But I suspect, fix the braking and 90% of your understeer problems may go away. So take my advice with a giant grain of salt.
#Racerender g force adjust full#
Heck my CR buddy who's NEVER AXed beat me by nearly 1 full second on a 27.5s AX course in the same identical car. My standard disclaimer applies here though. But I suspect either your brake release prior to turn-in was too abrupt, causing the front end to come up too quickly and losing grip to allow you to transition into the turn smoothly, or the timing between brake release and turn-in is off leaving you in a perpetual state of understeer. Now, not having the opportunity to sit in the passenger seat, and not having video to review, whatever I have to say here is all hearsay (and wild guess). I'm going to share a simple adage that was an epiphany for me as a driver. This would suggest to me that one of your multiple inputs up front on turn-in was too quick, resulting in the car going into an understeer state before the suspension sets. If you asked me where I was running into it, I'd say that it was from turn in to apex. Search on alignment with Ship, Ian, The Hack, or me-lots out there if you want more detail. You may be limited there or going with changes may bump a class-in which case stock might be it. Now, with AutoX (I run fun only, not comp) what you can do and stay in your class is another question. 1.7 is more street friendly with the toe settings for wear as the rear isn't easily swapped between settings like the front. 1.7 to -2.0 rear (YYMD) also works nicely. Many of us have found going with stock rear toe range towards the max toe-in and using RTAB limiters helps put down the power exiting the corners. (note, torque wrenches are not particularly accurate at the ends of their scales, and these bolts can sheer if over-torqued). Just move things back to "stock" for street use. (Hack's idea, not mine!) Poor man's camber plates. That gives me about -2.5 to -2.6 and a bit of toe-out. I mark the positions of each strut for reference, then move the struts full inboard for track or autoX. For track and Autox I'm using two camber washers up front, -1.8 street with IIRC 1/16th total toe-in.
I can't imagine driving this car close to stock settings. Lots of old threads on this but running -2.0 up front isn't going to eat tires as long as you keep the toe-in minimal and/or zero. Car has 100,000km, I suspect my shocks may be a strong factor in this at this mileage.
#Racerender g force adjust mods#
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)īone stock, zero mods except for RTAB limiters when I re-did the rear and bushings.
I'm open to suggestions on things I can change in driving style, or replacement parts/alignment settings. Low pressures had massive sidewall flex that had the fronts scrubbing the tire "shine" off half way down the Michelin letters.īone stock, zero mods except for RTAB limiters when I re-did the rear end bushings. 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. Michelin Pilot Super Sports 245/275 front and rear, have tried various pressures between 30/32 f/r to 35/36 f/r. 0★3' camber / 0☁5' toe (per wheel with 0☃0' total) / 0☀0 thrust angle Not sure I agree my e30 is around -3°/-3° and behaves well on track but I've been trying it as they suggested. Local shop aligns in degrees/minutes, BMW specialist and they strongly advised not going too far negative. Competitive for my class) and controlling the back end was difficult. My times were not great (good, not great. 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. 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. I'm not quite capable of maneuvering the car consistently with the throttle to counteract the understeer. 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 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. I did my second autocross of the season today, and I've got 6 more to go.
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