well.  Below is a quick and dirty guide to help you select the best possible rim width for your riding style.

Plus Widths (40mm-50mm) - These rims while not technically true "fat" sizes deserve honorable mention, especially for those of us trying to build super light wheels on the cheap or those of us who want to build a bike with loads of traction but will never need to take full advantage of the float fatbikes can offer.  These are obviously great with "plus" or 3" wide tires but they can also work well with 4" wide fat tires.  They round the profile of the tire a bit which cuts down on float but it makes the bike transition from upright to railing corners very quick and easy.  Lots of riders like this option when trying to get a set of wheels in the weight range of a proper carbon fat rim but without spending a ton of cash.  Just don't try to mount anything wider than a 4" tire on them.

65mm Widths - This is by far my favorite size to build for year round fat biking.  They are light, they make leaning the bike into corners super easy, and still give good enough float for MOST riders.  They are great everywhere but super deep sand/snow.  They can even take 5" tires without issue.

80mm Widths - If you mostly use your fatbike in sand/snow but still would like it to handle reasonably well on fast techy singletrack, this is a great rim width for you.  They have most of the float of a 100mm rim but without hurting the way your bike feels on tight twisty trails too much.  They can take all tire sizes and take you nearly anywhere you would like to go.  This truly falls into the jack of all trades, master of none (except maybe groomed snow) category.  If you don't know what size to order after reading this, get 80's.

100mm Widths - Right now this is about as big as fat rims come, these really turn your bike into a monster truck.  You will roll over/through nearly anything in your path, they give more float in deep sand and snow than anything else out there.  They also flatten your tire out pretty significantly meaning more of the knobs are in contact with the ground to give you as much traction as possible.  The downside to all that is they make getting the bike leaned over and into a tight corner take a bit more effort and increase rolling resistance on firm surfaces but this is OK because this rim is to take you to places a bike can not normally go.  That's not to say you can't ride technical singletrack on them, because you absolutely can and some people love the way they feel there, just know it will take a bit more effort to move the bike around underneath you.  Naturally being the biggest, they are also the heaviest so unless you are looking at rims like the HED BFD, expect to pay a bit of a weight penalty.

Obviously personal preference can make all points above moot but for most riders, this will give you a really good starting point to selecting the best rim width for your bike.  Always be sure to take into consideration frame limitations, if a 5" tire barely clears your frame on 80mm rims, don't expect to move up to 100mm wide rims because the wider your rims are, the wider your tires will pack out.  Feel free to email me via the contact form with any more specific questions.
5 Comments
Bryan Andrews
9/29/2016 05:01:50 pm

Great read, good information.

Reply
Chris
9/30/2016 06:42:06 am

Thanks!

Reply
Dom
3/18/2018 08:31:40 am

Ho!!

Can I run Panaracer fat B nible 3,5" x 27,5+ on Sunrigle 80 mm rims??
http://plusbikes.com/first-look-panaracer-fat-b-nimble-27-plus-tires/

Reply
Jose Prieto
9/3/2020 10:43:45 am

Hi I want to build a really really fat tire cruiser bike. I would be riding it on the street and beach. I would like to go as large (wide) as possible at a 26 inch rim.

Now for the kicker....I'd like to do front and rear electric brushless motors.

Can you build it if I provide the motors?

What would the cost be? Can you recommend a frame or frame builder and what front forks to use?

I'd like to use off the shelf parts.

Thanks for any help.

Reply
David Yip
10/13/2020 02:19:33 pm

Hi, I am living in Vancouver BC, I am also building a fat bike and will bring it to Taiwan next year.
Every components are here except two wheel sets, I am looking for 2 fat rims to fit my 27.5x4.5 fat tires.
Any suggestions or resources that can help me out would be appreciated.
Thanks and hope can hear from you soon.

Reply



Leave a Reply.

    Chris Murray

    Obsession, or passion?  Who am I to judge?  Either way I simply love building wheels for those who appreciate quality!

    Archives

    March 2021
    February 2021
    January 2021
    November 2020
    October 2020
    September 2020
    August 2020
    June 2018
    May 2018
    October 2017
    September 2017
    September 2016
    October 2015
    September 2015
    August 2015
    April 2015
    March 2015
    November 2014
    October 2014
    August 2014
    March 2014
    February 2014

    Categories

    All
    Bike Industry News
    Bike Mechanic Tips
    Bike Racing / Training
    Custom Bike Builds
    Hub Breakdowns
    Product Reviews

    RSS Feed

Proudly powered by Weebly
  • Home
  • Custom Wheels
  • Service
  • Bike Builds
  • News & Tips
  • Store