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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Tyre Pressure Question



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      06-11-2010, 04:58 AM   #1
DeadEye
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Tyre Pressure Question

Hi All

I changed my crappy M-Sport 18's with RFT's to BBS CH's 9.5x19".

After having them refurbed last week I put some Kumho 265x30 19's on. (had Yokohama before)

At first I hated them, they felt like they were flat with tonnes of tyre wall flex so after speaking with a tyre place I upped the pressure to 40psi rear and 37psi front based on the sticker in the door jam.

This has improved the frankly danerous oversteer and "disconnected" back end feeling but I was wondering if I should/could go higher. The sticker in the door jam refers to 255x30 19 so mine are 20mm wider. Does having wider tyres affect the required pressure?

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      06-11-2010, 05:06 AM   #2
remmib
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I run 40 front and 42 rear.
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      06-11-2010, 05:34 AM   #3
DeadEye
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Nice one, thanks for that.
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      06-11-2010, 10:25 AM   #4
E92-Lighting
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looks fine to me
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