this topic has been covered alot im sure but wanted to hear your thoughts. I know the RCF got the weight disadvantage, But besides the weight can a full bolt (I/H/E) RCF pull on a stock M4?

I got a friend with a stock 2016 m3 manual and we will be doing a few run soon in Mexico. Only thing i got done so far is a full catback but thinking about going full bolt on in the future because the car just sounds amazing with headers. M3 is stock

Also curious to benefits of using Sport + (manual mode) vs sport + (auto)?

Thanks.

 

short answer is "yes." Are you talking just doing straight road rolling runs? Are you talking about at a drag strip? Are you talking around a road course?

in 1/4 mile you already have the advantage of the auto vs his hopefully decent stick shifting... on a road course the stock RCF only trails the M3 DCT by 3 seconds with the same driver... now imagine different drivers and stick vs auto variances, that's a lot of factors. The cars are very evenly matched, it's up to you drivers to actually get them to "one-up" the other.

 

Manual mode puts power down efficiently since the lock up torque converter is locked so there is no slippage from the transmission. That is why you get kick in the back shifting full throttle at redline. In auto mode, transmission will slip according to how much load the tires have. Also, if you race from a roll in auto mode, it takes 1 second for the auto mode to find the right gear so the other guy would be gone before the car downshifts to the right gear and then it becomes a game of catch.

So, it would be manual mode + sport+ and looks like you are doing rolling start (in Mexico) so downshift to 2nd gear at around 40 - 50 mph while waiting for the honk. Then, stomp it hard (make sure you push through the kick down switch all the way to the floor) and be ready to shift soon to third at the beep.

 

I'm not familiar with the kick down switch but I thought that you want to reach it if you want your car in auto mode to know that you're looking to downshift as low as possible?
Does it make a difference if he's already manually downshifting to 2nd?

 

If you don't press hard on the throttle with enough force, the kick down switch stops your foot from going to the floor. You have to slam the throttle hard to "kick through" the switch and completely floor it. Kick down switch is supposed to be for auto mode downshifts with more aggression in case of emergency downshifts.

Yes, you need to know the best optimal gear for a certain speed. The simple rule is, just downshift low enough for you to be around 6000 rpm and hold it there waiting for the three honks for the best rolling start. At around 50 mph, it is 2nd gear for the best optimal start.

 

it be a few friendly rolling runs and yea i figured it be alot harder for the RCF to keep up if the m4 was auto but with a manual i think it be pretty interesting.


Good Points man Thanks.

 

You are welcome. Maybe, catch it on video. Should be interesting to see. RCF is a beast from rolling start if you start especially from 50 mph in 2nd gear.

 

yea haha cant find a rcf video on youtube vs a manual M3/4 il most likely get it on gopro and upload it.

 

Yeah, I ordered one a few days ago as I want to make a few videos of solo runs in my RCF. I will watch those during my winter months LOL I also got a POV head mount to make it a first person POV.

 

Don't forget to turn off the trac control and a good set of tires will help too.

 

Don't race on the streets. My advice.

 

https://www.roadandtrack.com/car-cul...le-bone-stock/

 

Even will a Full Exhaust + Intake, you possibly would be neck to neck but doubt you are going to pull on an M3 or M4 (the RCF has a huge weight disadvantage). Now if you could somehow chop 200-300lb off the car, then its a different game!

 

M3/M4 is a very fast car and a drag race against an RCF likely sees the RCF losing provided the Bimmer puts the power to the ground and not into wheelspin. They may be in the same class but the missions appear different imho. As stated, your best chance is that he's not so good with the manual. The car is listed as a 4.1 0-60 with a manual and 3.9 with the DCT auto.

 

Let this resurrected thread die. The OP never came back. It was about how he should race his friends 6 speed manual M3/M4. I would happily race a near stock M3/M4 from a roll any day regardless. The topic of hire the cars compare on paper has already many threads on it.