RWD Hard Acceleration

[Berzerker]

My AWD GT doesnt "hunch" down in the rear when launching from a dead stop which is a completely different experience I've had with my prevuous RWD cars so my sense is that there is definitely front wheel pull at launch and when rolling ........someone will figure it out ! all good

Well it's exactly the same experience I had in my 440i on launch which was RWD. Got the hunch down heavy in the rear, same feeling as my AWD Stinger when I'm in launch. Keep in mind, I'm specifically referring to "Launch Control" not just "launching" from a start with a hard acceleration. Specifically, sport mode + traction off, brake down, kickdown to get the "Launch Control Ready" message come up. That specifically, according to what I've heard, is 100% power to the rear.

 

[westcoastGT]

I

Well it's exactly the same experience I had in my 440i on launch which was RWD. Got the hunch down heavy in the rear, same feeling as my AWD Stinger when I'm in launch. Keep in mind, I'm specifically referring to "Launch Control" not just "launching" from a start with a hard acceleration. Specifically, sport mode + traction off, brake down, kickdown to get the "Launch Control Ready" message come up. That specifically, according to what I've heard, is 100% power to the rear.

.............would love to go test that but it's puking snow here today and everthing is shutting down , there will be a tech type here to set the issue straight ! Cheers

 

[Marc Collins]

If Launch Control uses 100% RWD on the AWD models, Kia is pretty dumb. The whole advantage to AWD in a performance car is superior ability to put the power down in extreme conditions compared to a two-wheel drive car (that has the advantage of less weight the rest of the time). A Launch Control start qualifies as an extreme condition.

 

[Berzerker]

If Launch Control uses 100% RWD on the AWD models, Kia is pretty dumb. The whole advantage to AWD in a performance car is superior ability to put the power down in extreme conditions compared to a two-wheel drive car (that has the advantage of less weight the rest of the time). A Launch Control start qualifies as an extreme condition.

Yes, "extreme conditions" as it relates to driving in the snow or gravel, which you'd want to be in comfort and have a 50/50 distribution. Launch Control is meant to be something fun to do, and experiencing it in a RWD car is definitely more fun.

 

[westcoastGT]

If Launch Control uses 100% RWD on the AWD models, Kia is pretty dumb. The whole advantage to AWD in a performance car is superior ability to put the power down in extreme conditions compared to a two-wheel drive car (that has the advantage of less weight the rest of the time). A Launch Control start qualifies as an extreme condition.

pretty sure its 80/20 in Launch ...................but ?

 

[Marc Collins]

Yes, "extreme conditions" as it relates to driving in the snow or gravel, which you'd want to be in comfort and have a 50/50 distribution. Launch Control is meant to be something fun to do, and experiencing it in a RWD car is definitely more fun.

AWD in a performance car (i.e., Porsche, Lamborghini, etc.) is for wet and dry pavement, not snow or gravel or mud. Think cars that come with ultra high performance Summer tires... No one would sensibly disable the huge AWD advantage that they have by turning it off when you need it most. The systems that revert to 100% do so when you are driving calmly in a straight line for fuel economy purposes. Anything other than that situation benefits from at least 20% torque to the secondary drive wheels.