I would reduce that to ~36-37psi per tire. Mine were 49psi when I got it, and might be what messed up my TPSM during the early months of ownership.

You may also want to check them with an actual gauge to confirm if you've not done so already, I noticed the computer in the car differs slightly from my hand gauges, but gives you a pretty close reading. I just wanted to check mine myself because I had a hard time believing they had 49psi from the factory and through the computer/sensors were whack.... at that time they were reading pretty close to correct so I let about 12psi per tire out. I'm guessing once they seated the tires on the rims, they didn't check the actual pressure and just left it as is.

You're only going to be letting a few pounds out, so I'm not sure that'll soften the ride like you're expecting. The lower profile tires and sportier suspension are going to ride a little stiffer no matter what you do with your tires.

 

My psi setting is 41 before winter starts as the cold weather usually lowers the tire pressure.

 

Mine are usually set at factory recommendations all summer with any car (only had mine the last month of it.)

In winter I bump it up to 38 and keep an eye on it.. It's been in the teens here all week and set at 38 on a 65 degree day now they are 34 at startup and hover at 36 while driving...

Remember if they are 41 cold you are around 43-44 warm... Might stiffen it up some

 

My RT also was delivered with 48/49 PSI. I lowered them to 36 by gauge which reads 36/37 on the display. I've always had my vehicle set at factory recommendations. The RT rides much better now. Very harsh ride at 48 and not good for the tires.

 

I think 49 psi is way too high. I run mine at 36 psi COLD. well technically, at COOL. its been down to freezing here in Myrtle Beach with this storm and I've noticed they start at 33/34 psi and quickly warm up. I may add a couple psi to bring them up to 36 psi COLD for the winter.

obviously, observe the recommended tire pressure on the door sticker. having said that, I believe that either under or over inflation is the major cause of tire wear, besides alignment issues. I've learned to keep mine at the 36 psi when cold and run around town when warmed up at 39/40 psi.

 

The dealer should have reduced the psi before delivery. The factory pumps them up to close the allowable max to prevent flat-spotting while the truck is in shipping and on the dealer lots. Dealer did the same thing with my Citadel- delivered with 43 psi

Kevin

 

Mine are all off just a bit, two are about a pound high and two are low by the same amount. I take a good quality gauge and all are the same pressure all around. I usually keep them at about 40psi. When I got my D there was 10psi difference all around, not unusual with a dealer in my opinion. Even at a tire dealer, when getting new set of tires many of them will use the gauge on the tire machine and call it good. I have checked the tires in front of them and made them even them out.

It's more important to watch the wear on the tires and adjust accordingly. Low pressures will sometimes make tires wear more in the middle, as the tires will kinda cup up in the center and cause some scuffing there. Too high will make the tire ride in the center and scuff the outside edges. Seems backwards but that has been my experience. Find the pressure that keeps the most tread on the pavement and that will be the best ride and best for the tires.

My advice is free and worth it!

 

I think you're a bit backwards with how the tire wears, or you also had an alignment issue:

 

Thanks, old thread, but helpful for us new owners, when I saw the PSI I was like WTF, I *assumed* it was way over spec - just did a couple of rounds of pressure reduction, gauge and TPS are reading almost exactly the same, down into the 36/37 area, not feeling every pebble now (I was thinking the R/T was almost __too__ stiff ... it's perfect now).