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Tire Size Chart For Bicycle Rims

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

COMMENTS

E

Emerson 2022/05/25

Hi, I have Btwin Riverside 500 Hybrid Cycle, would you be able to help what would be the max tire width I can replace it with? I think i am currently having "28. Your response would be greatly appreciated. Thank you!


LightBicycle 2022/05/26

Hi Emerson, Thanks for reaching out! According to DECATHLON's official statement, the Riverside 500 Hybrid came with 38c tires. And the rim is 21-622, which usually indicates the internal width of the rim is 21mm. According to our experience (carbon rims), 25c-43c tires are compatible with a 21mm internal rim. I hope this can be your reference in a way. But given the fact that different factories design the interface differently, you might also want to check with DECATHLON directly to be certain. Thanks, Lightbicycle


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S

Steph 2022/03/10

Hi! Im having now a 27.5×2.4 for 31mm internal width and 29x2.5 for 35mm internal width, it's all ok?


LightBicycle 2022/03/11

Hi Steph, Yes, the tire sizes you choose are compatible with the rims 650B you have. Thanks, Lightbicycle


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B

Blaik 2022/02/03

Hi, I have a 2019 marlin 6 on the stock rims. I believe they are 20mm internal width. When I bought it it had 29x2.5 maxxis hookworm tyres, and I haven't had any issues so far. Do you think it is necessary to change out either the rims or tyres to be safe? (I haven't ridden the bike hard so far, but I plan to push a bit more in the future.)


LightBicycle 2022/02/03

Hi Lewis, ​For 29er 2.5" tires, it is better to use wider rims, like 29er inner width around 25mm to 28mm. Thanks, Lightbicycle


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M

Montaps 2022/01/22

I have a 24mm external rim width. Can I replace my 2.3 tires with a 2.5 or 2.6 new tires? If so, do I need to buy new tubes as well? Thanks.


LightBicycle 2022/01/22

Hi Montaps, What is your rim inner wdith? Thanks, Lightbicycle


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N

Neil 2021/12/04

Which fat bike wheel would you choose for a 4” Jumbo Jim? Currently have them on my 80mm wheels, seems odd to go narrower as the chart recommends… Thanks


LightBicycle 2021/12/04

Hi Neil, I would suggest a rim with an internal width of 60-65mm. Take reference to our fat bike rimcarbon RSNOW03, it's with 65mm external/60mm internal width. Thanks, Lightbicycle


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B

Boyko 2021/11/16

Hi.I have a Rockrider with a Sunringle Duroc 30 rim, can i fit a 27.5 x 3.0 on it ? Thanks, Boyko.


LightBicycle 2021/11/16

Hi Boyko, According to the measurements I found, the internal width of the Sunringle Duroc 30 rim is 26mm. Our recommendation tire for the rim would be 2.1"-2.7". So the 3.0" tire would be too wide to use. Thanks, Lightbicycle


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K

Kieran 2021/11/01

I have a trex 5 marlin 2021 with a 20mm rim, can i fit a 2.9x2.4 on it?


LightBicycle 2021/11/01

Hi Kieran, Thanks for reaching out! The 2.4" tire might be a bit too wide for a 20mm internal 29er bike rim. Our recommendation is 2.2“. Thanks, Lightbicycle


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R

Rohan 2021/07/07

I have a KHS Alite 1000 mtb with 559x17C rim, with internal rim width mentioned as 17C. & ETRTO Recommended Tire Section Width as 25mm-52mm. So in this case I can replace my tires with upto what width?


LightBicycle 2021/07/07

Hi Rohan, The fact that we don't have 17mm internal alloy rims. our recommendations might not be properly. I suggest you contact the rim maker Weinmann. Thanks, Lightbicycle


S

sood 2021/08/13

pls tell me tyre size 2.10 & tyre size 2.40 have how much weight difference…


LightBicycle 2021/08/14

Hi Sir, Thanks for reaching out! Which tire are you looking for? We don't sell tires, so cannot provide you the weights of tires. But if you have tire fitting questions, I will do my very best to help. Thanks, Lightbicycle


R

RBC 2021/10/14

Hi I have an Answer Atac MA, 15QR / X12, Tubeless-Ready wheelset on a 2016 cube stereo bike Couldnt find the wheel width to know if i can put wider tire on them... lets say 2.3-2.4 Is it possible?


LightBicycle 2021/10/14

Hi Sir, I am sorry to tell you that It would be very hard to be sure if the tires would work for the wheel if you don't know the inner width of the rim/wheel. Thanks, Lightbicycle


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M

Max 2021/10/13

Hi, I have a 17 mm internal width rim and I currently have a 2.35 tire on it. Is this bad for say?


LightBicycle 2021/10/13

Hi Max, Do you have any problem with the 2.35" tires on your 17mm internal rim so far? If not, it should be ok. Given the fact that rim design varies from manufacturers. So the chart is a tire guide for our product lineup. The tire range is the tires we recommend to gain the best performance and reduce risks given our carbon bike rim design. Thanks, Lightbicycle


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S

Shena 2021/07/28

Hii I have Firefox nuke29 it has 29*2.1 tires and alexrim double wall 32 h. 23mm can I put 2.3 or 2.4 tire size will they cause any problems in frame please reply fast


LightBicycle 2021/07/28

Hi Shena, Is it your current 29er wheels with 23mm inner width? If yes, it should be okay to fit 2.3" or 2.4" tires. You can double check your supplier. Thanks, Lightbicycle


S

Sheena 2021/07/28

My MTB frame size is 19 so will 29*2.4 will rub the frame or not


LightBicycle 2021/08/03

Hi Shena, Is it your current 29er wheels with 23mm inner width? If yes, it should be okay to fit 2.3" or 2.4" tires. You can double check your supplier. Thanks, Lightbicycle


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W

Wayne 2021/08/01

Will a 27.5" X2.0 fit a 27" road rim


LightBicycle 2021/08/02

Hi Wayne, 27.5" tires are with bigger BSD, so they might a bit bigger for 27" rims. So the tire beads might not fit well with the rim bead seats. You can check with your wheel 650B supplier. Thanks, Lightbicycle


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C

Charles 2021/07/30

I have 26x2.2" rims as listed by Specialized. Can I use a tire listed 1.75-2.125?


LightBicycle 2021/07/31

Hi Charles, What is your 26er bike wheel inner width? Then we can check for you accordingly. Thanks, Lightbicycle


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J

John 2021/07/06

I am building my own wheelset for a 26 mtb. I puchased tires Billy Bonkers 26×2.1 (559-54), I'm unsure of what the optimal rim size for this tire.


LightBicycle 2021/07/06

Hi John, The rim internal width we recommend for a 2.1" tire is 20mm-27mm. Note that the tire fitting capacity varies from manufactures. Thanks, Lightbicycle


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M

Marvin 2021/06/22

Hi lightbicycle, im just wondering can i use a 2.25 maxxis tire on a 29-30ish mm rims? Or rather can i run them safely mostly pavement and light trails..


LightBicycle 2021/06/22

Hi Marvin, 2.25" tires should be ok to mount on a 30mm internal width rim 29er rim bike. But if the 30mm means the external width, please remove the tire to measure the internal width to find the best-fit tire range. Thanks, Lightbicycle


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N

Nulz 2021/06/11

Hi Can maxxis aggressor 27.5 x 2.3 put to the wheel set etrto 584-21


LightBicycle 2021/06/11

Hi Nulz, Yes, you can use the 21mm 27.5er rim with a 2.3" tire. But it might be a bit wide. You should check with the rim manufacturer to be sure. Also, please make sure the frame clearance is enough. Thanks, Lightbicycle


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