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  #1  
Old 19-03-2014, 12:40 PM
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I've got some 215/45 r17 tyres and wanted to know if Im running the right psi and what you guys run?

ive got it on 32front and 34back
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Old 19-03-2014, 12:42 PM
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Check inside your drivers door. Pretty sure for that size its 32 front 29 rear

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Old 19-03-2014, 12:43 PM
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Not sure on official answer, but I have the same size tyre and run 39 front 37 rear. Anything less and you may get premature tyre wear.

The front tyres should be inflated an extra 1-2 psi more than rears to my understanding.
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Old 19-03-2014, 12:48 PM
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Run 40 in both, what I got told or else you'll get sag and wear
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Old 19-03-2014, 12:52 PM
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35psi front and rear
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Old 19-03-2014, 01:05 PM
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Recommended front 33.5 rear 27.5. Im running front 35 rear 31 cold

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Old 19-03-2014, 01:06 PM
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I run 36/34 (f/r) on 225/18/40
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Old 19-03-2014, 01:15 PM
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People who are running more than 34 ... are you setting your pressures hot or cold?
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Old 19-03-2014, 01:36 PM
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Mostly done late at night, so... cold?
How much are they going to expand in the heat/when warmed up?

When I got my tyres put on, John said they'd take 38/40 just fine and to just watch my tyre wear and adjust accordingly if I encounter any noticeable wearing at the edges or across the middle section of the tyre.
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Old 19-03-2014, 01:36 PM
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40 PSI F&R, usually cold. I do the same for cars at work with tyres 45 profile or below.

Going on 50k kms and they're still evenly worn with about 40-50% tread remaining.
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