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Old 08-12-2017, 02:17 AM
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TYRE PRESSURE

HI
I have a 612 and have recently fitted new wheels / tyres

Can you help with the tyre pressue please

Perellis
Front 245/35ZR20 (95Y)
Rear 305/35 ZR20 (104Y)

thanks
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  #2  
Old 08-12-2017, 04:08 PM
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Those are not standard 612 rear size tires (285/35 20 OEM), so the closest in the 2009 OM is 33 F, 30 R. With the larger rear tires, I would try 33 psi F&R and see what that does for you. All the tire pressures Ferrari recommends are developed empirically by a test driver, so in this case, that is you. Adjust accordingly if you do not like the feel with 33/33 as a baseline.
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Old 08-13-2017, 01:37 AM
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I run mine with a higher pressure in the front versus the rear, about 10% difference. I believe that's per Ferrari recommendation and seems to work well although I am on standard 612 challenge wheels with MPSS.
As an aside I saw my rear tyres get up to 60c whilst on our Italian road trip!
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