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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

Tire Size Rim
Width (Inner)
1.9" 2.0" 2.1" 2.2" 2.3" 2.4" 2.5" 2.6" 2.7" 2.8"
(Plus)
2.9"
(Plus)
3.0"
(Plus)
3.1"
(Plus)
19mm
1.9 - 2.1"
20mm
1.9 - 2.2"
21-22mm
1.9 - 2.3"
23mm
1.9 - 2.4"
24mm
2.0 - 2.4"
25-28mm
2.1 - 2.7"
29-30mm
2.2 - 2.7"
31-33mm
2.3 - 3.1"(Plus)
34mm
2.4 - 3.1"(Plus)
35-39mm
2.5 - 3.1"(Plus)
40-50mm
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

Tire Size Rim
Width (Inner)
23-25C 25-28C 28-30C 30-33C 33-35C 35-38C 38-40C 40-43C 43-45C 45-48C 48-50C
17 - 19mm
23 - 38C
20 - 21mm
25 - 43C
22 - 23mm
25 - 48C
24 - 25mm
28 - 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

Tire Size Rim
Width (Inner)
3.8 - 4.2" 4.3 - 5.0"
55 - 65mm
3.8 - 5.0"
70 - 85mm
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.

COMMENTS

W

William 2022/09/26

Hi, recently I inherited a 2002 Olpran Spirit bike (from their trekking line) from my father in law, which has 28" tires, 40-622 aka 28x1.5 aka 700x38c. The external rim width is 26mm and internal 20mm. Can I put there 700x50c aka 28x2.00 tires ? (there is enough clearance front and back) According to your mtb chart yes, according to the road chart no, but this is more of a trekking bike.


LightBicycle 2022/09/27

Hi Sir, Yes, MTB tires and road tires are designed differently. You can use 2.2" MTB tires on a 20mm inner width rim. But if you plan to run higher pressure than 40/50psi, MTB tires won't be able to hold it. So if your father in-law prefer to run with high pressure, and mostly on smooth roads. Road tires would be more suitable. But, the tire width is limited. We recommend the widest 43c. Thanks, Lightbicycle


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T

Tim 2022/09/19

You never clarify whether you're talking about the inner width or the outer width of the rims.


LightBicycle 2022/09/20

Hi Tim, The internal width is what matters when it comes to installation and tire fitting. You can see the heading of the chart is "internal rim width". We want to make improvement as we can. So if it would be greatly appreciated if you can share your option regarding improvement of this page, or the whole site. Thanks, Lightbicycle


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A

Adam 2022/08/15

Hello, I enjoyed this article. I am dealing with some older tech on my 2012 XC MTB. I have Easton EA90XC rims that are 19mm width. The manufacturer rates tire width up to 2.3inches. I was hoping to get a 2.3 trail tire on the front and a 2.2 XC tire on the rear. Assuming clearance, does that seem workable? Thank you


LightBicycle 2022/08/15

Hi Adam, Yes, you can use 2.3 inch tire font the front and 2.2 inch tire on the back since this is within the manufacture's recommendation. Thanks, Lightbicycle


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N

Neil 2022/06/10

Hi I'm planning to buy a rim that has a 27mm internal rim width and 33 external rim width, my tire is 26 x 2.25 do you think that it is ok or not?


LightBicycle 2022/06/11

Hi Neil, For our 26er bike rim RM26C03 26", 27mm/33mm width, recommend 2.1"-2.7" tire. So, 2.25" tire can work for this rim 26er bike. Thanks, Lightbicycle


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D

Denny 2022/06/08

Looking for a wheelset for a 29r Specialized Turbo SL road ebike. 12x110 boost front and a 12x148 Boost rear. both under23mm(or close) inner width. 6 bolt disc I use 28 mm tires


LightBicycle 2022/06/09

Hi Denny, We could use end caps to convert DT 350 15*110mm boost to 12*110mm boost for 29er mountain bike wheelset. Is it okay for you? Thanks, Lightbicycle


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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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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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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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