I'm switching to road cycling. My diminutive and portable pump will likely be a pain to get 120psi. Rather than get a foot pump with either a built-in or an external pressure gauge, I'm thinking of simply getting a pump for car tires that doubles as bike tire pump.
Despite the brand of the model I'm considering, it doesn't actually include batteries.
I have two questions.
- Is this feasible? Can one fit a Presta valve on a pump such as the one pictured? A Presta valve is not listed among its paraphernalia. (I'm assuming the Schrader valve is identical on cars and bikes.)
The upper limit of pressure of the pump pictured is 120psi. This matches the needed pressure for the road bike tire. But it would have been nice if the pump were to exceed it ever so slightly.
- Would a pump rated at 120psi be sufficient for a tire needing 120psi? Or, conversely, is it a big deal if a road bike tire is inflated at only 115psi (because the upper limit is a theoretical, not actual, upper limit)?