Q5 Bob

33 psi cold pressure on mine w/19" wheels. I go a little higher than that, but not too much.

ProAudi

REALLY ??? U like buying gas ????

I run 40 PSI is what the tire says, 44 Max.

The DOOR sticker is a SUGGESTION, NOT LAW.

If U want max life, ad air for equal tire temps across the whole tread.................


The Mech

123Audi4me

Actually, my tires say 51 psi Max. But I don't think that means they should be run at that pressure. Sounds like 36 to 38 is about right for tread life and fuel economy. Handling is probably better at the recommended psi of 33.

m1964

I run 30 psi in the front, 29 in rear-roads here are bad, and both I and my wife have low back pain, so lower PSI helps to reduce pain...and gas mileage too...

spijun

True that the DOOR sticker is not the LAW. It is not a SUGGESTION but what factory recommended (similar for the motor oil, fuel etc)

On my Michelin Latitude Sport wrote: Maxi load 825 kg and max pressure 51 PSI

According to you I should ride on the 46 PSI of pressure That's 50% more than the recommended

Do you know what that means ???

Dozens of engineers and specialists working on the development and testing of tires

I think that the engineers who designed and made ​​the tire along with Audi engineer wrote what is optimal for a tire (vehicle weight, substrate temperature, type of substrate, the inner temperature of the air in the tire, the lateral and longitudinal forces, load, braking forces, etc.....)

I think they know best how much tire pressure should be, or maybe you know something better of them.

If you know better than them, congratulations


Good luck

flybooey

Here we go..

AudiQ5sleeper

I know. I usually run 32PSI only if im on low profile tires. But I keep mine on 39PSI on the Q5. But it all depends how the OP wants his ride to be rough or smooth.

JohnBoyToo

Guess what, we can each do what we want to do - it's our own car and we can set it to whatever we want no matter how wrong it is

You are correct in that the mfg's put LOTS of psi in the vehicle when built and shipped from Europe and stored...
so they don't have a tire bleeding down while in transit only !

Not that it matters in a light car, but in the RV world we have to adjust pressure to ensure that it is high enough to handle the heavy loads..http://www.goodyearrvtires.com/tire-...n-loading.aspx

Max pressure means just that - the max pressure that shouldn't be exceeded COLD)
That's so if the tire says it will carrying 3500 lbs max,
it will only carry it at max pressure...
drop the pressure down and the load carrying ability drops too as shown in the chart below...

Recommended pressure is what the engineers calculated that is the optimum pressure for the expected load of the car and contents - a compromise of load handling, ride quality, and car handling...

The best pressure for your car is the pressure that in normal driving gives the biggest contact patch across the tread on the road...

For years I've been recommending the chalk test to get YOUR psi for YOUR car for YOUR load --> http://www.ehow.com/how_6948382_chalk-tires.html

good luck on your decision !

(but IMHO 42 psi is going to ride like iron wheels on concrete )

AudiQ5sleeper

for sure haha. I wont go any higher than 39 PSI in the Boston.

Parsec

It's funny, out of all things related to a car the 2 things that often set people off are tire pressure and type of gas to use.