[Varinn]

I did my second autocross of the season today, and I've got 6 more to go. I spent my entire day battling absolute gobs of understeer and I'm hoping I can get some pointers on what I might be doing wrong.

If you asked me where I was running into it, I'd say that it was from turn in to apex. Holding steady speed didn't seem to help and I tried trail braking in, slow in fast out (best result) and diving in hard after braking (no good, just plows hard). I'm not quite capable of maneuvering the car consistently with the throttle to counteract the understeer. Our local autocross pad has a lot of small transitions between pavement sections and the ground sort of rises and falls like small waves, attempting to throttle steer in a big way had me running the course backwards on one go at it. My best runs were hard braking, gentle turn in, and wrestle on the edge of understeer through the turn with a hard throttle out and some oversteer through exit. My times were not great (good, not great. Competitive for my class) and controlling the back end was difficult.

Local shop aligns in degrees/minutes, BMW specialist and they strongly advised not going too far negative. Not sure I agree my e30 is around -3°/-3° and behaves well on track but I've been trying it as they suggested.

Front specs
-1°25' camber / 6° caster / 0°05' toe (per wheel, 0°10' total)

Rear specs
-0°53' camber / 0°15' toe (per wheel with 0°30' total) / 0°00 thrust angle

Tires
Michelin Pilot Super Sports 245/275 front and rear, have tried various pressures between 30/32 f/r to 35/36 f/r. Higher pressure seemed to have the best result in feel from the seat but wasn't totally utilizing the tire width (barely touching the michelin man. Low pressures had massive sidewall flex that had the fronts scrubbing the tire "shine" off half way down the Michelin letters.

Suspension
Bone stock, zero mods except for RTAB limiters when I re-did the rear end bushings. Car has 100,000km, I suspect my shocks may be a strong factor in this at this mileage.

I'm open to suggestions on things I can change in driving style, or replacement parts/alignment settings. I am not afraid to run large camber if need be but would like to keep my suspension street-able (max would be H&R street performance at max ride height)