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Just wondering what the correct tyre pressure should be for a 20" rim.

I dont have the sticker inside the door panel to guide me.

Am i correct in saying on the quattro cars the pressure should be the same on all tyres?

I noticed a few posts while using search which say front and back are different on some of the A5 models.
 

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Q: 20in wheelers, what's your Optimal Tire Pressure

I'm at 38 front and 40 rear, 275/30 Toyos all around.
TPMS just went off, maybe it's time for me to tinker with different values.
 

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Just merged the two threads.
 

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Just came back to find no responses.
 

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According to this TSB (re: the steering wheel vibration issue), 20" wheels on an S5 running 265/30 tires should have 44/36 PSI in the front/rear, respectively, under normal load.
 
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