Rear Drive vs. All-Wheel Drive: That Is the Question
For fun, we brought a rear-drive Infiniti G35 to our autocross and compared it with its all-wheel-drive G35x brother, in both wet and dry conditions with VDC yaw control switched off. We assumed the rear-driver would be quicker in the dry, given its ability to hang out its tail and help the driver tighten his line. But in the wet, we were confident the all-wheel-driver would have a tremendous advantage, hooking up better out of turns. Here's what we learned:
Well, we were wrong on one front, right on the other. Based on group average times on the dry autocross, the awd G35x proved itself faster, surprising us with its rear-biased manners and lapping nearly a second (0.9 sec.) quicker than the rear-drive G35. In the wet the G35x fared even better, 1.3 sec. quicker than the rear-drive G35.
Credit goes to the electronically controlled awd system, which maintains a rear-drive bias while endowing the car with improved stability. Don't get us wrong, the G35x still liked to hang its tail out, but the driver didn't need to be quite so careful with the throttle to keep the car's back end in check. In the rear-drive G35, the driver had to be far less aggressive with the throttle (and quicker with corrections) to post respectable times. Wet or dry, the awd G35x was far easier to drive quickly.
The G35x's center diff is responsible. From 0 to 10 mph, its electromagnetic wet clutch splits the torque 25 percent front/75 percent rear for good grip off the line; thereafter, the car is 100-percent rear drive until rear-wheel slip is sensed. Then, the diff can send as much as 50 percent of the power forward. Although other awd systems will produce different results, the G35x proves that all-wheel drive, properly applied, can give you the best of both worlds. — Andrew Bornhop
Audi used a "normal" configuration on their A6's IIRC.While not impossible to develop, it would be difficult given the car is a rear wheel drive car. AWD typically uses a transverse mounted engine and normally begins with a front wheel drive car.
And hopefully never. The Probe went down that path and thankfully clearer heads prevailed.

Invest in good snow tires.Wet, snow, and loose...if I go S550 it will be a daily driver. I live in Colorado and have plenty of slippery days.
http://www.roadandtrack.com/car-rev.../page-10---all-wheel-drive-sport-sedans#drive
But why?Hopefully none![]()
I've read that many of the rear biased AWD systems are actually better for crap drivers like me who will never see a track.Better question is why would you want one?
Doesn't help with cost, weight, complexity....
Thanks - very direct.
While not impossible to develop, it would be difficult given the car is a rear wheel drive car. AWD typically uses a transverse mounted engine and normally begins with a front wheel drive car.
And hopefully never. The Probe went down that path and thankfully clearer heads prevailed.
I'm curious why this sentiment exists among Pony/Muscle fanatics. If Ford is going global, most of the competing coupes have an AWD system *available*. Quattro, xDrive, and 4Matic come to mind here as well as the aforementioned Nissan/Infiniti platform. Sure they don't allow the option at the top tier (RS, M, AMG), but if there is going to be an Ecoboost 4 banger (that many insisted would never happen again) why wouldn't they offer AWD as well?Audi used a "normal" configuration on their A6's IIRC.
Also the G35x is powered by a VQ35 which is not transverse in lay out.
I hope they never even consider an AWD Mustang.
Stanger - I'd say get a beater Subaru Outback or some other 4WD/AWD vehicle w/snows for your Colorado winters and keep the S550 as your summer canyon carver.![]()
Thanks for the contribution.AWD Mustang for the lose :thumbdown:
I grew up in Colorado driving my '66 Mustang with studs and bags of sand in the trunk in the winter. I could get around easily, but it certainly had an impact on the fun factor.Invest in good snow tires.
In the Mustang's case, I'd say you can chalk it up to tradition. Why doesn't the M3 (or now the M4 in coupe guise) run AWD? Probably tradition...But why?
I've read that many of the rear biased AWD systems are actually better for crap drivers like me who will never see a track.
I'm curious why this sentiment exists among Pony/Muscle fanatics. If Ford is going global, most of the competing coupes have an AWD system *available*. Quattro, xDrive, and 4Matic come to mind here as well as the aforementioned Nissan/Infiniti platform. Sure they don't allow the option at the top tier (RS, M, AMG), but if there is going to be an Ecoboost 4 banger (that many insisted would never happen again) why wouldn't they offer AWD as well?
I've done a fair amount of reading about AWD vs RWD, but most of it is related to track testing. I'll never hit the track, and from what I've read poor/inexperienced drivers (like me) perform better when carving canyons if they are in an AWD setup and push out of corners.
Also, while the new NSX is not going to happen for me, I'm interested in why Acura would put their SH-AWD in a supercar type model that will tip $120k if it provides an inferior experience.
This is logical. Thanks!irregardless as too how much sense it makes in the parts of the world that have snow, I can not foresee a situation in which the mustang is AWD. Too much cost to develop. Ford does not have a RWD based AWD system for cars, all they have is systems based on FWD cars.
Ok, so it isn't necessarily that AWD would be "worse", but just may not suit the taste of the manufacturer/engineer/driver. Got it.In the Mustang's case, I'd say you can chalk it up to tradition. Why doesn't the M3 (or now the M4 in coupe guise) run AWD? Probably tradition...
AWD doesn't provide an "inferior" experience. It offers a different experience.
I have two SUVs for inclement weather (Touareg & MDX). As I probably wouldn't go all out with a GT500/GT350/etc, I'm shopping against numerous coupes that do have AWD, albeit not in the blown out models (M/RS/AMG/etc).I live in Canada. AWD is excellent but doesn't fit the Mustang in my mind. Get a Fusion if you need to drive in inclement weather. Nothing cheapens the Mustang brand more for me than seeing the steel rims and studded tires touring around with stupid amounts of spinning and oversteer. This car shouldn't try to be all things to all people.
No AWD.
:clap2:In the Mustang's case, I'd say you can chalk it up to tradition. Why doesn't the M3 (or now the M4 in coupe guise) run AWD? Probably tradition...
AWD doesn't provide an "inferior" experience. It offers a different experience.