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Agent7
07-06-2002, 07:47 PM
Today I'm doing 90MPH on Bee Caves Rd. in Austin and all of a sudden the pick-up truck in front of me, goes over this huge piece of ply-wood, and as he passes over it (his tires must have hit it), it flys up in the air towards me. I instinctively hit the brakes hard and jerk the steering wheel to avoid hitting the mid-air, grill-high object. I feel my rear wheels start sliding much too uncomfortably out of control and starting to come around. My front wheels feel stable and tracking properly but the rear end is definatley not planted firmly. This all happened in an instant and the car regained stability and I was tracking properly. The feeling of the rear end sliding like that makes me wonder if I need to alter something. I am running 36 frt. & 36 rear pressure with new Michlens on a 2002 M3 w/ 2000 miles. Should I lower my rear tire pressure?

StahlGrauM3
07-06-2002, 11:01 PM
You need to alter your driving style more than anything else. No car can hold its rear wheels in place under hard braking and "jerking" the wheel. I prefer 36F/34R but it won't prevent the situation you experienced. Under hard braking, weight shifts to the front. DSC probably saved your butt. As is suggest to everyone...driving school and some track time will improve your driving skills tremendously.

pglaskowsky
07-06-2002, 11:47 PM
I had a very similar experience a few months ago in my 540. I was overtaking a pickup truck in the middle lane of a freeway, waiting until I passed a slow car in the fast lane before moving over to pass the truck.

As I got closer to the truck I saw he had a bunch of 2x4's standing in the bed, leaning forward against the cab. I had just enough time to think that this was a really bad idea when the wind caught one of them and sent it cartwheeling into the air.

The arc of the board's ballistic trajectory looked like it would terminate right between my eyes, so I yanked the wheel to the right as hard as I could. I knew the lane to my right was clear (situational awareness is your friend), and though I expected I would spin the car, I was sure that would be better than taking a 2x4 in the face.

So what does the 2x4 do? It goes fluttering up into the air... gaining altitude. I realized almost immediately that it was NOT a 2x4 at all, but just a length of some kind of thin, light material-- vinyl siding? A shingle? I'll never know.

So that freed me from worrying about where the thing would land, and now I had some 4,000 pounds of car and driver squealing through a sharp right turn in the middle of a freeway. Well, okay-- I wasn't squealing, just the car's tires. I was a little surprised that I hadn't spun out, but I just shrugged to myself and got myself out of it. Holding a steady throttle and steering very quickly back to the left was all it took... with the DSC to help, that is. I dipped my right wheels onto the breakdown lane before getting it straightened up again, but apart from scaring everyone behind me, there was no harm done.

These cars are great, huh?

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srs2z
07-07-2002, 12:26 AM
<br>My Baby<br>
<img src="http://www.people.virginia.edu/~srs2z/DSC_3932small.jpg">

StahlGrauM3
07-07-2002, 12:04 PM

DanLaw
07-07-2002, 08:28 PM

M_Rod
07-07-2002, 11:21 PM
Lower you rear pressure to 34 anyway, although this would have not likely made any difference. Oh how that sounded like fun! I love catching a tail around (although not under those circumstances)!


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