01-27-2021, 06:32 PM | #67 | |
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10-04-2021, 12:24 PM | #69 | |
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11-16-2021, 09:08 PM | #70 |
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iBrakeLate any updates?
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'2018 F87 M2 LCI | LBB | GC Camber Plates | Ohlins R&T 90/190N/mm | 18x10 et33 square 275/35 | MPe | Poly Transmission Mounts | Recaro Sportster CS
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11-17-2021, 05:44 AM | #71 | |
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You then point out that trail braking (using proper technique) seems to alleviate the issue. To me, it sounds like you’re overdriving the car. You may be operating at 105%, try dialing it back to 99% and LEARN FROM YOUR SLOWER SELF. I mean that in no disrespectful way, but there’s alot to be learned from your slower self. |
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11-17-2021, 01:47 PM | #72 |
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The M2C understeers less than most cars I've driven on track, mostly 5 series.
But yes, at steady state throttle and large steering angle it can understeer a bit but technique can solve it. One, use MDM mode and apply more throttle to rotate the car, but better yet, adjust your line to a later apex in and through the corner, and open the steering wheel sooner on exit. This reduces the slip angle, allows more front grip, and more rear acceleration. I also recommend some time on a skid pad to learn the fine amounts of throttle between understeer and oversteer. The M2C can induce oversteer with a gradual increase in throttle, and doesn't need big stabs at it. EDIT: I added a crude drawing to illustrate my point. Also note the later turn-in. Adjusting that by 2 feet makes a surprising difference!
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2020 X3M non-comp, Alpine White over black : Exec Pkg, ventilated M Sport seats, 20"s
2020 M2 Comp, Sunset Orange/Blk: Orange stitching, DCT, exec pkg, bicolor rims Gone '18 M550i, '16 X4 M40i, '15 M5, '13 X3 35i, '12 335is, '11 X5 50i, '09 Z4 35i, '08 550i, 06 X3, 06 650i, '02 M5, '99 540i Last edited by richard in NC; 11-17-2021 at 02:07 PM.. |
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11-18-2021, 12:40 AM | #73 |
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stock springs are too soft and alignment sucks
get an aggressive alignment with camber correction hubs, lower stiffer springs, and/or camber plates and you'll solve 90% of this issue. |
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11-18-2021, 05:45 PM | #74 | |
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Angle of your car at apex is more of the determining factor to throttle applications than early or late.
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12-06-2021, 12:12 AM | #75 |
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Just ran my first autocross with a stock M2c and had this issue. Upon first impression, I was sure that this was an Active M differential tuning issue. The rear was stable while trail breaking through a corner but IMMEDIATELY let go as soon as I applied the smallest bit of throttle, which doesn't make sense dynamically as transferring weight to the rear should increase grip not lessen it. If I can't find a way to tune the locking, I'll be forced in to a setup with soft rear springs and more staggered tires than I would like.
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12-12-2021, 08:56 AM | #76 | |
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I’ve been advised to get more seat time (it rules) on the stock setup and alignment before progressing to the TCK setup and Cup2s. |
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12-12-2021, 10:30 AM | #77 | |
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Curious why are you targeting Cup2’s as part of the next step when you do upgrade?
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12-12-2021, 08:41 PM | #78 | |
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Because I’m sticking with 19s and I want something I can put some street miles on and it’s still my daily. Came up on the TCK setup from an instructor that had the M2C TCK dev car and couldn’t pass it up. Just out chasing zen, not records. When I have a 991 to daily, the M2 can get more focused. |
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12-13-2021, 06:31 AM | #79 | |
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01-22-2022, 12:32 PM | #80 |
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Looks like push/kick to me.. Did you add more steering input very late right before apex and held that longer that you should've. The car looked to push... then the fronts gripped up and the rear came around..
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