What would be the best tire pressure for the standard 19 inch tires?

 

This is listed inside of gas tank flap.
I believe they are 32 psi all around.
I typically keep mine at 34 psi though.

 

It depends on the load and what tires you are running. I am using XL (extra load) tires and they are designed to run a bit higher pressure, and do not reach designed load capacity until 41 psi cold. I tow a lot and carry a fair amount of weight so I run 41 front and up to 45 rear. My gas flap lists that for heavy load, and 35 all around for a light load. If I ran lower pressures the tires would not wear well.

 

 

I run 41 Front/45 Rear for better cornering feel and better tire wear. I found when I ran with the lower pressures the edges of the tires had excessive wear.

 

35lbs cold. I've gotten 42000 miles on my OE Dunlops with annual rotations. I like a firm but not rock hard ride.

 

I have a 2015 ML and have always run 36 PSI all the way around and got 40,000 miles on the original OEM tires.

 

I've been running with 36 psi all around lately....

 

 

I have the Pirelli scorpion verde all season plus (107H) tires on my 2013 ML350 and I run them at 48 psi cold, which gets them to 50 psi hot.

 

 

That does also seem high to me. Definitely be careful on rough pavement. The likelihood of tire damage is increased.

 

These tires are rated at 50 psi max and I run them at that for better feel economy, max load capacity and optimal handling. I find the ride to be excellent at higher psi, but I like a firm ride. I drive on gravel roads regularly and have never had problems with these Pirellis. They are excellent tires.

It is not optimal to follow the recommended psi on the gas tank unless you still are rolling on the factory tires, as different tires have different ratings. Just my two cents.

 

Good to know. Keep us posted. :-) I'm still on factory tires now, but would like to know about other options for when I eventually change mine out.