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This Is Why We Make Wider Carbon Road Rims

The 23mm wide 700C carbon rims for road bike and cyclocross bike

Aligning a bicycle wheel also is called truing a wheel. Because the fibers around the spoke face of the rim are 100% intact, spoke tension is distributed more uniformly around the rim. This makes it easier to build a wheel with even tensions, as well as produce a higher quality wheelbuild that will require less maintenance down the road.

There is a trend in road bicycle wheels and triathlon wheels, they are becoming fat.There are many benefits for using wide rims.

First, you can use a wider tire at little-to-no aerodynamic penalty. When the rim width is more close to tire's width. This airflow tends to be smoother than the lightbulb shape of a wide tie- narow rim.

Why a wider tire is better? They reduce the risk of pinch flatting at given tire pressure.As well,you can use lower air pressure which absorbs more road shock, and reduce the rolling resistance. Wider tires tend tob have better grip on web or irregular road surface. In the past, road racers using 21mm tires at 150 psi (10 bar) for everyday usage. By 2012, we’ve seen nearly a universal adoption of 23 and 25mm tires by the Pro Peloton, at pressures from 90 to 115 pounds. Now, they often use up-to-28mm tires and even lower pressure.

Second, the wide rims improve handling or cornering.For example, suppose there is a 23mm tire. Mount this tire on both a 19mm wide and 23mm wide rim. The tire’s contact patch on the 19mm rim is long and narrow, and with the 23mm rim is short and wide (relatively). The wider rim increases air volume slightly, and makes the tire’s sidewalls more vertical. In theory, the tire casing has to deflect less to make the same size contact patch – easy enough.

Here is a chart of the road tire size that we recommend for various internal rim width. If your tire is not wide enough, you’re risking pinch flats and rim damage. If your tire is too wide, tire burping and poor stability are disturbing.

Please note, this chart only applies to LB road rims. We will update it when wider rims are introduced.

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 √

See the actual width of various tires on our rims and the ease of install here .

May 24th, 2013 | Light Bicycle

COMMENTS

L

Lukasz 2014/12/26

Hello Light-bicycle team, Could you tell me how thick is the bottom wall of the rim (38 mm, wider) - I'm refering to the wall where the nipple-holes are drilled. Is it possible to order rims with slightly bigger nipples wholes on the innter and outer si de of the rim? I would like to use your rims with the Spinergy 's PBO spokes where the nipples are a bit wider than the normal ones and to be able to true the wheels you need wider access to the nipples from the top of the rim.

Light-Bicycle 2014/12/29

Hello Lukasz, Thanks for your inquiry. The thickness of 38mm depth clincher rim’s bottom wall is 4mm. Also, we can manufacture the rims with slightly bigger spoke & nipple holes. What is the size of spokes & nipples hole you like? Then we can manufacture accordingly. RR38C02 (23mm wide 38mm clincher rim): 430 /-15, USD159/pcs Please find attached rim cross-section drawing. For rim weave, do you prefer 3k, 12k or UD? Matte or glossy? Front 20H/ rear 24H? Please find below link. http://www.flickr.com/photos/light-bicycle/sets/72157631432948364/detail/ Currently, we also have new wider and stronger 25mm wide U-shaped 35mm clincher rim. Do you like it? The price is USD163/pcs. Thanks, Light-bicycle

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B

Brian 2014/01/12

Hello- I am interested in building several wheels for track racing. I weigh 93kg and am racing in sprints and 1kilometer TT, as well as some general events. I would like to build both a set of deep dish (88mm) wheels as well as something more shallow like 35mm. I have available high-flange front hubs in 36, 28, 24, and 18 hole (mostly Suntour Superbe). I have two rear 36-hole high flange hubs, in Campagnolo and Superbe (I know how to lace a 24-hole rim to a 36-hole hub in 1 or 2-cross, not radial). I noticed that many of the carbon wheelset sold from China are all laced 2 or 3-cross (symmetric), no radial lacing. Is this because the radial patter would be to much stress on the carbon rim? I need to know if I can build a wheelset from your 88mm carbon rims with a radial pattern on the front (18, 24, or 28-spoke); The rear would be 24 spoke in either a 1or 2x/radia/, or symetric 1x/1x. For the second wheelset I would use the lower profile rim, with the same questions about acceptable spoke pattern. For these lower-profile (weaker) rims, I am willing to build a 1or 2x front wheel and 2x/2x symetric rear wheel. For the rims, I am interested in 23mm for the rears, and 20.8 for the fronts. Also, I am interested in the no-brake-track surfacing per the earlier person's comment. Lastly, I would like to know about any volume discount and combined shipping cost for such and order of several rims. Thanks. Brian

Light-Bicycle 2014/01/15

Hello sir, Thanks for your inquiry. Currently, we have 2 types 88mm rims of 20.8mm outer width and 23mm outer width. The 23mm rim is much stronger and their weights are almost the same. So, I recommend you order the rims both with 23mm wide. Is it OK for you? Please find the attached cross-section drawings & some pictures. Do you prefer clincher or tubular? For the rims(rear one with 24H), do you prefer UD, 3k or 12k? Matte or glossy? 24H for the front? It’s OK to manufacture your rims without braking track. For the front road rim, it’s usually with 20H. So, it’s more suitable for the radial. It’s OK to build the wheels with a radial lacing for the front(24H). For the 24H rear one, it’s OK to have the radial or 2 cross lacing. For the disc hubs, there are Nocatec D711 standard QR/D711-135mm standard QR. Is it OK for you? Thanks, Light-bicycle

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M

Marty 2013/09/13

What is the maximum weight capacity for these wheels? I am finding it really tough to find a road wheel that is strong enough to take my weight and maintain durability.

Light-Bicycle 2013/09/15

Hello Marty, Thanks for your inquiry. May i know your weight please? For our 23mm wide wheelset at 50mm deep or 60mm/88mm deep, they should be strong enough for your weight. Please find attached rim cross-section drawings. You can let us know your weight first. And do you ride aggressively? Thanks, Light-bicycle

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C

Chandra 2013/06/21

Nancy, I'm very interested in building the complete set with this 38mm deep rim. I sent inquiry emails before regarding custom logo design, etc but no response back. I want to get on with the order soon. Can you please help? Thanks.

Light-Bicycle 2013/06/21

Hello Chandra, Thanks for your inquiry. Sorry for the late reply, i have the graphic engineer making the graphic for you now. I will mail you soon. The graphic is for 650B rim. Correct? For 38mm rim with 23mm wide, do you like clincher or tubular? Thanks, Nancy

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E

Eric 2013/06/09

Hi, has anyone looked into if this 23mm rim could be run tubeless without using a rimstrip (ie tape only)? What is the cost of this wheelset with the novatec 711&712? Thanks

Light-Bicycle 2013/06/09

Hello Eric, Thanks for your inquiry. You like road rims that can be used tubeless, correct? We have 45mm U shape rim, it is tubeless compatible. And for 23mm road rims, if you like tubeless, you can let us know, then we can have your production line manufactured accordingly. Do you like 38mm/50mm/60mm/88mm deep? The price is diferent. The rims will be without brake track, and built with D711/D712 disc hub, correct? Thanks, Light-bicycle

E

Eric 2013/06/10

Nancy, I would be interested in the cost, weight and any other info available regarding the 45mm U set up with the novatec 711&712. Also I would not need a brake track on the rim. Thanks

Light-Bicycle 2013/06/13

Hello Eric, Thanks for your inquiry. You like road rims that can be used tubeless, correct? We have 45mm U shape rim, it is tubeless compatible. And for 23mm road rims, if you like tubeless, you can let us know, then we can have your production line manufactured accordingly. Do you like 38mm/50mm/60mm/88mm deep? The price is diferent. The rims will be without brake track, and built with D711/D712 disc hub, correct? Thanks, Light-bicycle

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S

Scotty 2013/06/07

Are these wider carbon rims in 38mm depth available, yet? This would make a great cyclocross disc wheelset. Thank you.

Light-Bicycle 2013/06/07

Hello Scotty, Currently, we can manufacture 38mm depth rims with 23mm width. Do you like clincher or tubular? Please find the attached cross-section drawings & some pictures. For the rims, do you like UD,3k or 12k? Matte or glossy? 24H, 28H or 32H? http://www.flickr.com/photos/light-bicycle/sets/72157631432948364/detail/ For the disc hubs, we have Novatec D711/D712(415g) for road rims. Is it OK for you? Are the rims without braking surface, right? For spokes, it is black bladed pillar psr x-tra 1420 aero (4.3g/pcs for 260mm) and red/black/blue pillar alloy light nipples. Which color do you prefer? Cheers, Light-bicycle

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See all 6 customer reviews>>

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