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Quick Question: Tire pressure for 18"

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Old Sep 7, 2017 | 12:45 PM
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2016 C300
Quick Question: Tire pressure for 18"

Hi guys- When I bought my 2016 C300 4Matic, the dealer was kind enough to swap on these 18" split twin spoke wheel/tires. The sticker in the gas cap door is original to the stock 17" wheels/tires. It reads a normal load of 36 psi.

What tire pressure do you guys recommend for my current 18" wheel/tires? If it helps, the tire size is 225 45 R18. My pressue warning came on, stating they were low, and I pumped them up to about 35 psi this morning. Hope that's in the ballpark!


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Old Sep 7, 2017 | 01:37 PM
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2016 C300 4Matic traded in for a 2022 E450 Coupe
Originally Posted by skhan007
Hi guys- When I bought my 2016 C300 4Matic, the dealer was kind enough to swap on these 18" split twin spoke wheel/tires. The sticker in the gas cap door is original to the stock 17" wheels/tires. It reads a normal load of 36 psi.

What tire pressure do you guys recommend for my current 18" wheel/tires? If it helps, the tire size is 225 45 R18. My pressue warning came on, stating they were low, and I pumped them up to about 35 psi this morning. Hope that's in the ballpark!




36 is recommended for the 19s so I would go with that. I actually use 37 for mine.
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Old Sep 7, 2017 | 05:24 PM
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2017 C43 sedan
I use 42-40
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Old Sep 8, 2017 | 05:39 AM
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From: Bromley, UK
2017 C43 AMG Saloon
Originally Posted by skhan007
Hi guys- When I bought my 2016 C300 4Matic, the dealer was kind enough to swap on these 18" split twin spoke wheel/tires. The sticker in the gas cap door is original to the stock 17" wheels/tires. It reads a normal load of 36 psi.

What tire pressure do you guys recommend for my current 18" wheel/tires? If it helps, the tire size is 225 45 R18.
Pic of my gas tank cover should be attached.
Attached Thumbnails Quick Question: Tire pressure for 18"-dsc_0002.jpg  
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Old Sep 8, 2017 | 08:12 PM
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From: Chicago, IL
2015 C300 sport
Originally Posted by skhan007
Hi guys- When I bought my 2016 C300 4Matic, the dealer was kind enough to swap on these 18" split twin spoke wheel/tires. The sticker in the gas cap door is original to the stock 17" wheels/tires. It reads a normal load of 36 psi.

What tire pressure do you guys recommend for my current 18" wheel/tires? If it helps, the tire size is 225 45 R18. My pressue warning came on, stating they were low, and I pumped them up to about 35 psi this morning. Hope that's in the ballpark!
I have 18" run-flats. 36 psi for all four tires (cold) is what's on the label, but during recent B service the dealership bumped that up a couple notches which is where I've been keeping it.
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