Thread: Race prep 335i
View Single Post
      03-10-2020, 11:27 PM   #153
johnung
Major General
United_States
4531
Rep
5,395
Posts

Drives: 2015 BMW 335i x-Drive Auto
Join Date: Oct 2017
Location: New Jersey/Philadelphia

iTrader: (1)

Garage List
Quote:
Originally Posted by DVC View Post
Quote:
Originally Posted by Brady154 View Post
I have 6 front and 16 rear, and I feel like I need 8 front and 12 rear. The rear end just wouldn't hook up. It feels like the rear is way too stiff to hook up. I also need a wing for some down force, so I'm not sure how much of my problem is lack of down force or spring rates.
I had the same issue with the 6k /16k setup as is came in the kit. After talking with the Ohlins rep, and Leonard from Swift springs, and running the numbers for optimal rates for my corner weights, they suggested going 8k front and leaving the rear at 16k. So I went with 7" 8k Swift springs for the front, and left the back as is..... it made all the difference in the world. The rear of the car is totally planted now.

By the way, I have H&R sway bars, with the front adjusted to the stiffer of the two settings (rear is fixed).
I've got the H&R sway bars on my 2015 335ix. They are awesome. Cornering is flat and balanced!
Appreciate 1