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Just don't make any sense to screw with the tire pressure, I make sure they are correctly inflated and ride smart in all conditions. Spent quite a few days in the the rain over the past few years while touring and some of them pulling a trailer and never had any problems. My worst expeirience so far was on the Mackinaw bridge on the iron in the rain 2 up and pulling the trailer the bikes traction is already squirrely and my mind starts running damn it's a long way down the wife lets me know she dont like this, well it was a little hard to relax.
The hydroplaning formula is pretty simple. The speed (in knots because I'm an aviation guy) equals 9 times the square root of tire inflation pressure.
It actually takes very, very little water on the road surface to hydroplane. Keeping your tires properly maintained is a key step of removing the water away and not hydroplaning. If you have 40# psi, your hydroplane risk speed is 65.5 MPH.
In north Texas, I worry more about all the pot holes filled with tar that are slicker than ice as well as the first rain and the oil that raises to the surface. I've had my back end squirley once on me and it scared chit out of me.... Thought for sure I was going to dump it at 45.
Where in the world did you come up with that formula? I don't believe it. There's a lot more in play when hydroplaning occurs than tire pressure. What about the amount of water on the road, the width of the tire(s), the weight of the vehicle, the tread design of the tire(s), the speed of the vehicle, the surface condition of the road, etc., etc., etc.?
When riding and it starts raining I like to pull off for a bit and let the rain wash the oil off the road. The new rain loosens the oil that has accumulated and brings it to the surface. After a few minutes of steady rain it washes it away.
I would never let air out of my tires for riding in the rain though. Used to ride off road years ago and did some trials riding (all the rage in the late 60's) and we would ride low pressure tires to improve traction over the rocks.
I did learn one thing this past summer when riding out west that when the rain washes the sunblock into your eyes it burns like hell!
Yep and you'll be stopping then. Riding while blind is much worse than riding in the rain.
Its flippin stupid to let air out just for the rain, these bikes are made (and desigined) to ride in the rain and sunshine, keep the correct air pressure and ride it till the wheels fall off. Never heard of such non sense, whoever you heard that from, stop talking to them, lmao.....
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