Quote:
Originally Posted by wootloops
Stumbled on your build here and it's got me thinking twice about spring rates...
I'm about to go with YCW 1-way adjustable coilovers. I was originally shooting for the usual 1:3 front/rear spring rates (i.e. 6k/18k) to maintain the nearly 1:1 wheel ratio front/rear. But now reading that you have more like a 1:1.5 spring ratio with your 650/1100 I'm second guessing it. To add more confusion to the mix, when I emailed YCW asking for their recommendation based on my specs, they suggested 8k/18k or 1:2 spring ratio.
My car is going to be very similar to your build, similar weight 128i. You are at a higher skill level than I am, though.
Do you feel like the 650/1100 is a good fit now in terms of front/rear bias? Or if you could do it over again would you try to have it more rear biased?
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I am happy with the 650/1100 I am at now but I also have a wing and splitter, are you running that as well? I think it may be too stiff with no aero but could be wrong. I ran 450/1050 for a while when I had no aero and it did well but was pretty prone to oversteer so I think 650/1100 works better for me. The 800/1100 was way to pushy on the maxxis, I am still curious how it would have been on the hoosiers.
After trying all those setups I don't think I would recommend the 1:3 approach as it was a bit much to handle. Watching this video from last year on 450/1050 you can see I'm battling the rear end almost every corner.
With ALL of that said I only did 1 event on the 650/1100 on Hoosiers so time will tell as I get used to it if I want to change anything.