Tire Size Chart For Bicycle Rim

Tire Size Chart For Bicycle Rim

When it is time to replace your well-worn tires, it is a good opportunity to unlock the full potential of your wheels by trying something new. This chart will provide guidance on what tires sizes can match your internal rim width.

Unfit tire size could damage the rim and put the riders in danger. If the tire is not wide enough, you’re risking more pinch flats and blowouts; if it is too wide, tire burping and poor stability may occur.

In this blog, we list the recommended tire size charts for LB mountain/road/fat rims. Check it carefully before ordering carbon rims or buying new tires. If your combination is not listed here, please contact us to discuss it.

MTB RIMS / TIRES

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)

Note:

The recommendations are based on our rim-tire compatibility tests with some of the most popular tires. This chart only serves as a general guide since bead design, inflation pressures, and other variables will affect the actual rim-tire compatibility. Please send the rim profile to the tire manufacturer to double-check.

We don’t suggest choosing the largest or smallest values of a size range. For example, with a range from 1.9” to 2.1”, 2.0” is an optimal option for most riders.

The chart is only applicable to Light Bicycle rims with a unique rim-tire interface. If you use rims of other brands, please send a rim profile to the tire maker for recommendations.

ROAD RIMS / TIRES

Internal rim width (mm) 17-19 20-21 22-23 24-25
Tire size 23-25C
Tire size 25-28C
Tire size 28-30C
Tire size 30-33C
Tire size 33-35C
Tire size 35-38C
Tire size 38-40C
Tire size 40-43C
Tire size 43-45C
Tire size 45-48C
Tire size 48-50C

Note:

The recommendations are based on our rim-tire compatibility tests with some of the most popular tires. This chart only serves as a general guide as bead design, inflation pressures, and other variables will affect the actual rim-tire compatibility. Please send the rim profile to the tire manufacturer to double-check.

We don’t suggest choosing the largest and smallest values of a size range. For example, with a range from 25C to 30C, 28C is an optimal option for most riders.

The chart is only applicable to Light Bicycle rims with a specific rim-tire interface. If you use rims of other brands, please send a rim profile to the tire maker for recommendations.

FAT RIMS / TIRES

Internal rim width (mm) 55 60 65 70 75 80 85
Tire size 3.8 - 4.2"
Tire size 4.3 - 5.0"

Note:

The recommendations are based on our rim-tire compatibility tests with some of the most popular tires. This chart only serves as a general guide as bead design, inflation pressures, and other variables will affect the actual rim-tire compatibility. The chart data should be verified with the tire manufacturer.

We don’t suggest choosing the largest and smallest values of a recommended size range. For example, with a range from 4.3” to 5.0”, 4.7” is an optimal option for most riders.

The chart is only applicable to Light Bicycle rims with a specific rim-tire interface. If you use rims of other brands, please send rim profiles to the tire maker for recommendations.

Recently we have done some tests on tire width and weight and make them good blogs to help you choose the right tires for your bike quickly.

popular-bike-road-tire-actual-widths-measured-on-LB-carbon-rims.jpg
29-27.5-inch-bicycle-tires-actual-weights-vs-claimed-weights.jpg

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COMMENTS

K

Kevin 2020/09/07

Hello I’m buying a giant talon 3 2020 very soon it comes with 21mm rims stock with a 2.25 tire I’d really like to put a 2.4 tubeless set of tires on it would that work or 2.35 without any traction/ safety issues? Thanks


LightBicycle 2020/09/09

Hi Kevin, A 21mm internal rim can mount 2.3" tires max according to our experience. If you want to mount 2.4" tires, it would be best to contact Gaint's tech support. Thanks, Lightbicycle


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H

Harrizon 2020/09/04

Hi masters.. im confuse about the inner width of rim it has 27.4mm if it suit best for my 2.1" or 2.2" tires.. do I need to change my rims for my tires sir? Thank you..


LightBicycle 2020/09/04

Hi Sir, Yes, 27.4mm inner width rims/wheels are okay for 2.1" or 2.2" tires. Thanks, Lightbicycle


I

isma 2020/09/09

How about 30mm rim? Its a MTB but I want to install slick Continental Contact Urban 55-622 for road biking workout


LightBicycle 2020/09/10

Hi isma, Is the 30mm refers to the internal width? We do have some customers who use 30mm wide XC725 (MTB) for road bikes. he used 2.25" tires and turned out ok. You can check out his build from this page he posted. https://opencycle.com/view-bike?sid=25995 Thanks, Lightbicycle


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D

Daniel 2020/08/24

Hello I have a Roscoe 7 with 27.5+ and a 40mm inner rim, does it fit a 2.4" tire? Thank you very much


LightBicycle 2020/08/24

Hi Daniel, The 2.4" tire would be too narrow for a 40mm internal width rim according to our experience. Our recommended range goes above 2.8". But don't recommend running wider than 3.1". Thanks, Lightbicycle


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G

Gordon 2020/08/24

I have 27.5 x 1.95 tires on a Giant mtn bike. I am looking for studded snow tires & can’t find a corresponding size. Everything I see is 2.25 & up.


LightBicycle 2020/08/24

Hi Gordon, Can you be more specific about the bike you have? The model or rim spec? What is your rim or wheel inner width? Thanks, Lightbicycle


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M

Mick 2020/08/20

Hi, try to understand your bike. I have an MTB rim with a 17mm internal and it is not even in your list. Its a not too old Kona fully. It has 2.2” tires today so your table suggests that is possible starting at 20mm. Why would Kona put these on a 17mm rim out of the factory? Do I measure wrong?


LightBicycle 2020/08/21

Hi Mick, 2.2" tires would be too wide for a 19mm internal 700C rim. The chart is for general guiding, please don't consider it works for all tires on all rims made by different manufacturers. The chart is based on tests on Light Bicycle made rims. We usually recommend choosing the middle of the tire with a range just to be safe. For instance, if the range is 1.9"~2.2", 2.0 or 2.1" would be the sweet spot. If you are not sure, please send the rim profile of your rims to the tire manufacture to confirm the best tire width you should use. Thanks, Lightbicycle


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A

AMIR 2020/08/20

im gonna use 2.1 tire whats the best rim size for the tire it's hard to choose


LightBicycle 2020/08/21

Hi Sir, What kind of riding and terrain do you ride on? What's your weight? Are you running tubless or tube? Any plan to use tire stripe or tapes? What tire pressure do you use while riding? Thanks, Lightbicycle


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E

Eddie 2020/08/12

Hi i currently have a trek marlin 7 with Bontrager Connection, double-wall, 32-hole, 20mm width. My question is can i put a WTB CROSS BOSS 700X35C TCS LIGHT/F on it? Thank you


LightBicycle 2020/08/12

Hi Eddie, For 20mm inner wheel, it is okay to use 35C tire. Thanks, Lightbicycle 


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V

Vio 2020/08/07

Hi there, I currently ride a gravel bike with 700 x 40c tires on a 21mm inner width, 23mm depth rim and if it's possible I would like to know how skinny on the tires I could go, thank you in advance.


LightBicycle 2020/08/07

Hi Sir, Our recommendation tire range for 21mm internal rim is 25-43c. Since your rim is not from us, so we cannot be sure if you can run out of this range. Thanks, Lightbicycle


V

Vio 2020/08/09

Thank you


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C

Conor 2020/08/04

I have a Specialized Stumpjumper 29" 6Fattie. Currently I have 3" tires on 584x38mm wheels. Whats the thinnest tire I can mount? Thanks in advance!


LightBicycle 2020/08/05

Hi Conor, Is 38mm refer to the internal width of your 29er bike rims? If so, the narrowest tire we recommend is 2.8". Thanks, Lightbicycle


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A

Ashhar 2020/07/20

Hi, I have a mountain bike with a rim width of 21 mm that currently has a 2.2-inch tire. Your chart says that I can fit a 2.3-inch tire. Is this recommendation for any specific rim/tire or is it general? My rim is Giant GX03V 27.5", alloy, double-wall, 21mm inner width and the tire I want to put on is Maxxis Aggressor 2.3 inch tire. Can you please advise if it is okay to put on this tire? Thank you


LightBicycle 2020/07/21

Hi Ashhar, Our chart is not for any rim with 21mm internal width considering the rim bed design varies from factories. So many factors will affect the tire mounting performance, the bump, center channel depth, hook type, rim edge design, etc. We cannot vouch for other factories. If you want to be sure, pls contact the original manufacturer. So if you have a Light Bicycle made 21mm internal rim, we can tell you that 2.3" tires would fit ok. Thanks, Lightbicycle


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