GeneralTyre Pressure.?
Posted:

GeneralTyre Pressure.?Posted:

BPM
  • Winter 2016
Status: Offline
Joined: Sep 12, 201011Year Member
Posts: 7,227
Reputation Power: 1137
Status: Offline
Joined: Sep 12, 201011Year Member
Posts: 7,227
Reputation Power: 1137
Does the amount of fuel have an impact on Tyre pressure. Silly question but Ive been listening to the warning light for the last week or so about Tyre Pressure being low, tbf they were sitting around 26/27 PSI when they should be around 30/31.

Was going to get them sorted soon and noticed they are all back up to 30/31 again, I was running low fuel for a while and topped up the other day, but can't imagine that has an affect, although its the only think I've done.

Or is it just the sensors messing about. I have 0 knowledge on cars and just baffled. Maybe someone could shed some insight

Cheers.
#2. Posted:
Ryan
  • Rated Awesome
Status: Offline
Joined: Aug 30, 20183Year Member
Posts: 5,440
Reputation Power: 23632
Status: Offline
Joined: Aug 30, 20183Year Member
Posts: 5,440
Reputation Power: 23632
low Tyre pressure can affect the amount of fuel you use, (use more)

a full or empty tank of fuel will not make a difference to your psi as that is based on the air inside the tyres...

so if they are lower than the recommended front and back psi levels, put air in them!


Last edited by Ryan ; edited 1 time in total
#3. Posted:
Decoy
  • Rated Awesome
Status: Offline
Joined: Feb 13, 201110Year Member
Posts: 4,506
Reputation Power: 274
Status: Offline
Joined: Feb 13, 201110Year Member
Posts: 4,506
Reputation Power: 274
No Tire pressure changes with weather so it being cold then warm will change how much pressure will be in the tire.
#4. Posted:
BPM
  • E3 2018
Status: Offline
Joined: Sep 12, 201011Year Member
Posts: 7,227
Reputation Power: 1137
Status: Offline
Joined: Sep 12, 201011Year Member
Posts: 7,227
Reputation Power: 1137
Decoy wrote No Tire pressure changes with weather so it being cold then warm will change how much pressure will be in the tire.


Cheers. Didn't really know that.
#5. Posted:
002
  • Christmas!
Status: Offline
Joined: Sep 25, 20147Year Member
Posts: 4,763
Reputation Power: 366
Status: Offline
Joined: Sep 25, 20147Year Member
Posts: 4,763
Reputation Power: 366
The weight of a full tank of fuel will change the pressure, however you're talking about a fraction of PSI.

As said the weather is more likely the cause. If you fill your tires up when it's a nice warm 75* then it drops to below 30*, the air is more dense and therefore looses mass and you will see that in the form of lost tire pressure. Now when you start driving and the tires heat up with the friction from driving, you will notice your PSI increase.
#6. Posted:
Cvmmins
  • Christmas!
Status: Online
Joined: Mar 23, 20138Year Member
Posts: 305
Reputation Power: 14
Motto: Certified Master Automotive Technician
Motto: Certified Master Automotive Technician
Status: Online
Joined: Mar 23, 20138Year Member
Posts: 305
Reputation Power: 14
Motto: Certified Master Automotive Technician
^ 002 is spot on. If a car in parked (ex. overnight) temperatures will drop and it will have a lower tire pressure. Every 10 *F temperature drop will lower the Psi ~1-2 .
When you drive the car the tires heat up and therefore have a higher pressure.
Sounds like you are low on pressure still. Fill them up to 32-34PSI. Cheers
Users browsing this topic: None
Jump to:


RECENT POSTS

HOT TOPICS