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      05-11-2020, 07:16 PM   #128
Max Well
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Drives: '22 BG X3MC, '20 BSM X3MC
Join Date: Jun 2014
Location: Southeast USA

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Quote:
Originally Posted by robopp View Post
That's stock? If so, gesh! My stock RS3 ran a best 3.54 0-60 and weighs 1000lbs less. Did you mess with tire presure? I found significant gains going to a very low tire pressure. Obviously don't want to drive like that, but at the track made a huge difference.

Waiting to get my windshield replaced on the RS3 then I take delivery of my X3MC. I cannot wait.
I think you're spot on with the tire pressure issue, at least at the track I've run. Here's a close-up image of the track-tire interface from Nov 2019, and you can see how glass smooth it is. I definitely noticed a big difference going from OEM rec psi settings 33F/38R in Nov '19 to 32F/35R in Feb '20.

Next time out I'm planning on 30F/32R and expect, at least at GNV Raceway, traction should be improved once again. After those trials I'll change to race gas to see what gains I get. Incremental changes so I can assess what makes a difference.
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