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26" Trek EX6 Full 2011- what size of a plus tire

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26" Trek EX6 Full 2011- what size of a plus tire

Old 07-09-21, 06:33 AM
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26" Trek EX6 Full 2011- what size of a plus tire

I bought used Trek ex 6 2011 and I would like to put bigger (plus size) tires to it. What is the maximum for this bike? Can it fit 26x 2,5" ?

Link to the model : archive.trekbikes.com/pl/pl/2011/trek/fuelex6#/pl/pl/2011/trek/fuelex6/details
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Old 07-09-21, 07:26 AM
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A true plus tire (2.8 and up) will rub the fork and rear stays. Rim width will also be a factor. If you want extra cush/float that wider tires offer, look into changing your rims to a minimum of 23mm ID and pair with 2.4 or 2.5 tires.
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Old 07-09-21, 08:41 AM
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I'd be surprised if you could fit plus tires on that bike. The majority of bikes that accepted plus tires didn't hit the market until about 2015 and they were 27.5 x 2.8/3.0
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Old 07-09-21, 07:28 PM
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Measure the tires on there now (with calipers) as well as how much clearance you have around the tires in the frame and fork.

What tires are on there now?

Last edited by Kapusta; 07-09-21 at 07:31 PM.
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Old 07-09-21, 07:43 PM
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Maybe some really wide 24" but that will probably lower things too much if they even fit. You are probably not going to fit very wide tires on that bike and have any sort of clearance which is important on a mountain bike.
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Old 07-10-21, 06:01 AM
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What fork is on the bike? Specs don’t say.
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Old 07-11-21, 02:35 PM
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Parts that are on it:
- Rims - Bontrager at-850 disk 26"
- Fork - Rock shox recon
- Front tire - 26x2.25 57-559 ( around 7cm of measured free space in width for a tire )
- Back tire - 26x2.10 54-559 ( around 8 cm of measured free space in width for a tire)

Tires are almost smooth so I need to buy new ones. I can get some cheap 26x 2.35 or 26x 2.50 enduro tires but are they going to fit on the rims or I need wider rims?

Last edited by ruffpl; 07-11-21 at 02:39 PM.
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Old 07-11-21, 09:28 PM
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Originally Posted by ruffpl
Parts that are on it:
- Rims - Bontrager at-850 disk 26"
- Fork - Rock shox recon
- Front tire - 26x2.25 57-559 ( around 7cm of measured free space in width for a tire )
- Back tire - 26x2.10 54-559 ( around 8 cm of measured free space in width for a tire)

Tires are almost smooth so I need to buy new ones. I can get some cheap 26x 2.35 or 26x 2.50 enduro tires but are they going to fit on the rims or I need wider rims?
I’m confused. You have 7cm clearance around the front tire? And 8cm around the rear? Thats impossible. Do mean 7mm and 8mm?
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Old 07-12-21, 12:05 AM
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It is measured space between left and right pipe of fork at the (probably) narrowest point without front wheel and space between pipes of rear swingarm (or how it is called) if the wheel was removed (I dont have caliper to measure it accurately)

Last edited by ruffpl; 07-12-21 at 03:02 AM.
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Old 07-12-21, 05:34 AM
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Originally Posted by ruffpl
It is measured space between left and right pipe of fork at the (probably) narrowest point without front wheel and space between pipes of rear swingarm (or how it is called) if the wheel was removed (I dont have caliper to measure it accurately)
What you really should be measuring is the clearance around the current tires while in the fork and frame. Measure sides and top. You can use a set of metric hex wrenches to get a good idea how much clearance you have. (You know how thick they are, so just see which ones fit).

A Recon should be able to clear a 2.5, and most FS frames from 2011 should be able to clear a 2.35.
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Old 07-12-21, 10:13 AM
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Originally Posted by ruffpl
I can get some cheap 26x 2.35 or 26x 2.50 enduro tires but are they going to fit on the rims or I need wider rims?
Either tire will fit the rim. That isn't the problem. The problem is that the 2.5 wide tires may not fit on the bike. You have a small chance of a 2.5 tire fitting on the front, but a 2.5 tire will probably rub on the frame in the back.
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Old 07-12-21, 10:15 AM
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I am thinking about 2.5 on front and 2.35 on back. If it will not fit I will go with 2.4 on front
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Old 07-12-21, 12:39 PM
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Originally Posted by ruffpl
I am thinking about 2.5 on front and 2.35 on back. If it will not fit I will go with 2.4 on front
Just to be clear, I said a Recon should be able to clear a 2.5, and most FS frames from 2011 should be able to clear a 2.35.

"Should" and "most" are the operative words here.

Measure like I said before you buy.
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Old 07-22-21, 01:33 PM
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I had bought one for test and I had fit 2,5 in front (I can not upload photos on forum). I still have 1cm to the top of the fork and 0,7 +0,7 on sides (and it does not touch the fork even when I try to bend it).I think I will buy second one and give it a try on the back.

Last edited by ruffpl; 07-22-21 at 02:27 PM.
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