Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Spied: Cadillac XTS spotted testing

The Cadillac XTS is nothing new. We had our first look at the concept in 2009. Since then, we've seen it on auto show floors from Detroit to Beijing.

Goodyear introduces new ComforTred Touring tire

Since its introduction in 2004, more than nine million Goodyear Assurance ComforTred all-season tires have hit roadways in OE applications and in the replacement market. Even after six years of being on the market, it continues to consistently account for more than a million sales annually. It would have been easy for Goodyear to let the ComforTred train keep rolling untouched, but it realized a new version was necessary due to the changing market and emergence of the touring car segment.

Listen: Upcoming Ford Focus ST to employ sound symposer

While BMW employs a digitally sanitized/perfected sound file to give M5 owners the proper sense of aggro urgency when motoring at pace, Porsche went a little more organic with its employment of a sound symposer to feed the 911's flat-six growl into the cabin of the extra-refined 991. Essentially, the sound symposer is an electrically controlled diaphragm in a tuned sound tube that brings the proper engine noises into the passenger compartment. It can be opened and closed by the car's onboard electronics to offer snarl when you want it and serenity when you don't.