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Car: e92 335iA
Default OZ Ultraleggera R18 on e92 - 03-18-2019, 08:06 AM

After a rather long chase for low weight wheels I've kind of stumbled across a staggered set of 8x18 et40 + 9x18 et40 OZ Ultraleggera in mat black.
What shims should I run front (15mm)-rear (12-15mm)? I go for 235/40 and 265/35 combo.
I am not exactly happy about the color as they go to a black e92 however the guy that is to straighten them (they were cheap but not round at all) advise me not to do the chemical paint removal process as they are so light weight.
Is it a real issue, could they get weakened by that process?
Are they very soft or has the PO done a proper medieval stuff to them (2 are bend inside a lot+trembling axial, 2 less bent on inside)?
I don't autoX or anything crazy but the roads are not perfectly smooth around here (Brussels) so I am not keen to let them fix every other month or so... do they hold up fine?


If everything seems under control, you're just not going fast enough. [Mario Andretti]
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Default 06-24-2019, 05:40 AM

Just to conclude for anyone going the same road>
Ultraleggeras 8x and 9x18 et40 are just fine, no need to add spacers (only for looks, technically it clears/works fine), GY Eagle F1 Assymetric 3 (RF version, I was a bit worried about the stiffness/flex of rear axle bushings versus soft rubber sidewalls such as Michelin PS4) was a bit fishy at first, after some 500km they feel much firmer and planted. 9*18 is just fine for this 265 tyre, no ballooning.
More rolling noise from the rear (I choose them cause of low noise ratings however it did not come true in my ear). Grip in wet is perfect, dry also.


If everything seems under control, you're just not going fast enough. [Mario Andretti]
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