I have a 99 A4 1.8T Quattro, with stock tires. I was reading the tire pressure sticker inside the fuel door and am a little confused about what it says. I searched the forum and found nothing on this. I was wondering if someone can help to clarify it.

The sticker has the following info:

Front

Bar psi kPa
2.1 32 210
2.8 42 280

Rear
Bar psi kPa
2.1 32 210
2.9 42 290


I know what psi is. But what is Bar and kPa and why are the numbers from the front a little different than the rear?

Thank you in advance for any input.

 

1.013 BAR = 14.69 pounds/square inch

 

Cmon now, their just different measurements.

Like Yards vs. Meters.

Just use the PSI rating that you should be used to.

They are min and max ratings. If I were you, I would run about 37-38 PSI all around.

 

Pardon my ignorance but I actually had not heard of the bar and kPa measurement units. I've always dealt with psi units in the past. But now I know they're all just measuring the same thing.

Thanks for the replies guys.

 

1 Bar is one atmospheric pressure, =14.6 psi

kPa is kilopascals (metric)