Originally Posted by
AndersMN
I just keep the adaptor on the valve. Car tires may need lower PSI, but keep in mind the great weight atop them. Those compressors are definitely sufficient.
I'm not a scientist, but I'm pretty sure 50psi is 50psi, regardless of whether you're lifting 20 pounds or 2000 pounds.
If the gas station pumps don't go above a certain PSI, I doubt they'll work.
For the OP - Presta valves are typically on higher-end bicycle tubes. I prefer them.