Bicycle TutorBicycle Tutor

Show off your bike!

Related video tutorials:
Bike vs. Car Tire Pressure
This is related to my last post, but I figured I should start a new one as it veers of topic.
I bought a Tire pressure gauge and I checked my car tire pressure and they all read between 29-31 PSI. The tires recommend no more than 45 PSI, while the car recommends to stay around 30 PSI. Which is fine.
But my bike tires simply read 75 PSI. Which is more than double what my car requires. So why is it that bike tires require higher level of pressure than my car tires?

I'm not that sure, but I think it has to do with volume. Car tires have a much larger volume and therefore don't hold as much pressure. Here's a similar discussion from bike forums that might shed more light.

Last question is it safe to pump up a bike with a compressed air machine? More specifically a compressed air machine which plugs into my car's cigarette lighter? Like this one here.
Air Compressor

Air compressors will work fine... just be sure to watch your pressure gauge so you don't over-inflate your tire.

Sounds good thanks Smile.


Possibly Related Threads...
Thread Author Replies Views Last Post
  Bike tire replacement michaelcogburn.c 1 4,203 02-16-2016, 11:12 PM
Last Post: DaveM
  Free permanent Bicycle flat repair: tire within a tire Ares 4 8,546 02-11-2015, 04:54 PM
Last Post: elmore leonard
  How Critical Of An Error Is This With My Bike Tire Replacement? straightbangin 4 5,994 02-09-2015, 04:31 PM
Last Post: straightbangin
  Low Pressure 27x1 1/4 tires garrett01 7 10,211 10-13-2014, 03:50 PM
Last Post: cny-man
  Gravel/road tire for a MTB bike bikemanfred 8 7,138 10-12-2013, 03:43 PM
Last Post: painkiller
  Tube deflates at rest but holds pressure while riding nutnelson 4 6,214 07-07-2013, 02:44 AM
Last Post: 1FJEF
  Tire Pressure Question stevetopbarnarna 3 7,114 03-26-2011, 06:48 PM
Last Post: nameused
  Tire pressure idea I came up with Larry H 6 9,530 10-03-2010, 03:52 AM
Last Post: 009jim
  Newbie w/air pressure question Bikeshrink 7 10,630 08-05-2010, 10:44 PM
Last Post: Bikeshrink
  Getting correct bike tire to replace old one ThorbenKowalski 9 25,675 07-28-2010, 12:34 PM
Last Post: Bill

Forum Jump:

ISSN 1918-3445 © Copyright 2007-2010 Bicycle Tutor / Privacy Policy / Created by Alex Ramon