How Fast Do You Drive In The Rain?? How About,,,,,,,,,,

[mtgianni]

The National Aeronautics and Space Agency is testing car tires?

 

[ladder13]

Not rocket science.

 

[smoothshooter]

I think they maintain the same speed. Everyone around them slows down. The driver in a tractor trailer is usually above most of the road spray. His visibility is most likely better than yours. Nowadays most commmercial vehicles are governed at 65-69 mph. This explains why they get hung out in left lane and can’t get around another vehicle on a grade.

That occurred to me years ago, but how I know they drive faster is when I keep my speed the same, pacing one or more of them, we are all going the same speed. As soon as we all hit a really heavy rain squall, while I maintain the same speed, they start blowing past me. I have seen them do this repeatedly on I-40 between Little Rock and Memphis. I have seen groups of them, single file, inside lane, each one following the trailer ahead of it with only 20 to 30 feet of spacing, going an estimated 80 MPH in downpours so heavy that visibility was down to 50 feet or less ( and at night too ).

 

[stu1ritter]

The mandated tire pressures in Formula 1 tires suggest some problems with the basic concept in the OP. I don't recall exactly what those pressures are, but they definitely aren't 100+ PSI.

Depending on conditions/tire used, between 19 - 25 psi the max/min is set by the FIA, not the teams in conjunction with Pirelli, the tire maker.

Stu

 

[Rustyt1953]

I leave the PSI and traction stuff to my chauffeur.

 

[LVSteve]

Excuse me if I ignore the equivalent of a federally mandated warning label.
How can the auto manufacturer account for multiple tire brands with different specs?
I've gotten max mileage and handling by reducing the tire's max p.s.i. by 10%. YMMV

Don't get me started on the regular people and even mechanics who think the number on the side of the tire is the only one to go by.

 

[LVSteve]

That hot pavement releases a lot of oil when the rain first starts. Especially off ramps that see a lot of truck use. Slick as ice. Combine that with an exit ramp with a short approach, then a sharp, decreasing radius turn....

Larry

What is it with US road designers and their fixation with roads like that? There are two ON ramps locally that have the decreasing radius part just as you reach the merge lane. It's madness.

 

[jscheck]

All I know is, the next time I see some numb nuts driving with the hazard lights on in the rain and on the left lane of the highway doing 20mph under the speed limit I'm gonna show him what it's like to be the subject of a PIT maneuver.

 

[SweetMK]

Worked on aircraft for 20 years.
Never heard of a tire blowing up when being worked on.

I guess you never spent more than 7 minutes on YouTube surfing Pakistan repair videos??

 

[Oldengineer]

As stated above, the directional control of any motor vehicle is dependent on the “Tire Patch”. This is the physical contact of the tire with the road surface. Lose the tire patch and you might as well let go of the steering wheel because you are not in control. When it rains, the ability to maintain this contact is largely a function of the tire tread design and depth. Please recall driving behind someone in the rain —- those tracks you see is the expulsion of water. The slower you drive, the more time is available to push the water out. Racing in the rain is not done on slicks and dry racing isn’t done with treaded tires! When it’s raining, SLOW DOWN.


Tom H.

 

[Rustyt1953]

Proper tread is key.

 

[CH4]

I can say for sure those NASA guys have never driven in England.

lol
I’ll be driving there next week. I’ll bring my pressure gauge and conduct some tests. I think driving on the wrong side of the road will skew my results.

 

[Rustyt1953]

 

[jschmidt]

Driving in the rain has to do with displacement, the ability of the tire to channel water out from its tallest treads. You can drive well in excess of speed limits on good-quality all-season tires, faster on rain tires.

 

[Nevada Ed]

All the air pressure in the world;

will not help you, if you do not have good, deep , weather tread on your tires

in a heavy rain storm.

Been there, done that.

 

[rwsmith]

Planes that 'land' on carriers....

... have tires pumped up to 320 pounds plus.


Think if one of those 'let go' while working on it.

 

[Exaviator]

Forget the maths, just drive to the existing conditions...

 

[SMSgt]

Forget the maths, just drive to the existing conditions...

Guys like you ruin everything.