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      08-20-2022, 10:30 PM   #3
spxxx
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Drives: 135i M-Sport
Join Date: Feb 2014
Location: Valley of Silicon, CA - United States

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Quote:
Originally Posted by omgzirra_exe View Post
Quote:
Originally Posted by spxxx View Post
Hi y'all!

I'm in the middle of spec'ing a new diff and wanted to get some feedback from others who have run shorter gears in their DCT M3...

I was initially leaning towards a 3.62 as I'm running taller 275/35 tires right now but I'm worried that it'll be way too short if I move back to 285/30 or 295/30 tires (~4% smaller diameter)... So I'm now thinking that a 3.45 with shorter tires would be ideal.

Anyone have experience with 3.62 gearing and these tire sizes? Ideally with CA track experience (Buttonwillow, Laguna, Thunderhill).
my friend dom runs the drexler with 3.62 with 275/35/18 maybe it was 285? i don't remember. . and he says its absolutely amazing. ill send you his IG handle so you can talk to him.
Please do, I think I'd love a 3.62 after driving a 3.45 FD car (thanks spooni ) - it didn't feel much shorter than OEM with 285/30 tires. According to my math a 3.45 is ~9% shorter and running a 285/30 tire is ~4% shorter than a OEM FD with 275/35 tires.

I plan to run 295/30 eventually so I don't want to go too short with a 3.62.

Sorry for the very specific questions, thanks all!
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