I will lower them.

Thanks again for the tip. Thats why I love this community.

 

Anytime! We are here to help each other 24/7. :

 

Excellent! I used to have individual tire pressure display on my Infiniti M35. I've missed it with my Audi. Will be glad to have it again rather than seeing the light come on and guessing which tire needs air.

 

I'm getting "choppiness" on my GS premium with Dunlops filled to 33 all around. Any suggestions?

Thanks

 

If I bring the rear tire pressure to 31 cold on my car it really makes the ride much smoother no matter what speed but since I want to have some road feel I kept it back up at 33/33. I have the F-Sport with 19 inch rims and adaptive suspension which dampens the ride very well.

I suggest you do 33/31 F/R. That is the pressure I used on my 2006 Lexus GS with 18 inch wheel options to keep the ride planted and choppiness free at speeds above 75 mph and it worked well over the 5 years with my Michelin all season tires and did not wear the tires fast. I was still able to get 45k out of those long lasting Michelin Primacy MXV4 tires I purchased for the car.

What speeds are you getting the choppiness at?

 

Do check your tires with a gauge as the TPMS always says 2 PSI below actuality and I am not sure why. If it is 33 on the TPMS, the tires really show 35 psi with the 3 accurate gauges I have in hands (electronic and non-electronics).

Lexuspeter, your cold pressure is really likely to be 35 psi F/R. Bring it down to 33/33 F/R with a gauge and your car TPMS will say 31/31 instead. See how that feels. Otherwise decrease rear to 31PSI cold if still choppy and measure that with the gauge to make sure.

Thus, my TPMS show 31/31 F/R while the actual pressure measured at each tire is 33/33 F/R cold. Sorry for missing this out to everyone.

My Audi A8L also shows the tire pressure to be 2 PSI less than the real pressure.

 

I set my tires at 37 psi all around cold. My digital hand gauge and TPMS both confirm 37...

 

I start to notice it about 40mph. ( even on smooth roads) I have the tires set at 33. I've got the 18 in wheels.

 

Thanks for the suggestions. My own digital gauge reads the same as the TPMS. Have others noted "choppiness"? I will try to make the rears 31 and see what happens.