As noted above, the factory guidance is 39 PSI front/36 PSI rear when cold. This is for the stock 19" wheels on the S5. f you're running 32 PSI I trust that you are talking about 17" wheels on your A5, right? Cause with 19" or larger if you run that low you are highly likely to have damaged rims if you hit a pot hole in the road, and you'd also probably experience premature wear of your tires, especially along the outside edges.Wow that is very high. I dont know if that is the norm over there but here I am running the exact tyre spec 275/30/20 and I dont go anywhere over 32 PSI unless you want a bone jarring ride.
Yup, in the US, 20s are not an OEM option. Are your's 20s? What does your door pillar say for pressures?On UK A5's there is a sticker on the driver's door pillar. It tells you all the correct pressures for all wheel sizes and loads that Audi supplies. Or are you using after market alloys/tires?
The sticker is actually on the door, anyway it reads:Yup, in the US, 20s are not an OEM option. Are your's 20s? What does your door pillar say for pressures?
Don't forget that pressures change slightly dependent on engine sizes, for instance, you need more pressure for the 3.0TDI due to the weight of the engine.The sticker is actually on the door, anyway it reads:
265/30 R20 94Y XL is as follows:
Two passengers (light luggage) Fronts 39 PSI, Rears 36 PSI
Four passengers (heavy luggage) Fronts 42 PSI, Rears 45 PSI.
Ahh, yes. And since his is a cab, a 2.0T coupe would probably need slightly less.Don't forget that pressures change slightly dependent on engine sizes, for instance, you need more pressure for the 3.0TDI due to the weight of the engine.