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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Tracking / Racing / Autocrossing > Best Tire Size for 18x8
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      02-04-2019, 03:06 PM   #1
reyoasian
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Best Tire Size for 18x8

Hi, F30 LCI M Sport here with OEM 400M wheels (18x8 +34).

What's the best size of tire for a track setup on this wheel size?

I'm looking for square setup, was thinking of 245/40R18 but unsure if this may be too wide for 18x8.
Also considered 235/45, however it seems a little narrow compared to the 255/35 rears on the factory 19s.

Tires I'm considering: AD08R, NS2R (180TW)

Last edited by reyoasian; 02-04-2019 at 03:23 PM.
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      02-04-2019, 10:35 PM   #2
Relax19
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Track tires run wide usually. While you're on 18x8's I'd probably run a 235/35/18 or a 235/40/18 if you want more sidewall.

Don't get the NS2R's they're garbage
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      02-05-2019, 01:27 AM   #3
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245 is doable but I wouldn't go past that. 8 inches is roughly 205mm
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      02-09-2019, 06:16 PM   #4
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https://f30.bimmerpost.com/forums/sh...MMMM+new+tires
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