Tire Size Chart For Bicycle Rim

Here is our general recommendation on the tire width range that works best with a given internal rim width.

This is an estimation of rim width tyre size chart to help identify what rims you should look at, however tire brands will have their own recommendations which should be adhered to. This information can be found on the sidewall of your tires.

Generally speaking, if your tire is narrow compared to the rim, you risk pinch flatting and damage to the wide rim. If your tire is too wide compared to the rim, you risk burping/excess tire roll, and poor stability.

TIRE SIZE COMPATIBILITY CHART FOR MTB RIM

Internal rim width (mm) 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 40 45 50
Tire size 1.9"
Tire size 2.0"
Tire size 2.1"
Tire size 2.2"
Tire size 2.3"
Tire size 2.4"
Tire size 2.5 - 2.7"
Tire size 2.8 - 3.1" (Plus)

Check out the size chart for road rims and fatbike rims from our Support.

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COMMENTS

P

Paul 2019/09/26

Any difference between tubes/tubeless? I'd like to make my bike tubeless, inner width 24 mm, tires 2.4".


LightBicycle 2019/09/27

Hi Paul, Are you using rim stripe or tubeless tape? If the tape/stripe is not too thick (Gorilla tape for instance). The tire size would be compatible for both tube and tubeless rims. Which mtb rim are you interested in? Let me know if you got any question regarding. Thanks, Lightbicycle


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Ian 2019/09/20

What is the widest road tire in mm that would fit on a mavic krysruim elite with 19mm internal width


LightBicycle 2019/09/21

Hi Ian, For 19mm internal width rim, we would recommend not go under 23c tires. Do note that rim from different brands is with a different design. Light Bicycle's tire size chart works the best for Light Bicycle self- made rims. Thanks, Lightbicycle


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Jordan 2019/09/06

I have wtb st i29 rims. Can I get away with putting 2.8 or 2.9 tires on them? I ride in south lake tahoe, CA and its really sandy so I want more grip. I weigh 150 pounds. What would be a good psi to run them if I can out them on? Thanks for the help!


LightBicycle 2019/09/07

Hi Jordan, What is your rim inner width? I checked on WTB website, it is 23mm inner width or 25mm inner width. Both these two rims are too narrow for 2.8~2.9" tire size. ​ Thanks, Lightbicycle


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T

Tom 2019/08/19

Thankyou for a simple easy to understand rim / tyresize guide.


LightBicycle 2019/08/20

Hi Tom, Glad that our size chart been helpful to you. Feel free to contact us if you have any other questions, it's totally alright if you are not planning on purchasing anything from us. LB is always glad to provide assistance that we can. Thanks, Lightbicycle


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D

Darren 2019/07/25

Hi, I have a 35 internal rim (WTB i35 tcs 2.0 rim) on my Whyte 901 MTB which currently has a 2.8 tyre on it. i want to go to a 2.2 (Continental Race King 2.2) if possible to do some fast rolling hard pack/tarmac riding. Anybody know if its a complete no no going to such a thinner tyre on these rims? thanks


LightBicycle 2019/07/26

Hi Darren, It is better not to mount 2.2" tire with on 35mm inner width rims/wheels. The tires are too thin to mount on these 35mm inner mtb rims/wheels. Thanks, Lightbicycle


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Dom 2019/07/01

I have 27.5 x 2.20 tires, would i be able to run 27.5 x 2.40?


LightBicycle 2019/07/02

Hi Dom, What 650B bike rims are you going to build your wheels with? Could you provide the rim width (inner and outer width) so I can help you find out whether the tires will fit or not? Thanks, Lightbicycle


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L

Lee 2019/07/01

What's the wt. of xc 725 rear rim with onyx rear hub. No boost 9 x 135 quick release. Spoke weight also. Ready to roll . 700 grams ? 800 grams .


LightBicycle 2019/07/11

Hi Lee, For the rear 650B XC wheel XC725 standard recon pro with Onyx rear classic hub ( 28H, Shimano MTB 10/11S Alloy free hub ), the weight is 900±25g. If you like lighter hub, you can go for DT Swiss 240S. Thanks, Lightbicycle


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I

ian 2019/03/13

my rim has a 23mm inner width, can I run a 2.4" TYRES on it? planning to put the maxxis ardent 2.4" tyre...


LightBicycle 2019/03/14

Hi Ian, The 2.4" tires will be ok to mount on your 23mm inner width mtb rims. Thanks, Lightbicycle


O

Oskar 2019/06/15

I have 40mm rims which came with 27.5 x 2.8 wheels and was wondering if I can get thinner wheels next time like 2.5/2.6 will the 40 mm rims work with 2.5/2.6 wheels ?


LightBicycle 2019/06/17

Hi Oskar, Our 650b rim with a 40mm width, 31.5 depth is compatible with 2.4~3.1" (LB recommendation) tires. So the narrower 2.5/2.6" will be ok to mount on our internal 33.3mm outer width 40mm (AM733) 27.5 bike rims. We also have 28mm inner or 30mm inner 650B mtb rims. Thanks, Lightbicycle


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H

Harel 2019/01/27

Hi my bike currently has 2.2 inch tyres and i want to upgrade the wheelset to 25mm internal width will it fit perfectly?


LightBicycle 2019/01/29

Hi Harel, Yes, the 2.2" tire will fit well on the 25mm internal width rim. What size rim are you looking for? Our XC925(29er) & XC725(650b/27.5") are both with 25mm internal width. Thanks, Lightbicycle


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K

Kass 2018/07/27

How do I work out the internal width rim? I have Alex TD26 27.5" rims, but I can't find the internal rim width anywhere (am I supposed to removed the tyre and measure?


LightBicycle 2018/07/27

Hi Kass, I think you can contact the manufacturer to get the rim profile to see the measurements for the rim. Including internal width. On the other hand, the quicker way would be you measure the internal width yourself. Attaching with one of our rim's profile for your ref so you can know what exactly should you measuring. Thanks, Lightbicycle


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