Tire Air Pressure Readings on DIC

[hoosierdaddy]

I just got to know ;help does everyone have a variation in their tire pressure readings on the DIC and just how accurate are these, plus or minus a pound of two? :confused Mine varies from time to time and from front to back a pound of two and there are times that they may all show the same. I realize that driving it any distance at all the hot air will expand; I guess what I am asking is just how accurate are these readings? My left/right/front/rear will vary during driving on and hour trip or so back and forth a pound of two; is this normal?

Thanks,
Bill

 

[6 Shooter]

Mine are very accurate and they vary depending on length of trip and ambient temperature.

 

[redvett]

I just got to know ;help does everyone have a variation in their tire pressure readings on the DIC and just how accurate are these, plus or minus a pound of two? :confused Mine varies from time to time and from front to back a pound of two and there are times that they may all show the same. I realize that driving it any distance at all the hot air will expand; I guess what I am asking is just how accurate are these readings? My left/right/front/rear will vary during driving on and hour trip or so back and forth a pound of two; is this normal?

Thanks,
Bill

There will always be a variation in pressure since there are 4 sensors. I always use a digital guage to check all 4 tires and always have a pound or two difference by the sensors. Its normal.

 

[hoosierdaddy]

Thanks redvett and 6 Shooter, I didn't think a poound or two variation was anything to worry about. Mine might start out 28 psi and after a half hour of so of driving jump to 30-31 psi and there are times when they are all the same and other times the left rear and left front might read a pound or two lower than the other side. And then the next time they all start out the same; :crazy but never more than a pound or two difference.

By the redvette I see you have a 72LT-1, definently one of my all time favorites, did you ever post any pictures of it? Maybe I had ask you this before; if so sorry. . . . . Love that year, isn't it a 350/350?

Thanks again guys,
Bill

 

[cruzer99]

The tire pressure will change with outside air temp, road conditions, (concrete, asphalt, etc.), type of driving (in town or highway). My temps may start out at 28 and go to 33 on a hot day on the highway at 70 mph. My sensors are very close to what I read on the dic when I check them.
Hope this helps........

 

[Old Dog]

, Mine might start out 28 psi and after a half hour of so of driving jump to 30-31 psi and there are times when they are all the same and other times the left rear and left front might read a pound or two lower than the other side.

Mine does the same thing, it's normal. The heat from driving will bring
them up a little from a cold start. When the difference goes beyond
that margin, you may have a tire problem.

 

[hoosierdaddy]

Thanks cruzer82 and Old Dog, that is kind of what I thought. Just wandering what others got and how they reacted. Temperature I understand; also makes since whether asphault or concrete. I knew that cold and warmed up tires would espand and get a higher reading, but why some would react differant from others kind of had me :confused . Didn't think it was enough of a differance to be a problem but I was just wandering how accurate they were and what others thought about it.

Thanks again,
Bill

 

[cruzer99]

Your welcome Hoosier, it is a good question and I'm sure a lot of readers got good infomation from the answers.

 

[Patrick]

Mine are very accurate and they vary depending on length of trip and ambient temperature.

They will also vary depending upon the altitude you're at. When we started on our Colorado caravan to Cruisefest, we found that by the time we had stopped for night in Missouri, tire pressure had actually increased by as much as 4 or 5 PSI due to our coming downhill from the front range mountains in Colorado. It similarly decreased by the same amount the closer we got to 6,000 feet above sea level.

-Patrick

 

[hoosierdaddy]

They will also vary depending upon the altitude you're at. When we started on our Colorado caravan to Cruisefest, we found that by the time we had stopped for night in Missouri, tire pressure had actually increased by as much as 4 or 5 PSI due to our coming downhill from the front range mountains in Colorado. It similarly decreased by the same amount the closer we got to 6,000 feet above sea level.

-Patrick

That makes sense Patrick and I heard that altitude played a role in the reading as well. I also have wondered if run flats or not made a differance. I never thought mine varied enough to be a problem, just curious as to what others were experiencing.

Hope your doing well, missed seeing everyone at cruise fest this year.

Take care,
Bill

 

[Patrick]

That makes sense Patrick...

I hope it does, Bill! I got a PM from 6Shooter asking if I was implying you folks from sea level are "full of hot air." Perish the thought! :L

-Patrick

 

[hoosierdaddy]

I hope it does, Bill! I got a PM from 6Shooter asking if I was implying you folks from sea level are "full of hot air." Perish the thought! :L

-Patrick

Do you suppose run flats vary more or less than non-runflats or would there be no significant difference you think? Not going to comment on the "hot air being full or not". . . . . . :L

Bill

 

[Patrick]

Do you suppose run flats vary more or less than non-runflats or would there be no significant difference you think? Not going to comment on the "hot air being full or not". . . . . . :L

Bill

Bill, I'm no expert, but I'd have to think that when it comes to air pressure, there'd be little difference between how a run-flat and a non run-flat tire operate. The primary difference between them is in the construction of the sidewalls, and I can see how the density of the air inside the tire, given ambient conditions (temperature, altitude, humidity, etc) has anything to do with sidewall construction.


-Patrick

 

[hoosierdaddy]

Bill, I'm no expert, but I'd have to think that when it comes to air pressure, there'd be little difference between how a run-flat and a non run-flat tire operate. The primary difference between them is in the construction of the sidewalls, and I can see how the density of the air inside the tire, given ambient conditions (temperature, altitude, humidity, etc) has anything to do with sidewall construction.


-Patrick

Just curious Patrick, I wouldn't think so either. I have also had a problem with getting air in one of my tires using my air compressor at home and went to a body shop down the road and theirs worked. The only think I could figure was theirs was just a larger compressor and both more power and a larger storeage tank, you think?

Take care and have a happy 4th of July

Bill

 

[TorchRedC5]

I just got to know ;help does everyone have a variation in their tire pressure readings on the DIC and just how accurate are these, plus or minus a pound of two? :confused Mine varies from time to time and from front to back a pound of two and there are times that they may all show the same. I realize that driving it any distance at all the hot air will expand; I guess what I am asking is just how accurate are these readings? My left/right/front/rear will vary during driving on and hour trip or so back and forth a pound of two; is this normal?

Thanks,
Bill

Yes!...its normal

 

[hoosierdaddy]

All righty then; I think I've had enough of a response to say that it is as normal as normal gets.......

Take care and you all have a GREAT 4th OF JULY WEEK-END, be safe and healthy first and then have a great time.

Take care,
Bill