Tire Internal Operating Temperatures

[alta55rsv]

Hello:

 

I recently purchased a wireless Tire Pressure / Temperature Monitoring System for my '07 RSV which allows me to set alarms for low and high tire pressures and high internal temperature on each tire. I can set the pressure limits easily enough, but I don't know what the normal internal operating temperatures are for the front and rear tires.

 

Does anyone have any information in this regard? I've searched the Internet but nothing of value pops up.

 

Thanks in advance for any assistance provided.

 

Eric S.

"alta55rsv"

[Guest tx2sturgis]

Hello:

 

I recently purchased a wireless Tire Pressure / Temperature Monitoring System for my '07 RSV which allows me to set alarms for low and high tire pressures and high internal temperature on each tire. I can set the pressure limits easily enough, but I don't know what the normal internal operating temperatures are for the front and rear tires.

 

Does anyone have any information in this regard? I've searched the Internet but nothing of value pops up.

 

Thanks in advance for any assistance provided.

 

Eric S.

"alta55rsv"

 

This seems unusual, but hey, I'm willing to take a stab at this.

 

Assuming your tires are in good shape, properly inflated, and you take a ride for an hour on a hot day. I would guess...JUST A GUESS! that they might be at say, 150-175 degrees, give or take. This is assuming highway speeds, not neighbourhood low-speed putts.

 

In that case I would set the monitor at 180.

 

In the winter, the tires rarely get up to operating temps unless ridden for a while, so I'm guessing that normal temps for winter riding might be more like 100 to 120 degrees.

 

I will take a surface reading the next time I ride for awhile, with my little IR thermometer.

 

I'm curious: Do the sensors require dismounting the tires? Some of these monitors attach to the inside of the rim. Or do they monitor the internal temps from the valve stem cap?

 

 

 

 

Edited July 7, 2012 by tx2sturgis

[alta55rsv]

Hi Brian:

 

Thanks for the suggestion!

 

I found a complicated tire engineering article on the web which discussed racing bike tires, and about 180 - 200 degrees seemed to be typical. So, for street tires, under the conditions you presented, the temperature should be less but that`s as much as I can tell.

 

I will start with an initial setting of 160 on both tires and adjust according to trial and error. If I find values that seem to do the trick and are consistent, I`ll report them here. I`m not riding a lot at the moment, so it may take several weeks before I have something conclusive.

 

Very much appreciate your help!

 

Regards,

 

Eric S.

`alta55rsv`

[Guest tx2sturgis]

Well good luck, and dont forget to post something...I'm curious too.

 

I'm gonna add this: The front tire is normally gonna be a lot cooler than the rear tire, that is unless your riding aggressively and using a lot of front brake. Normally the front tire is just kinda coasting and also in a fresh flow of air.

 

 

The rear tire, which of course is carrying the majority of weight, has the entire engine output to transfer to the pavement, and is kinda blocked from receiving a direct blast of air.

 

 

I once responded on this website to a question about rear drive unit temps, and I guessed that the temps in there are over 200, maybe even 250. Some others said I was maybe half crazy, but I knew that drive unit gets HOT on the highway. Gear oil is designed to handle temps around 200-300 degrees, sometimes even up to 400 degrees for synthetics.

 

Well I took my little IR unit for a ride one hot afternoon, and stopped after an hour, and immediately dropped down and took a reading on the housing: 185 degrees, on the OUTSIDE.

 

I have to believe that the aluminum housing is cooling the oil some, but I'm willing to bet that the oil inside was closer to 220.

 

Which is good, because thats hot enough to boil off the water vapor that condenses as the unit cools. Same thing as the motor oil in the engine. It needs to get hotter than about 212 to boil off the water vapor, otherwise, as in short tripping, the oil can build up sludge and moisture, which doesnt get boiled off.

 

Anyway....maybe someday you can tell us what the temps are in those tires. Like I said...just curious.