tire and wheel temperatures

[mbrower]

I just returned from Myrtle beach and had something strange happen on the way back. I normally travel at night when the temperatures and traffic are lighter but this trip, I left in the afternoon. The door side tire temperature was running about 10 degrees hotter that the curb side tires, which is normal and I always thought it was due to the crown of the road placing more weight on those two tires. Never concerned me.

This trip I was in a lot of traffic with a lot of red lights and stop and go driving. Tires on the door side was about 20 degrees hotter than the curb side and then the front door side tire started rising significantly, 40 degrees within about 20 minutes of driving. We were about to get on the interstate so I decided to stop for fuel and grab a quick bite.

The front door side wheel was extremely hot and much hotter than the other wheels when comparing by feel.

everything was pointing to a dragging brake or wheel bearing. I decided to let everything cool off and jack the wheel up to make some quick checks. To my surprise, everything checked out fine.

I decided to continue and if temperature rises again to pull over and do a much thorough inspection. The rest of the trip home the front tire never got more than 2 degrees different than the rear tire. about 5 hours of traveling.

The only thing I can think of, is the exhaust from the truck was hotter than normal from the traffic and was blowing back on the tire and wheel making it hot.

just wondering what some of your thoughts are?

[laknox]

ken burke wrote:
lyle

I thought about that years ago, when first learning about tire temps. I thought it would be cool to have a NACA duct in front of the wheel well to suck air in to help cool the tires/hubs. Then the juices got flowing while watching a short-track NASCAR race, where the cars were spraying water into the brake cooling ducts. Why not do something similar with my FW's tires? Every 15 minutes, or so, have a mister turn on and spray directly onto the tires for about a minute. Just plumb into the fresh water tank. Yeah, your wheels would probably look pretty cr@ppy after a while with salts, but you must might save a child, er, TIRE! 🙂

Lyle
Lyle . . . . good idea You may not want an auto system to spray tires, but a manual one. I would use it when the exhaust was in reguneration.
I am going to try to reposition my trucks exhaust away from the trailer tire.



Hell, put a temp sensor in the wheel well and, when it trips, have the sprayer turn on. 🙂

Lyle

[blofgren]

Me Again wrote:
Over the years of shooting tires with an infrared heat gun I have found that with good trailer tires, think Ribs and R250's, that the rear axle runs a little warmer than the front axle. I racked it up to the front ones in clear air and the rear ones hidden behind the fronts.

Ah, I've noticed this with my current trailer and was wondering why this was. I think you're correct, thanks! :B

[ken_burke]

lyle I thought about that years ago, when first learning about tire temps. I thought it would be cool to have a NACA duct in front of the wheel well to suck air in to help cool the tires/hubs. Then the juices got flowing while watching a short-track NASCAR race, where the cars were spraying water into the brake cooling ducts. Why not do something similar with my FW's tires? Every 15 minutes, or so, have a mister turn on and spray directly onto the tires for about a minute. Just plumb into the fresh water tank. Yeah, your wheels would probably look pretty cr@ppy after a while with salts, but you must might save a child, er, TIRE! 🙂

Lyle
Lyle . . . . good idea You may not want an auto system to spray tires, but a manual one. I would use it when the exhaust was in reguneration.
I am going to try to reposition my trucks exhaust away from the trailer tire.

[ken_burke]

larry barnhart wrote:
Cummins12v98 With all of the products we all have for rving how can a waste of money not be included in most of the fun thing's we all buy. I am guilty but just like stuff. I do like our TST for our small home.

chevman

I agree. I have a tire pressure/temp monitor on my 5th wheel tires. I would not leave home without it. I have had my share of tire blowouts. I now have good GY640 or whatever they are called. Our trailer is really heavy (about 15,000#s). The rear tire behind the exhaust gets really hot.

[tinner12002]

My curb side tires always run about 10 degrees warmer than street side. Sounds like to me your front brake may have been dragging some...too far from truck exhaust to have a problem there.

[larry_barnhart]

Cummins12v98 With all of the products we all have for rving how can a waste of money not be included in most of the fun thing's we all buy. I am guilty but just like stuff. I do like our TST for our small home.

chevman

[Cummins12V98]

Run good QUALITY tires and don't fret it! I don't waste my time or money on monitors on my GY "H" tires as the ONLY problem I have ever read about was the loss of the center section of tread and the tires did not loose pressure. I am running mine at near capacity.

[laknox]

ken burke wrote:

Dayle1 wrote:
More likely the exhaust in spite of other comments. I have internal sensors on my trailer so they are insensitive to sun and wind effects. And in spite of the distance the ones behind the exhaust are always hotter with the front trailer tire hotter than the rear. But it also depends on which side your exhaust is at, mine is curb side, or with dual exhaust depends on wind direction. When I searched this issue I found one owner that had melted plastic trim at the lower corner of the fiver when towing during a regen cycle. I don't think a 10 degree diff really matters, worst case maybe rotate tires side to side.

Wow. That explanes a lot. Thanks!! My right front trailer tire is always hotter than the other tires. The pressure is also higher. I never thought about the hot exhaust (from ford diesel) as being the problem. I am now sure that it is true. If I had a brain in my head I would have figured it out! When you stand aft of the exhaust it is really hot. During the regen process the exhaust gases get up to 1200 deg F. Once I had a left front trailer blow out.
There must be some way to cool the tire. Put in a vent scoop?
At least it is another thing to think about.
ken

I thought about that years ago, when first learning about tire temps. I thought it would be cool to have a NACA duct in front of the wheel well to suck air in to help cool the tires/hubs. Then the juices got flowing while watching a short-track NASCAR race, where the cars were spraying water into the brake cooling ducts. Why not do something similar with my FW's tires? Every 15 minutes, or so, have a mister turn on and spray directly onto the tires for about a minute. Just plumb into the fresh water tank. Yeah, your wheels would probably look pretty cr@ppy after a while with salts, but you must might save a child, er, TIRE! 🙂

Lyle

[avvidclif1]

My exhaust exits out the side on the right. It is abt 20' to the first trailer tire. No way is that heat getting to the tire. No diesel soot on the trailer anywhere....The difference in tire temp that I see is caused by the position of the sun and it's only 2-3 degrees

[Me_Again]

Over the years of shooting tires with an infrared heat gun I have found that with good trailer tires, think Ribs and R250's, that the rear axle runs a little warmer than the front axle. I racked it up to the front ones in clear air and the rear ones hidden behind the fronts.

Phoenix to Palm Springs with strong wind out of the South had the shaded tires running hotter than the ones in the sun, because of the extra load the wind created.

[ken_burke]

Dayle1 wrote:
More likely the exhaust in spite of other comments. I have internal sensors on my trailer so they are insensitive to sun and wind effects. And in spite of the distance the ones behind the exhaust are always hotter with the front trailer tire hotter than the rear. But it also depends on which side your exhaust is at, mine is curb side, or with dual exhaust depends on wind direction. When I searched this issue I found one owner that had melted plastic trim at the lower corner of the fiver when towing during a regen cycle. I don't think a 10 degree diff really matters, worst case maybe rotate tires side to side.

Wow. That explanes a lot. Thanks!! My right front trailer tire is always hotter than the other tires. The pressure is also higher. I never thought about the hot exhaust (from ford diesel) as being the problem. I am now sure that it is true. If I had a brain in my head I would have figured it out! When you stand aft of the exhaust it is really hot. During the regen process the exhaust gases get up to 1200 deg F. Once I had a left front trailer blow out.
There must be some way to cool the tire. Put in a vent scoop?
At least it is another thing to think about.
ken

[pianotuna]

Hi,

I find my inside dual's hotter than the outside ones.

[JIMNLIN]

Dragging/incorrectly adjusted brake shoe/pad with that wheel with all the extra braking events.

[mbrower]

Cummins12V98 wrote:
"The door side tire temperature was running about 10 degrees hotter that the curb side"

I thought the door side and curb side were one in the same???

I think you're right LOL! I wrote that early this morning.

My exhaust blows straight out the back and it has melted my sewer hose 5X5 storage box (fence post). When I replaced it, I installed a deflector on it to try and route some of the exhaust around it but its starting to melt again. I know the exhaust is very hot while towing. I think I'm going to have an exhaust shop modify the outlet so it blows more out the side.