Hmm, well I don't really want to get into a discussion of the drag curve of a Q3 here, but I would conjecture that as skin friction drag rises with the square of the velocity, we are seeing next to zero drag from the mud on the car when driving at legal speeds, especially compared to the Q3's interference and form drag, also part of the overall effect of parasitic drag.One thing that helps is keeping your vehicles exterior clean since that helps to cut down on wind resistance. Maintaining the exterior is even better if you take pride in a flawless exterior.
Why did you decide on 33 when the consensus seems top be 44 and the B pillar says 44?Just did another 300+ miles in my wife's Q3 (we split the driving "duties" about 50/50), and this time it was almost all winding back country roads with speeds from 30 to 60 mph.....result: 29.9 mpg.
So with less than 1000 miles on the car, and while running on 33 lbs of pressure in all four tires....we are getting a comfortable ride and good mileage.
That's a good question....but the answer is simple, 33/is the pressure that was in the tires when we picked it up from the dealer (just as your dealer set your tires too, as I recall.)Why did you decide on 33 when the consensus seems top be 44 and the B pillar says 44?
Please do! Our Q3s came with 44 so I left it there. As it cools down for Fall/Winter these pressures will drop a bit. I am happy with the ride at 44 but have not tried it as 33 to see how it feels.That's a good question....but the answer is simple, 33/is the pressure that was in the tires when we picked it up from the dealer (just as your dealer set your tires too, as I recall.)
The owner's manual (pages 202-203) indicates 33/33 psi is the proper pressure for "normal" operations and 44/46 is the pressure under "maximum load." But it also clearly states the B-pillar numbers take precedence.
We are enjoying the performance and ride of the tires set at 33/33, but tomorrow we'll increase the pressure to 44/46 and give that a try. I will report back the results if there are any noticeable operational differences between the two pressures.
I re-RTFM last night & it describes 33 PSI for 3 "normal" sized passengers.Just read something interesting. My older A4 had a B pillar sticker with pressures depending on car load. Evidently, the gummint decided that was confusing for drivers so mandated that ONLY the max recommended pressure should appear on the B pillar! So the 44 likely is max and 33 likely minimum for the Q3.
I think I am going to try running 38 for best handling, wear and mileage.
After being "goaded" into it by others on this forum, I increased the pressure in my tires from 33/33 to 44/46, but not without a little discussion with a couple of my Audi service reps....and we came to the same consensus as you, Q3User.I re-RTFM last night & it describes 33 PSI for 3 "normal" sized passengers.
44 PSI would be for max load as calc by looking at what's printed the B-Pillar plate and subtracting how much a total of 5 passenger weighted.
This will tell you how much "stuff" you can carry along with your 5 people.
That said, I agree with your proxy of halfway between the Max & Min & will crib it for my settings.