When it's raining super hard and I'm on hwy roads, I'll pop it into 4wd... I'd does help with hydroplaning, if it starts I throttle through it. Hydroplaning can happen when the wheels with no power spin slower causing a surfing effect. I've driven through some deep laying water in 4wd and the tires cut right through. Hwy curves seem ok in 4wd but when I'm slowing and sharp turns as well as stop and go turning, I pop it out of 4wd. It is not good on the drive trane to turn on asphalt. If you can feel resistance, you are doing damage. I like jeep 4wd on-the-fly for just those purposes. My 8th jeep and been driving like this for a long time with no problems.
How would 4WD help with hydroplaning? And when you start to hydroplane, why would you throttle through it as opposed to slowing down?
You are incorrect here. When in 4hi you can drive the Jeep at any speed you normally would. You can also make turns on roads as well. You might start getting the lurching of the Jeep if you are doing right hand turns at a light, but if following the curves of a road its completely safe to stay in 4wd even on dry pavement. There is simply not enough differential between the front and rear of Jeep for it to notice.
I have driven in patchy conditions on both a XJ and my JK. Never had a problem with staying in 4hi if the road suddenly goes dry for a little bit.
In the owners manual they recommend not switching into 4hi above I think 40 MPH but I have switched into it doing 50/60 before with no ill affects.
To the OP, the wider the tires you run the more you will get a pulling from hitting deep spots of water. Try hitting a patch in the road with 315's
No, that is incorrect.
From page 434 of the 2013 OM:
Driving in the 4H and 4L positions on hardsurfaced
roads will cause increased tire wear and damage
to the driveline components.
This is what most people need to understand:
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
I live in the lightening capitol of the world and everyday we have really bad thunderstorms during the summer months. I am an Auto Consultant, my own business, I had to drive 25miles to do a car deal on Fri. I had 275x70x18's put on my 10th Anniversary and if I hit any puddles or pools of water, it feels like I am going to lose control of the Jeep. I am used to driving my BMW X3 all wheel drive. I have been in the car business 33 yrs and actually didn't know I could drive at higher speeds in 4wd. What a world of difference in handling in the rain the 4wd made. So if you are ever in bad rains just put it in 4wd and it's a lot safer.
Originally Posted by surf4doc
I had very aggressive directional Michelins on the X3 and I put Nitto Terra Grappler All Terraine 275x70x18
Originally Posted by surf4doc;
Thank you Bill and I did go 70mph and yes it was raining hard all day and the roads were flooded. I understand the short wheel base and rear wheel drive and the larger wheels and tires but it was scarey when I felt like I was going to lose control.
Originally Posted by surf4doc
Excuse me!!!! I have been in the car bus for 33 yrs and I do understand how things work and I have owned probably 50 some cars,because I can, all kinds, all shapes, all configurations and I had a very very successful selling career for a long time. That's unusual for a FEMALE!!!!!!!! I had to know my products and how things worked.
I guessing you really don't know your products as well as you think. After 33 years of being in the car business and you don't seem to know what the affects of standing water will have on tires and traction. Here's a little reading for you http://www.tirerack.com/tires/tirete....jsp?techid=16.
As for the "Female" comment, I know a few of them that know more about cars and how they handle and drive, I'm thinking better than you do.
Got say it, 70 mpg in hard rain with roads flooding, REALLY????? Slow down, the life you save might be someone else.
I knew I shoulda taken that left turn at Albuquerque! - Bugs Bunny
Faster than 55 in 4wd-Hi sounds like a bad idea...and if you're needing 4wd that badly it's still probably not wise to be near 55. Just sayin...4wd is for messy situations where you don't get stuck. Not so you can speed home in bad weather conditions.