Classic Porsches' Best Winter Tires Chosen by Arctic Testing

STUTTGART, Germany — Porsche has announced it has set up an exhaustive tire-approval process to choose the most appropriate winter tires for its older models. The tire-approval process has been extended to both "young and old classics," and is based on a tire test program the automaker has been carrying out at the Polar Circle.

Porsche notes that more than 70 percent of all Porsches are still on the roads, but the tires once used on many of the older models are no longer available. Tire treads and rubber compounds have changed with the times as well, which is why Porsche is weighing in with its recommendations for the tires that "harmonize best" with classic Porsche models.

Porsche has been testing tires at the Arctic Driving Center in Rovaniemi, Finland, on models including the 911, 928, 964, 993 and 996, and the first Boxsters.

The recommended tire list is now available at all Porsche Centers and from Porsche's Web site.

Inside Line says: Just in time for winter, and maybe a new set of winter tires under the tree this Christmas. — Laura Sky Brown, Correspondent