Most road bikes (that is, the ones with skinny tires) take 80 to 115 PSI. The difference is the vastly greater volume of car tires. A floor-type bike pump would take a lot of time and effort to fill a car tire and I would not want to do it! The frame mounted pumps would be a bad joke for a car tire.
for up to about 5psi to be added, I also use a bike pump.... its just faster than dragging out the 12v pump. And I keep a bike pump in my frunk.
I know this post is a bit old but wonder if you’re still having good luck with the Viair 85P. I got one recently and it worked perfectly the first time I used it. Topped up all four tires with no issues. Used it today to do the same and it would only stay on for about 10 seconds (at most) before shutting off. I presume it was tripping the virtual breaker in the car as it would work again a few minutes later only to trip again after a few seconds. I plugged it into my wife’s ICE car and it worked perfectly while I topped off all four of my tires and all four of hers. So it seems like it’s just an issue with my 2022 MSLR.
Yes, I've had problems with a Slime 12V tire inflator. I think it tripped the car's virtual circuit breaker which is rated for 12A continuous, 16A peak. Also the car can go to sleep. Once, the compressor tripped its own fuse.
Point taken, and why I chose this one. It uses the Dewalt 20v batteries, has a plug for the vehicle’s 12v system, and can use an optional 120v adapter. A fully-charged 20v battery has inflated two tires from 0 psi to operating pressure for me after plugging holes in them on another vehicle while still holding enough charge to top off 6 more tires. I would use the 12v plug only as a backup. Obviously, I keep the 20v battery topped off by swapping it out for a fully-charged one every month or so or after use.
Thanks for reminding me. I carry a Ryobi P747 in my trunk. Couldn't pass up a good deal a couple of years ago as I was already heavily invested into the Ryobi ONE+ ecosystem (saws, drills, shop vac, light, etc.). It sits there along with an old corded 12V compressor. I was out yesterday and noticed the low air pressure warning icon on the screen. All tires are now showing 32-33 psi, probably due to the colder weather.
Yes, it's still working great for me. Just a few weeks ago, I topped off all four tires in one go and had no issues with the pump whatsoever (it does get hot, though). It sounds like the pump was tripping the virtual breaker on your 12v for some reason. I wonder why your car's breaker would trip, but mine doesn't. It could be a difference in the car/breaker or the pump. One thing that is probably different between our cars is that my 12v is lead acid. Yours may be one of the new lithium 12v batteries. Perhaps the lithium 12v is babied a bit more???
I’m not sure either. First time it worked flawlessly. Second time it seemed to be tripping the “breaker” every time. Tried it again a third time and it worked flawlessly. Lol. Guess I’ll roll the dice if I ever need it out on the road. Thanks for your reply!
The published specs that I can find about the Viair 300P is that the motor voltage is 12V. Nothing about the maximum or minimum. If you have one of these I'd contact the manufacturer and inquire about a 16V input voltage.
