How does Quadra Drive Compare to Select Trac on Snowy Roads? - JeepForum.com
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Unread Yesterday, 07:26 PM   #1
Jeepwalker1
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How does Quadra Drive Compare to Select Trac on Snowy Roads?

Hey all. First post.

Just picked up an 03 Overland. Wife's DD. Have had lots of GC's but with Select Trac. Here in WI we get lots of winter snow. For just country road driving when there is 3-4" of snow on the roads, would a Quadra Drive system stay mostly in 2wd? And if so, does that make it any more squirrely than a GC with Select Trac in 'Part Time' with the center diff locked? I'm talking about firm-footedness just cruising down the road at 30-40 mph, not trying to get unstuck from a ditch or something.

Would love to hear your experiences.

Thanks in advance

Jeepwalker

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Unread Yesterday, 07:40 PM   #2
Darnice
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Quadra Drive would be more stable than a locked center diff.
It can switch torque to the wheel with the most grip, in 1/2 a rotation.
With a locked center diff, torque is 50/50 front to back, even if the front has lost grip. That causes loss of control greater than Quadra drive that will sense the front end slip, reduce the torque to the front and thus keep better control. And the same if the rear should loose traction.

No 4wd system can overcome the limits of the conditions, driver prudence must always be for the conditions.
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Unread Yesterday, 08:43 PM   #3
99SK04GTX
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I own two 04 QD WJ's and also owned a 99 WJ with QD. QD is great in snowy conditions, I have never felt like I was going to spin out or lose control; drives like a champ
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Unread Yesterday, 09:06 PM   #4
fiveseven15
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good tires have a helluva lot to do with it as well
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Unread Yesterday, 10:22 PM   #5
fastfreddie
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Quote:
Originally Posted by Jeepwalker1 View Post
...would a Quadra Drive system stay mostly in 2wd?

Would love to hear your experiences.

Thanks in advance

Jeepwalker
IDK the torque split when you're just cruisin', but it is a full-time system.

I've had all four tires break loose in a straight line launching off a dead stop in the rain. Mind you, it was one of those intersections that gets a lot of traffic and the rain had just started.

Snow is the best. Pitch it sideways, modulate the go-fast pedal, it loves it!

...and, yeah, tires make all the difference.
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Unread Today, 12:35 AM   #6
losttech
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Never had quadra trac but my WJ felt like a snowmobile when I drove it in the snow this winter really stuck to the road.
Its a selectrac but I have nothing else to judge it by just that it worked good for me.
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Unread Today, 03:37 AM   #7
SuperDragpack
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QD would be your best bet:

1/ Automatically controls rear to front power distribution (it's almost instant - so no worries there)

2/ Both front and rear diffs are locking - so you will have all 4 wheels doing equal pulling in the snow.



I have always had QD V8's (as the V8 only comes with QD in the UK) and to be honest, it took all fun out of driving in the snow. It just didn't slip. It drove like normal - where is the fun in that!!!!!
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Unread Today, 03:52 AM   #8
Acc0919mc
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I like selec-trac because its more fun haha. I have never got my jeep stuck in even 2 wheel drive, and got my dads QD stuck in the mud i had just backed through in 2 wheel drive lol. I do wish i had the limited slip diffs though, that would be awesome. My mom has QDII and it has never let her down. Btw my dad has big beefy tire tread and i have Goodyear wrangler radials haha. But in your situation where your not going to need all 4 wheels turning all the time, i would go with QD and a nice set of tires
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Unread Today, 04:22 AM   #9
86cj74.2L
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15" of show driving at a sane speed feels no different that a wet parkinglot. Its a snowmobile with rubber tires.
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Unread Today, 04:36 AM   #10
gbaronetXCR
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QD is the bees knees. I originally got mine to pull my sleds. No drama, no wiggling, it's a cat on carpet.
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Unread Today, 07:35 AM   #11
86cj74.2L
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Quote:
Originally Posted by gbaronetXCR
QD is the bees knees. I originally got mine to pull my sleds. No drama, no wiggling, it's a cat on carpet.
Now that I've got the WJ I prefer it in snow for work over my Cummins.
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Unread Today, 07:39 AM   #12
dcorn
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You'll be fine. I went out in our snowstorms last winter and had a blast. The DC beltway was completely covered in a few inches of snow and I was perfectly comfortable doing 50mph. Also did some parking lot drifting, which was surprisingly fun even with the full time 4wd.
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Unread Today, 07:50 AM   #13
ezflip
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The thing with the 247 transfer case (used in QD and QTII) is that when it works, its a pretty good system. No input needed from the user to put it in 4wd which made it perfect for those soccer moms who don't understand 4x4s. The problem with though, is that response times get slow and often times they go completely unresponsive as they age and with lack of maintenance.

I have gone through 3. My first one was completely dead when I bought the jeep. I picked up a replacement from a junkyard with only like 40k miles on it, and it was very slow to respond. I was sideways well before the front tires got any power. So, I swapped to a 242 (selec-trac) transfer case. When I bought my Overland, it was also very slow to respond, faster than the other one, but still not fast enough. It only lasted 2 months before it completely died. So, I swapped that one to a 242.

Conclusion, if yours works as advertised, you should have no issues in snow. And its really just personal preference as to which system works "best" for you. Not considering the failed cases, I personally would still prefer the 242.
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