10-30-2020, 08:52 AM | #1 |
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M240i traction w stage one
As of right now I have a stage 1 BM3 and cattless downpipe. I'm having trouble keeping traction on 40 rolls. What do you think is my best option?
I'm not trying to spend money on a LSD so is my best option bigger tires or possibly lowering the boost by gear? I'm trying to eventually move to stage 2 but I can't do that until I can get my power down with my current set up. |
10-30-2020, 09:18 AM | #2 | |
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10-30-2020, 09:37 AM | #3 | ||
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10-30-2020, 12:25 PM | #4 |
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Is it cold out? It's surprising you're losing traction at 40mph with MPSS tires. Or maybe I'm just underestimating a stage 1 tune
MPSS does come in run flat btw. It would have a "ZP" logo next to the word Sport. |
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10-30-2020, 12:38 PM | #5 | |
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My tires are fairly new as well. |
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11-07-2020, 10:54 PM | #6 |
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i have 265 wide rear sections with Michelin 4S, it makes a huge difference . the car literally sucked on the stock 18 and 245 mpss . this is my 3rd 2 series and imo this is the best setup . BBS CIR 19'' , the front is on 235 wide
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11-14-2020, 10:02 PM | #7 |
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What gear are you starting at? Maybe start at one gear up?
I had MPSS and they where apparently run flats. They where squirmy. Moved to continental ECS and noticed big improvement. |
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11-15-2020, 11:32 AM | #8 |
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That's prob the best advice. I'm on stage 2 E30 and can only get traction easing into 3rd gear. Plan on using this setup in the spring.
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11-15-2020, 12:05 PM | #9 | |
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I'm making 470-480 WHP and 500+ torque and I'm amazed at the difference the 265 PS4S made. I had 255 PSS before and even one size wider made a noticeable difference. I can hook pretty well in first/second as long as it's above 60 degrees. Granted, I do have the LSD and Paul seems to have made the boost come on more more gradually on my tune, but I've been able to get a best of 3.7 0-60 (3.5 with rollout).
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12-05-2020, 12:44 PM | #10 | |
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Just curious have you figured out a solution that'll work for you? I"m having the same problem at the moment with Stage 1 JB4 (had it without the JB4 lol) ... I know the LSD would be the way to go... but someone mentioned 265 MPSS on the rear... although I didn't know you could go that wide on an m240i without any issues on the rear...? |
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12-07-2020, 03:58 PM | #11 | |
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The inner tire is very close to the the shock dust boot, but it never rubs even on the track. |
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12-15-2020, 01:40 PM | #12 | ||
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I've been messing around with lowering the boost by gear with bm3 and it's has helped a little. However theres no point to upgrade to stage 2 with out bigger tires or LSD |
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12-15-2020, 06:44 PM | #13 |
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Stage two will spin the 265's under wot in 1st. I can spin both rear wheels.
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12-16-2020, 11:01 AM | #14 |
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BM3 Stage 1 vs Stage 0+
For winter I am switching to Stage 0+ -- for less torque but higher HP top end.
. Stage 1 with cold winter tires just does not work for me -- even in Alabama. . . |
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12-17-2020, 05:29 PM | #15 |
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With Stage 2 - I drive in ECO mode if it snows and boost reduction on 1,2 and 3.
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Rogue Engineering SSK & transmission mounts, WaveTrac LSD. Ohlins R&T coilovers, Turner monoball thrust arms, F87 LCAs, GC camber plates, Superpro subframe bushings, Megan Racing adj. RCAs, delrin differential bushings. Stoptech BBK 6 piston (f) 4 piston (r). |
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12-28-2020, 06:37 PM | #16 |
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In my opinion I would ditch the super sports and get a set of Michelin pilot sport 4’s or 4s’s
I’ve just changed all 4 from SS too PS4’s and it’s made a world of difference. |
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