Who's running 275s on the E36 chassis?

[aeronaut]

My current baseline is:

F: 5.3"
R: 6.1"

27mm front sway, OEM rear.

But I run a high ride-height because of this one turn. I have plenty of clearance for normal turns.
I'm rethinking that this year, I think I'd be much better off lowering another 1/4-1/2", and just slowing the fuck down on this turn so I don't rub.

Screenshot from 2023-02-02 10-20-21.png

[olemiss540]

Is it your rear rubbing correct? Everything I was seeing mentioned a 1/4 to 1/2" rake. Are you looking to keep the front asis aand lowered the rear further or both?

[aeronaut]

I can go to full spring compression on both front and rear, no tire rubbing, so my ride height is to prevent full spring compression on that one turn.
I am on the edge of throttle-on oversteer on corner exit, but I rarely worry about getting to full throttle quickly.

I'd like to lower both front and rear, but yea, also try 0.6" rake.
(I am getting inside wheel spin with 850/1000 springs compared to the 750/900, but I think that's the diff clutches getting tired.)

[pbonsalb]

I assume you read about Hard’s experience with tracking wider tires than 255. Flares would be best. I run 275 rears on 17x9, have seriously rolled and pulled my fenders, raised the ride height about as far as I can, and changed to 650 lb rear springs but it still is not ideal. I have a set of flares and 17x10s to install.

[olemiss540]

I assume you read about Hard’s experience with tracking wider tires than 255. Flares would be best. I run 275 rears on 17x9, have seriously rolled and pulled my fenders, raised the ride height about as far as I can, and changed to 650 lb rear springs but it still is not ideal. I have a set of flares and 17x10s to install.

Aeronaut and I are both flared running 9.5 -10" wheels currently.

[aeronaut]

Aeronaut and I are both flared running 9.5 -10" wheels currently.

[bjh102]

My current baseline is:

F: 5.3"
R: 6.1"

27mm front sway, OEM rear.

But I run a high ride-height because of this one turn. I have plenty of clearance for normal turns.
I'm rethinking that this year, I think I'd be much better off lowering another 1/4-1/2", and just slowing the fuck down on this turn so I don't rub.

Screenshot from 2023-02-02 10-20-21.png

Where are you measuring this height from?

[aeronaut]

Jack points

[bjh102]

That's what I thought. Thankyou.

[olemiss540]

Ok, heres what I look like at 5.1F/5.7R measured at the jack point without pads.
2023-02-03 13.20.39.jpg2023-02-03 13.20.55.jpg

Thinking raise the front another 0.25" or so? Would reducing the rake help with rear traction under braking? With my tires being 1" smaller in diameter that aeronaut, we are probably in the same ballpark on ride heights, althought my springs are softer at 550F/650R.

[aeronaut]

Looking good!

It would help a teensie bit with rear traction in braking. IMO, rake (between 0.2" and 1") is a small knob to tweak.
Did you set ride height with your weight in the driver's seat?

I'd send it as is. See how it handles. Put some zip tyes on the damper shafts to see what travel you're getting to see how close you are to coil bind.

Here's kinda what mine looks like.

M3-1.jpg