Re: Gas type and shudder
I was getting annoyed with the vibration/shudder so I played around with the tire pressure and retorqued the wheel lug nuts. I had the dealer install 265 65 R18 Blizzaks before I took delivery and I have driven enough miles that I was certain the tires/wheels were contributing to the problem. All 4 wheels needed the nuts torqued only one wheel was completely torqued I was also running 40 psi (max 44) in the tires, I reduced the pressure to 36 psi. I noticed an improvement right away the drone of the MDS is still there but there is no harshness anymore, I usually put the ERS in 5 for city/country driving and only use D on the interstate just to help the mileage some. Remember it is important to check wheel torque after 100 mi with a new vehicle or whenever the wheels are taken off.