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Old 03-04-2005, 09:26 PM   #1
Stromski OP
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tire pressure cool down time?

Air pressure levels are always given for a "cold" tire. OK, but what if a compressor was not available before a ride and the nearest gas station is more than a few miles away?

How long does it take for a tire to return to cold pressure after it has been ridden? Time to pump five gallons of gas, time for lunch, over night...?
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Old 03-04-2005, 09:32 PM   #2
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A little off the question, but if you run the bike cold, warm up the tires and check your pressures, you should try to maintain a 10% increase in pressures. This number is what the tire is designed for and will provide the longest lasting and best performance out of the tire. Not to mention make airing up or down the tire much easier on the road.

EX. start at 30 psi cold 33psi warm
if the pressure rises above 33 add air, if the tire doesn't make it to 33psi remove air. outside temp will effect readings, but this is the old racers formula for longer lasting, proformance.
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Old 03-05-2005, 12:30 AM   #3
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Cool down times are affected by ambient & road surface temperatures & the tyre construction / compound itself. Lightweight sports tyres heat up & cool quickly. Sports touring tyres take longer to warm up but take longer to dissipate the heat. This is one of the reasons why you should be wary of running cut slicks on the road, they need to be kept up to temperature to maintain grip, can be difficult on the street.

As cjflyfisher said, aim for a 10% increase if adding air to a hot tyre.
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Old 03-05-2005, 03:14 AM   #4
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The best way to maintain your tire pressure is to buy a measuring device, they are not expensive.

Whenyou have been out riding an returning home, stop at the Gas station nearest to your home and raise the pressure a few PSI or 0,5 BAR.
Then ride home and park the bike.

Next time you want to go riding, first lower the pressure until the level you want.

This time you always have the best pressure, and a higher pressure is also better to for your tires when the bike is standing still for a few days/weeks .
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Old 03-05-2005, 05:52 AM   #5
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bridgestone says

Checking Tire Inflation

Check your tire air pressure at least once a week and before long trips. Be sure to use an accurate pressure gauge.
Check your air pressure when the tires are "cold." The tires are "cold" when your motorcycle has been ridden less than a mile at moderate speed or after being stopped for three or more hours.
If you must add air when your tires are hot, add four pounds per square inch (4 psi)(28 kPa) above the recommended cold inflation pressure. Recheck the inflation pressure when the tire is cold.
Never release air from a hot tire in order to reach the recommended cold tire pressure. Normal riding causes tires to run hotter and inflation pressure to increase. If you release air when your tires are hot, you may dangerously under inflate your tires.
If your tires lose more than two pounds per square inch (2 psi)(14 kPa) per month, the tire, the valve, or wheel may be damaged. Consult your local dealer for an inspection.
Use valve caps to keep valve cores clean, clear of debris and to help guard against air leakage.
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Old 03-05-2005, 06:44 AM   #6
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Disconnet the battery before adding air to the tires.
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Old 03-05-2005, 07:00 AM   #7
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I have done this for years, I thought every one did, maybe not.

Inflate your tire when cold, to the proper specs.

Go riding and really warm your tires up.

Take a pressure reading warm.

Make notes and keep it in an easy to read place (lable maker/dash board)

You now know what pressure the tires should be at warm (and cold)
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Old 03-05-2005, 08:02 AM   #8
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If you are not sure if the tires have reached operating temp, or if they are still in the cool range when you get to a compressor, let all the air out and refill with fresh air.
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Old 03-05-2005, 08:19 AM   #9
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Quote:
Originally Posted by Lone Rider
Disconnet the battery before adding air to the tires.
and don't forget to drain all the gas too.
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Old 03-05-2005, 08:31 AM   #10
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Quote:
Originally Posted by andmoon

....... refill with fresh air.
I make a habit of changing my air w/ every oil change. I use Mobil 1 Red Cap so I can extend my air changes a little bit.
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Old 03-05-2005, 09:16 AM   #11
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Quote:
Originally Posted by G.Kennedy
I make a habit of changing my air w/ every oil change. I use Mobil 1 Red Cap so I can extend my air changes a little bit.
The best deals on air can be found on the Internet.
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Old 03-05-2005, 09:41 AM   #12
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Laugh

Run nitrogen in your tires, won't heat up as much. Also takes the gas station out of the equation.
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Old 03-05-2005, 11:38 AM   #13
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Quote:
Originally Posted by NAVIGATOR
bridgestone says

Checking Tire Inflation


Check your air pressure when the tires are "cold." The tires are "cold" when your motorcycle has been ridden less than a mile at moderate speed or after being stopped for three or more hours.
If you must add air when your tires are hot, add four pounds per square inch (4 psi)(28 kPa) above the recommended cold inflation pressure. Recheck the inflation pressure when the tire is cold.
.
Thanks! The 3 hours wait or 4psi difference is what I was looking for.
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