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


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
Gandolfi "Super" model 1985-86 racing bi...
Today 01:10 PM
The great thing about trikes
Today 11:10 AM
Doctors are Prescribing Cycling
Today 10:40 AM
How to improve cycling endurance? I've h...
Yesterday 06:27 PM
Hot Weather Safety
Yesterday 06:05 PM
Variation in Conti GP5000 sizing?
Yesterday 05:42 PM
Budget Gravel Bikes - useful YouTube vid...
Yesterday 03:43 PM
Continued learnings from bikepacking
Yesterday 08:37 AM
Cleats idea. What do you think?
Yesterday 08:28 AM
Has anyone tried one of these portable e...
Yesterday 06:43 AM

[-]
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. GirishH
21 posts
no avatar 2. Flowrider
19 posts
no avatar 3. meamoantonio
13 posts
no avatar 4. rydabent
12 posts
no avatar 5. Jesper
11 posts