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

Keaghan 2020/11/27

I have a bontrager race x lite rim that is 30mm deep, I need to know the inner rim diameter for what hub I get, I have the 280mm long spokes but I just need to make sure I have the right length spoke for the hub I get


LightBicycle 2020/11/27

Hi Keaghan, Hi Keaghan, Do you know the rim model that you have in hand? We will need the ERD and internal width. Also, if you can provide the hub measurements (from the manufacturer or hub model number). We can calculate the spoke length for you. Have a nice day! Lightbicycle


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M

Mark 2020/11/10

Can I run a 2.4 on a 40mm rim trek roscoe


LightBicycle 2020/11/10

Hi Mark, A 2.4" tire would be a bit narrow for a 40mm internal width bicycle rim carbon. I would suggest going up to 2.8". Thanks, Lightbicycle


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N

Nan 2020/11/03

How about a tire 2.1 in a 30.6 inner width rim? ( 27.5 MTB)


LightBicycle 2020/11/04

Hi Nan, 2.1" would be a bit narrow for a rim with 30.3mm according to our experience. We wouldn't recommend it. But also depends on the rim and tire you have. Which 27.5 er bike rim do you have on hands? Thanks, Lightbicycle


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D

Deen 2020/11/02

Emm hi there.. This is a really2 great place to learn about bicycle to be honest.. Here lies my confusion.. i am about to buy a carbon wheelset.. It has 19.6 mm inner diameter.. My question is, what is the widest tire can i fit into the wheelset.? Thank you in advance


LightBicycle 2020/11/03

Hi Deen, In our experience, 43c would be the widest tires for a 19.6mm internal width road rim. If it's an MTB rim, we recommend running under 2.2". But the best way to be sure is to contact the original manufacturer. Light Bicycle can only speak for the rims we make. On the other hand, Light Bicycle is keen to post more and more useful bike-related articles so you can make decisions easier. You can make a list for us if you want, we will arrange updates later on and send you emails for the updates. Thanks, Lightbicycle


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R

Robert 2020/10/28

I have a Schwinn S-25 full suspension MTB with 26" rims. The current tires are 26" x 1.50" road tires. I also have a set of tires that were on the bike when I bought it at a garage sale: 26" x 2.1" knobbies. I have converted it to an ebike, which makes it quite a bit heavier. I was wondering if I should mount wider tires to absorb some of the impacts of road riding. What size would be appropriate?


LightBicycle 2020/10/29

Hi Robert, What 26er rims do you have? If the rims are strong enough, you can use your old tires just ok. But, wider tires would help a bit. Only if the rim allows the width of 2.1". Thanks, Lightbicycle


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M

Michael 2020/10/26

I'm getti g a Motobecane road bike with 25 mm tires. Can I size up to 32 mm tires on same wheels?


LightBicycle 2020/10/27

Hi Michael, Do you know what the measurements of the rim internal width would be? Thanks, Lightbicycle


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R

Richard 2020/10/27

Hi. I have a 2019 BMC ALR01 Disc, I think the Wheels are Shimano RS170, it came with 700x25c Tires. I mostly ride on asphalt roads and I want to increase the Tire Width so I can lower the PSI for a smoother ride. Can my wheels accommodate a 700x28c Tire? Thanks, Richard


LightBicycle 2020/10/27

Hi Richard, What is your current road disc wheel inner width? Then we can check whether it is okay for 700*28C. Thanks, Lightbicycle


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R

Ronald 2020/10/25

Hi, I just bought a 2006 Giant Reign 1 which came with 2.1 tires on 22 x 559 rims (WTB dual duty). Can I safely run 2.3 or possibly even 2.5 tires ?? Thank you so much in advance !! Ron


LightBicycle 2020/10/26

Hi Ron, For a 22mm (inner width) rim, A 2.3" tire would be the widest we would recommend. This even might be too wide for the rim in some cases. So, I don't suggest you go up to 2.5in tires for this rim. I hope this helps. Thanks, Lightbicycle


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P

Paul 2020/10/20

I am running Maxxis Ikon 29x2.20 tires in my XC bike. I cannot decide between 25mm and 27mm internal width... Please advise. Thanks, Paul


LightBicycle 2020/10/22

Hi Paul, Both 25mm and 27mm internal rim XC 29er will fit ok for the 2.2" tire you are running. What would be your riding like? What's the terrain? Are you looking to get Light Bicycle carbon rims for these? Thanks, Lightbicycle


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G

Greg 2020/10/20

Hi, I have a focus jam2 6.8+,with 2.8 tyres, would like to fit a slightly skinner tyre , would a 2.6 be ok?


LightBicycle 2020/10/20

Hi Greg, 2.6in tires would be a bit narrow for a 40mm internal rim that Focus Jam2 6.8 plus bike have. Our recommendation would be to stay 2.8 inch. Do you like 29er plus or 27.5 plus? Thanks, Lightbicycle


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