Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon 3/24


Bike vs. Car Tire Pressure
#1
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?

  Reply
#2
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 <a href="http://www.bikeforums.net/showthread.php?t=448281">bike forums</a> that might shed more light.

  Reply
#3
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.
<img src="http://www.pumps-manufacturer.com/productsimages/CarAirCompressorMiniAirCompressorAirPump_44564.jpg" alt="Air Compressor" />

  Reply
#4
Air compressors will work fine... just be sure to watch your pressure gauge so you don't over-inflate your tire.

  Reply
#5
Sounds good thanks Smile.

  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Santini fluted frame
Today 07:44 AM
Where are you from and What is your favo...
Yesterday 11:43 PM
2007 Trek Pilot S.P.A. 5.2
Yesterday 07:06 PM
2010 Specialized Hardrock
03-26-2024 09:16 PM
1990 Specialized Rockhopper How to Fluff...
03-25-2024 07:05 PM
Thread busted on right pedal crank
03-24-2024 08:52 PM
Trek domane tyre
03-24-2024 05:48 PM
Modern rims crack at spoke holes
03-24-2024 05:32 PM
Cup & Cone — Simple & Durable or PITA & ...
03-24-2024 04:53 PM
Falling back
03-24-2024 04:45 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
21 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. GirishH
15 posts
no avatar 4. meamoantonio
15 posts
no avatar 5. Jesper
15 posts