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2000 c230 kompressor
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373 Posts
Discussion Starter #1
i was looking for an answer last summer but i didnt get a straight one, i just need to know what psi i should be running on 225/40/18 fuzion zri tires it says 50 psi max on the tire but i think thats way too high, im running em at 32 now so any help is appreciated thanks
 

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2002 ML320
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1,951 Posts
I too follow the decal in the gas filler door...
 

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2000 Mercedes-Benz S500. Sold: 2000 C230K, Sold: 1997 Porsche 944S
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1,271 Posts
Tyre pressure is determined by the Car Manufacturer NOT the Tyre Manufacturer.
The Car Manufacturer is the one who spec'd the car, not the thousands of tyre mfgrs. in the world.

Mine? 32PSI Rear, 28PSI Front.
It's in my Owner's Manual and the Door Pillar.


i was looking for an answer last summer but i didnt get a straight one, i just need to know what psi i should be running on 225/40/18 fuzion zri tires it says 50 psi max on the tire but i think thats way too high, im running em at 32 now so any help is appreciated thanks
 

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2010 C200 CGI /W203/SLK230/W202/230E/280SE
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3,301 Posts
The sidewall will say not to inflate beyond 40 or 50 psi for the risk of damaging the plies and probably yourself !!

That is a max pressure not to exceed.

Bruce
 

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1996 MB C280
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371 Posts
i was looking for an answer last summer but i didnt get a straight one, i just need to know what psi i should be running on 225/40/18 fuzion zri tires it says 50 psi max on the tire but i think thats way too high, im running em at 32 now so any help is appreciated thanks
I run 34 rear & 32 front but I have big sidewalls. It will really depend on your driving style, as to which will determine the best pressure for you.

Since you are running low profile tires I would suggest 36 rear / 34 front. This will avoid damage to your rim and comfort really won't change much.

Also you may need to adjust PSI depending on wearing. If it wears on the outsides then you need to add air, if wear is only in the middle then release some PSI from the tire.
 
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