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)

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

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"

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

A

AD 2020/05/28

I inherited a Thruster fixed gear bike with the tire size 700x38c. I need to replace the wheels. I like the versatility of the tire size, but also like the look of the deep profile wheels (but those are more narrow). What’s the best wheel for my tire size? Is there a deep profile option for that tire size?


LightBicycle 2020/05/28

Hi Sir, Since you prefer a deeper rim, I would say our AR56 (30mm wide, 56mm deep) road rim would be a good option. Will you confirm to me if your frame spacing is enough for the 30mm rim? Thanks, Lightbicycle


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J

James 2020/05/25

I have a 29" mtb rim with a 25mm inner rim width. I am looking at putting some fast tyres on that are slightly off road capable. If I went 700c tyres what would the biggest and smallest size, 30c - 40c? And if I went 29" tyres what would be the biggest and smallest size, 1.75"-2.25"? Eyeing up the Schwalbe G One all round 57-622 (29 x 2.25), will that fit? Many Thanks


LightBicycle 2020/05/26

Hi James, If you go with 700c road tires, the range is 28-50c. If you go with 29er tires, the range is 2.1"~2.7". Note that the tire range works best for Light Bicycle rims, you can only take it as a reference if you are mounting with rims made/designed by other manufacturers. Thanks, Lightbicycle


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A

Anja 2020/05/19

Hi. What inner rim width would you recommend for bikepacking rim if I want ro be able to fit 27,5x2.1 tires and also 27,5x.2.8 tire. Would this maybe be possible with innercrim width of 25mm or 30mm? I am looking for the best, versatile option. Thanks for your answer. Anja


LightBicycle 2020/05/20

Hi Anja, According to our experience with tires (mount on LB rims), you should have 2 different width rim to fit with 27.5/650b*2.1" and 2.8". The range is too wide. 25mm inner width rim is a bit narrow for 2.8" tires. Thanks, Lightbicycle


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S

Sebastien 2020/05/04

would a 2.4 work on a 35mm rim?


LightBicycle 2020/05/04

Hi Sebastien, In the Light Bicycle rim case, a 2.4inch tire would be too narrow for a 35mm internal width rim. Our recommended range is 2.5~3.1". The fitting and riding would be at the best performance. But the actual fitting depends on which tire and rim you are using. The fitting is quite complicated because of different manufacturing and design standards. It should be okay to use 2.4' tires on 35mm inner bike rims. Thanks, Lightbicycle


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C

Catz 2020/04/22

Hello, I want to go tubeless and put 2.4” tires on a 23mm internal rim. Or do you think sticking to 2.3” would be better?


LightBicycle 2020/04/22

Hi Sir, For 23mm internal rim width, it is okay to use 2.4" if you like. But 2.3" tire will work better on this bike wheel size. Thanks, Lightbicycle


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G

G-long 2020/04/15

Hi Sir,can Continental RaceKing 2.0 not tubeless ready tires is fit in 27.4 rim inner width rims.Thank You


LightBicycle 2020/04/15

Hi Sir, Continental RaceKing 2.0" tires would be too narrow for a 27.4mm internal width rim, ​ we suggest using at least 2.1" tires. Thanks, Lightbicycle


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A

Anthony 2020/03/22

Would 20x2.4 tires fit on my 20 inch rims


LightBicycle 2020/03/23

Hi Anthony, Do you know the internal width of your 20inch BMX rim? The tire fitting depends on the internal width your rims have. You can either confirm it with the manufacturer or measure it yourself. Thanks, Lightbicycle


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G

Glong 2020/03/15

can i use 32mm width rim to 2.0 tire or 2.1


LightBicycle 2020/03/16

Hi Glong, If the 32mm width you mentioned is the internal width of the rim, then a 2.0-inch tire or a 2.1 inch tire would be too narrow to fit the rim. Our recommendation would be 2.3"~3.0". We would recommend running 2.0"/2.1" tires on rims with a 19mm~27mm internal width. But the actual fitting will depend on the tire you choose, with tube or tubeless? With rim stripe or tape? Thick tire bead or thin bead? Thanks, Lightbicycle


G

Glong 2020/03/26

can i fit 2.0 tires for 28mm rims


LightBicycle 2020/03/27

Hi Sir, Does the 28mm refer to the internal width of your rim? If so, a 2.0inch tire would be too narrow to fit. If it's the external width, can you possible get the internal width so I can make a recommendation accordingly? Thanks, Lightbicycle


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W

Wayne 2020/03/06

I brought a Korean cargo bicycle home from S. Korea and when I ordered a 26" front tire as the front tire was marked on the sidewall, the replacement tire arrived but it is slightly too large in diameter. I was able to slide the replacement tire over the rim without the usual stretch. Once air entered, portions of the tire escaped the rim. Why was a 26" original tire different than the one I ordered? Wayne Seelig


LightBicycle 2020/03/06

Hi Wayne, First of all, are you using a Light Bicycle rim? Have you consulted the tire size with the tire manufacturer? Thanks, Lightbicycle


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M

Marc 2020/02/26

I have a 29" Stout XC SL Rim, 21mm internal width with 2.1" dia tires. What would you recommend as my max tire size?


LightBicycle 2020/02/27

Hi Marc, The tire sizing chart works best for LB bike rims as rims from different manufacturers design differently. For a 21mm internal width rim, the widest tire we would recommend is 2.3". But the fitting also affected by the tire itself, some bead of tires are too thick to fit in narrow rims. The best solution is also consulting the tire manufacturer. Thanks, Lightbicycle


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