NateOZ

I've been doing it on the street, but I'm not yet there on taking it to the track. I'm sure I can save 1-2 seconds off a 2:30 lap time. I'm naturally right handed/left footed, so I'm hopeful I can get there.

levd

I'm not sure about RS, but 991.1 GT3 is not LFB-compatible.

You will get all sort of strange things coming from transmission if you LFB in city traffic in this car. No problem on track but awful if you DD your car.

It was a major PITA for me. Nothing like this ever in 997.2TT PDK.

I had to re-learn back to RFB.

Another non LFB-compatible is S Diesel Macan. When you LFB this car in city traffic, it suddenly becomes irresponsible to throttle pedal for second or two. I almost crashed loaner Macan twice because of this.

lnirenberg

At the risk of dating myself squarely in geezer territory, when I got my license in the late '60s left foot braking was widely discouraged especially with 3 peddles. Being from the hates authority side of the spectrum, I left foot braked until about 25 yrs ago but stopped for reasons I can't recall. I've been practicing with my DD since fall, but my daily has ideal pedal placement for this. I agree with several posters that the 991 pedal placement is offset a little too far right but when I get back on track I'll give it a go. I absolutely can't imagine switching back and forth right/left foot braking dependent on corner as my muscle memory just like to brain kind isn't as flexible as it used to be.

mehoff

I don't see any time advantage LFB w/ three pedals (maybe a tad of better front tire temp management) as it's primarily about less abrupt trail braking.

On a large twisty like Themal there is time in a Clubsport, but I don't know if it's more psychological as it's easier for me to carry more speed into hairpins with both the brake and accelerator available to stabilize the car.

In my 996 GT3-class car (faster than the CS), left foot trail braking is for turns 3-4, not 6. IMHO 6 requires more of a quick stab to set the nose, turn in blind and back on gas 10 feet before apex (about .5 of a sec letting the car roll, so no need for both feet). It pinches the corner a bit, but in my car it's demonstrably faster.....just got to get used to the blind turn in. I stop doing it after about 45 minutes in an enduro because margin for error is nothing.

Then again, I don't own a racing team so what do I know. Carry on.

Sean in Texas

Benefits of LFB aside, I also thought that this was a bad idea in the GT3. Something to do with cruise control code, and when you tried to depress both the brake and the gas, the ECU didn't know what was going on, so shut off gas flow.

levd

Yes, this.

Another thing I was getting is seeing rev counter go up and hear engine revving high, but car just not getting any acceleration, like if clutch was slipping badly. Also some other strange things.

All of these problems ended forever when I gave up LFB.

MileHigh911

"FULL BRAKE" doesn't happen like that with LFB. Don't confuse it with threshold straight line braking in a front engine car. Different animals. And "softly sprung" street cars---I get it. With the 991.1 GT3, it's spring rate and PASM are not soft by any means. It is all about feeling the physics of what you are doing with the center of gravity.

MileHigh911

levd.... I remember you having those issues! Was your car a 2014? or 2015? I have not had any of those issues.

ML///

I do it to settle the car on track before quick turn-ins when I can't take it flat; it seems to work pretty well. I just can't quite get the full-on hard braking at turn one with my left foot. I also enjoy left foot braking in stop-n-go traffic with an automatic - this way both legs get to work out.

levd

MY14, November 2013 production.

zweebach

The tune on my 997 RS allows LFB and I have been working at left foot braking for years on the street. I have found that several cars get confused if there is too much brake/throttle overlap. Unfortunately as cars become "smarter" they seem to respond to this overlap by doing almost nothing. Almost nothing because they seem to roll forward lethargically. If pulling out into traffic, this puts you in harm's way without giving you the ability to get out of the way.

levd

Yes. It's the issue I had.

Hoopumpers

I often find I associate braking style with the car. Obviously kart or some formula, you have no choice so you just do it. The old dog new tricks thing is hogwash imo.

Funny i I honed my use of it on the road in my McLaren 12C. The pedal setup and toe box was so natural for left foot braking, I just did it everywhere I drove the car (thanks Woking!).

The greatest challenge to me is finding the same level of finesse in a newly trained left foot that you have in a right foot with decades of practice.

I picked up a radical recently and, though not required physically, I just decided to never let my right foot hit the brake. Now it's the only way my brain thinks about driving that car. It certainly offers more flexibility in balancing at the limit.

When i race in my 997 cup though, habits kick in and I still right foot brake 80-90% of the lap. Only on unique balancing corners (omega at WSIR for example) do I make it a staple of every lap.

Great subject CJ. Generally never read about technique in this section. Plenty in Rennlist racing forum, but the cast over there is pretty set in stone. Nice to get some new opinions here

jlanka

That Rorhl video is sick

shentca

I was doing LFB in 991.1 GT3. I guess I overlapped throttle and brake and the master cylinder threw an error code. Brake remained on until shifting into 2nd gear after that. So would have to apply major throttle in 1st gear and then abruptly shift into 2nd gear to get brake to release. Had to get dealer to reset the master cylinder to drive it again! Didn't do LFB after that.