2015 Volkswagen GTI: Correct Tire Pressures
November 17, 2014
Recently, our 2015 Volkswagen GTI passed its engine break-in period and was then ready for its first instrumented track test. As part of our pre-test protocol, we check and set tire pressures to the manufacturer's recommended values printed on the vehicle's doorpost sticker. When we first put the gauge on the GTI's cold tires, however, each one read 33 psi, or 4 psi lower than what the doorpost recommends.
Read on to see what we did...
We're seeing this more frequently these days, it appears, because the manufacturers (usually the German ones), offer a choice of "Comfort, Standard, or Sport" tire pressures. Our GTI's tires were set to the optional "Comfort" pressure which might offer a better ride, but as the owner's manual reads, Please remember that the lower "Comfort tire pressure" makes the tire 'softer' so that the tire will have a higher rolling resistance. Higher rolling resistance means that the vehicle will have lower fuel economy, increasing the amount of fuel you use and reducing the range of the vehicle.
We set all the tires to the Standard 37-psi value and we'll see if this improves our ailing fuel economy. By the way, the GTI did extremely well at the test track and that update is coming soon.
Chris Walton, Chief Road Test Editor