What's with this tire valve, and how is there air in the tire? Just purchased bike and noticed the fill valve is gone. Yes, this is the only hole in the rim, and I see no where to fill the tire with air. Seems to be about 25lbs. of air in tire.
too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
My first instinct was that someone broke off the valve when pumping it up, but since you feel some pressure, that's ruled out.
Likely this is one of those foam filled tires that get introduced as the latest and greatest every few years. You'll know for sure if you remove the tire and the tube feels like Italian sausage. If you can get it apart, you can replace the tube and be good to go, but know in advance that it's really hard removing these types of tires.
I never learned to ride a bike. It is my deepest shame.
My first guess is also that it is a non-pneumatic (foam filled) tire. I have never heard many good things about those - high drag and they feel weird... maybe they'd be appropriate for very short rides like for getting around in a warehouse or something, but most consider occasional flat tire repairs to the price of riding a bicycle.
it also might be that the stem was pushed in and is stuck inside, perhaps rotated to some location in the rim away from the valve hole caused by riding with low tire pressure. But I have never seen this happen that I can recall.
My first guess is also that it is a non-pneumatic (foam filled) tire. I have never heard many good things about those - high drag and they feel weird...
Well, there are tire inserts, and "solid" tires. The tires aren't foam filled as such, they're made out of the same foamed polyurethane throughout.
I've logged plenty of miles on such tires. On decent roads they're a non-issue entirely. On cobbles and when crossing lane markers at a shallow angle, they're a little squirrely, but nothing critical. There's a lot more shock transfer, so you get an immense rattle every time you go off a curb or so.
If you're riding on decent roads, and is used to 5+ bar pressures anyhow, the biggest issue I can think of is to figure out which tire and pressure equivalent to go for. No margin for adjustment after the purchase.
I wanted to try inserts made for sports wheel chairs, but the guys wouldn't sell me any, claiming that they were "too hard for bike use". Obviously absolutely clueless to what regular road bike pressures are.