2011 Subaru Forester Owner's Manual - Page 425

13-8 Consumer information and Reporting safety defects . Tread rib A tread section running circumferentially around a tire. . Tread separation Pulling away of the tread from the tire carcass. . Treadwear indicators (TWI) accessory weight, and normal occupant weight (distributed in accordance with Table 1 that is appended to the end of this section) and dividing by 2. . Wheel-holding fixture The projections within the principal grooves designed to give a visual indication of the degrees of wear of the tread. . Vehicle capacity weight The fixture used to hold the wheel and tire assembly securely during testing. The rated cargo and luggage load plus 150 lbs (68 kg) times the vehicle's designated seating capacity. . Vehicle maximum load on the tire Load on an individual tire that is determined by distributing to each axle its share of the maximum loaded vehicle weight and dividing by two. . Vehicle normal load on the tire Load on an individual tire that is determined by distributing to each axle its share of the curb weight,