brake bias front to rear...

[old300e]

I have driven several BMW's over the years and recently picked up a 300e.

After some interesting minor episodes in the snow and ice - I decided to try a panic stop on dry pavement and was able to lock up the front left (possibly both) caliper as the antilock engaged. I felt like the car nose dived a bit - again compared to the lighter cars I have been driving.

I do not remember being able to do that as easily with my lighter (2800lb) bmw.

we have also had trouble with the car sliding down the driveway in the AM with any snow on the ground - seems with the revs up as the engine races that it is much harder to control the car on the snow in reverse. Car has a set of well used Blizzaks on for winter.

I think the rear brakes are working - tried the brakes with the car jacked up - the seemed to work as I was expecting - very hard to turn the rear wheels with the brake on.

So,

is the fact the 300e is heavier ( what is the weight anyway? ) causing this or is there a brake bias valve needing adjusted or other issue?

Thanks for any input..

Don