06-23-2021, 09:13 AM | #1 |
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G82 M4 high performance driving impressions from VIR (by former instructor)
Featured on BIMMERPOST.com I bought my car off the dealer lot in May. After the 1200 mile break-in service was done, and a few miles added on, I took it to Virginia International Raceway (VIR) for a brief HPDE with PCA. It was a nice day, temps in the mid-80s with high humidity. The car is a 2021 M4 with a manual transmission and the Michelin Pilot Sport 4S tires, at around 32 PSI cold. I am an experienced HPDE participant and former instructor. I did zero prep to the car. No race brake pads, no harness bar, no special brake cooling ducts, I didn't even flush the brake fluid since the car is so new. Nothing. Zip. Nada. Literally right off of the showroom floor. OK, I did torque the wheels and check air pressures and I put on a helmet.
I was absolutely gob-smacked at how awesome this car was on the track. If you look at my signature line below, you will see an M2, a few M5s and an M3 in there somewhere. I have tracked the M2 and an M5, multiple Porsches and Corvettes including a Z06, and an E36 race car. I've driven the M2,3,4,5 on the track at BMW's performance centers in both SC and CA, and I've driven the M8. The M5 and M8 are probably faster in most regards, but this car is still better. The M2 is an awesome little car, but it understeers more and is not nearly as liveable. I liked the M4 before I went to VIR. I love it now. The attached photo was clipped from the web site of the photographer (F&S Enterprises) but don't worry, I'm not ripping them off, I will order at least one real photo at full price.
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06-23-2021, 05:28 PM | #5 |
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Good writeup. You can reduce the tach spread on the HUD. I did, and it is far less intrusive. It's in Settings/Displays/HUD. In Corvettes, the understeer button is the throttle. Tip in tightens the line nicely. I've raced at VIR as well, some years ago, and Road America in my (much) younger days. Both great tracks.
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06-24-2021, 03:44 AM | #7 |
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Vivid and helpful impressions - great job.
As mentioned by vetteflier, the M-Mode HUD can be made lower profile. The option is called, “Reduced Height”. Here’s what it looks like. |
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06-24-2021, 09:12 AM | #8 | ||
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Who wants to loan me their car for a day at the track? Seriously, I suspect that the comp will largely perform the same, but with more horsepower will accelerate better and get a higher top speed. I like the challenge of shifting, heel & toe, etc. and so I figure as long as I can, I'll get the manual.
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06-24-2021, 09:56 AM | #9 |
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I also did not like that the HUD tach was distracting and took too much of my view. I don't like the setting to make it shorter. Instead, when I am at the track I lower the height of the HUD to ~2 notches above the very lowest setting. This cuts off the speed display and the very bottom of the tach. It leave just the bar and notches, and still displays the 'shift lights' when you get close to redline. Was a good compromise. And then change HUD back to normal at the end of the track day...
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06-24-2021, 11:40 AM | #10 | |
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Do you prefer the M2C or the new M3C for driving dynamics and fun factor? Also how do you compare the steering in both the cars and the transmission? I thought it would be good to ask someone who has spent a considerable amount of time in both. Thanks in advance!
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06-24-2021, 12:25 PM | #11 |
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"The M2 is an by awesome little car, but it understeers more and is not nearly as liveable. "
Exactly my thoughts. Thing is a vw golf. Worse car ever owned. Very cool news about m3 |
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06-24-2021, 01:06 PM | #12 | |
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So... The dynamics are different. The M2 is lighter, much more responsive due to the shorter wheelbase although the M3/M4 turns in much quicker. In the M2 you feel every little bump, paint line or shadow that you drive over. The M3/M4 is much more refined, much more composed and compliant. Better? Yes. An example: On my way home, there is a mini-ramp from Road A to Road B. It's a slowish right turn, call it 20 MPH for a normal person in a normal car. So natch I take it at 45. It is off-camber, bumpy and has many pavement patches. In the M2, the car literally bounces over the bad spots and can jump several inches over as it loses traction. In the M4, the car absorbs the bumps and never loses traction, and doesn't jump off of your line. The shifter in the M2 is a bit tighter than in the M4. The spacing/positioning of the lever between gears, especially laterally, is much shorter. This is, I think we can all agree, a desirable trait. Not so close that you might miss the gate and hit the wrong gear, but in the M4 you'll look at the shifter in fifth and think, "wow, that sure is far away". It's not at all bad, but comparing the two, the M2 wins. However, it loses in the clutch department. Sure, they are probably the same clutch and transmission and slave cylinder, but in the M2 the engine management cuts back the power significantly during an upshift, and it would be nearly 2 seconds after you let out the clutch, at WOT, that you would feel the engine surge forward as it reinstated power. The M4 does the same thing, but it's less dramatic, barely noticeable and if I hadn't of been so bugged by it in the M2 and watching for it, I'd likely not notice it at all. Steering. It's gotten much better, but it's still not where it was in the hydraulic days. The M4 falls short on the street, noticeably in my car when steering the car back to straight after a turn. Or when making small adjustments on the highway. The M2 was marginally better, although I have to note that my car initially had a "jerky" feel to it that took 3 service visits and escalation within BMW customer service to get it resolved, requiring a replacement of the steering rack. I think the feedback and "feel" of the steering in the M2 was superior. However, as noted above, the initial turn-in on the M4 is impressive and quite awe-inspiring. Everything considered, and without reservation, I prefer the M4 over the M2.
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06-24-2021, 01:33 PM | #13 | |
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06-24-2021, 02:26 PM | #14 |
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Thanks. Yes, proud member since 1995...
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06-24-2021, 03:20 PM | #16 |
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Good review, but it reaffirms my convictions that having all of these electronic settings available to the customer are a negative. 'SPORT' settings have been faithless to the driving experience since their inception (E46/E39) with it now having spread from throttle pedal to steering, dampers, and now braking!! Most people/reviews consistently lament how artificial modern calibrations feel and defer to comfort ___ simply because it is the least annoying option. BMW has traded good dynamics for gimmicks and it shows... why they offer so many adj. settings in lieu of just getting two modes dead-on-balls-accurate is beyond me.
There's just no excuse not to have EPS somewhat figured out by now. Glad you like your car -I really am- but it does kinda sound like you're a bit drunk with (horse)power |
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06-24-2021, 03:30 PM | #17 | |
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06-24-2021, 03:35 PM | #18 |
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Now the M2 lovers can't say you're the only one who has an issue with the M2's understeer.
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06-24-2021, 03:46 PM | #19 |
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Nice review.
I think you have it backwards. If you didnt lift and full throttled, you wouldnt have spun. Lol
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06-24-2021, 04:18 PM | #20 | |
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If you haven't gotten your Porsche yet, you'll soon share the same resentment as I lol. They just get the steering and throttle right and that's why they are not variable. It's what you expect from Germans. There are other less expensive manufacturers that do a better job too; even a $35k Civic Type R delivers on these points. |
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06-24-2021, 04:20 PM | #21 | ||
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06-24-2021, 06:31 PM | #22 | |
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https://newsroom.porsche.com/en_US/2...day-24385.html Exhibit B: https://www.suncoastparts.com/product/SKU991PSP.html You've convinced yourself of a narrative that's divorced from reality. |
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