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Are these wheels pourous?

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Gusable:










Wow great info thanks so much!! I’ve got it cleaned up and spot faced the top of the hole. Waiting on bearings. I figured it was cast it should be tubeless but your right it doesn’t have the inner hump! Dammit. Tubes it is. Thanks so much

n3303j:
Inner hump is an interesting thing. My Lester wheels I added to my T3 are sold as tubeless rims by the manufacturer. Polished them up and they held air fine. No inner hump. Hump is better, but not necessary.

Everyone is running tubeless tires now (either with or without tubes) because that's what the manufacturers are producing. Very few casings marked TUBE only

So you get a flat on your tubeless tire (with a tube installed) and it will come off the rim exactly the same as if you were running that same tire without a tube. So nothing gained by adding a tube to the system.

Except that often a tube tire flat is a catastrophic failure where a puncture causes the tube to tear and dump the air quickly leaving you with that tire unsupported on that beadless rim.

Conversely a tubeless puncture is often not detected until you find the nail or screw during a wheel inspection.  Bike rides on, oblivious to the object in the thread. If it is a nail in a board that comes in, then out, the leak through the small hole gives you sufficient time to slow down and pull over for a roadside repair.

So you make your choice. Tubed or tubeless are both going to come off that rim the same if you loose air pressure. The installation with the tube will probably come off sooner and less warning.

.

TN Mark:
The wheels themselves are very likely not porous. But, cleaning off the tire rim surface is a big help.

Pro Tip 1: Use a small amount of 3M industrial grade sealant on the rubber washers when you replace the tire valve assembly. Do not reply just on getting the tire valve nuts and washers 'tight'. The sealant has worked perfectly on my bikes for many years.

Pro Tip 2: FOBO, TPMS has a T valve assembly available on their website. I use the FOBO 2 TPMS on my bikes and find it perfect. With their phone app I can check the tire psi before I even get ready to ride. As you ride, you can also monitor each tires psi and temperature. Plus you program in a +/- psi which will sound an alarm. I typically replace the small 1632 battery in each FOBO 2 sensor annually. There's no need to ride the bike to 'wake them up' either like some other systems. On my Victory I use three FOBO 2 sensors, both wheels plus the rear air/oil shock. Their T-Valve allows you to add air without removing the TPMS sensor.
Here's a link: https://my-fobo.com/product-family/FOBO_Bike_2

Gusable:
Thank you for all the replies. I am glanced at converting these wheels to tubeless for a few minutes before I went to bed that was about an hour.! I’m definitely going tubeless. I’m gonna go try to find some valvestems today that look like Curtis‘s valvestems. I don’t wanna wait 4-5 days. This bike is ready to hit the road! Thanks!

Vagrant:
NAPA 90-246 should work and if not in stock they usually can get it the same day. Dennis Kirk has some too but then there's freight.

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