On 2017-01-16 17:18, John B. wrote:
On Mon, 16 Jan 2017 11:03:04 -0800, Joerg
wrote:

On 2017-01-16 10:43, David Scheidt wrote:
Joerg wrote:

:Yup. Standard bicycle tubes are usually junk. Would you accept it if you
:had to pump up the tires of your car every two weeks? Yet most cyclists
:think this is "normal".

Automotive tires have a much lower ratio of surface area to volume
than bike tires. They're also run a lower pressure, for the most
part.


Truck tires are often operated around 50psi or higher. Like my MTB tires
are.

Have you ever tried to pick up a
truck tire"?


Yes.


A typical 45" truck tire, say a B.F. Goodrich 445/65R-22.5, weighs,
according to the manufacturer some 215 lbs. Standard operating
pressure is in the neighborhood of 120 psi.

Comparing bicycle tires with tires for other vehicles is, to say the
least, a bit silly.

Unless, of course you plan on a 600 lb. bicycle :-)


I meant for pickup trucks. You can get regular tires with a limited
pressure range or slightly more expensive commercial grade ones for much
higher pressure. They make a lot of sense if the truck is going to
operated under a lot of load or on rough turf. A neighbor had them on
his Dodge Dakota and IIRC they were rated at 75psi max. The Dakota is
not even a large pickup truck, more the size of a compact car.

[...]

--
Regards, Joerg

http://www.analogconsultants.com/