What controls the stiffness, or rigidity, of the sidewall of a race car tire?

• apex
  Apex - controls the stiffness, or rigidity, of the sidewall. How NASCAR Tire Technology Works
• carcass pile
  Apex - controls the stiffness, or rigidity, of the sidewall. How NASCAR Tire Technology Works
• belt package
  Apex - controls the stiffness, or rigidity, of the sidewall. How NASCAR Tire Technology Works

What part of a NASCAR tire acts as the backbone of the tire, providing support and delivering strength to the top of the tire?

• apex
  Carcass Piles - act as the backbone of the tire, providing support and delivering strength to the top of the tire. How NASCAR Tire Technology Works
• carcass pile
  Carcass Piles - act as the backbone of the tire, providing support and delivering strength to the top of the tire. How NASCAR Tire Technology Works
• belt package
  Carcass Piles - act as the backbone of the tire, providing support and delivering strength to the top of the tire. How NASCAR Tire Technology Works

What part of a NASCAR tire includes provides grip?

• apex
  Tread Compound - The part of the tire that provides grip -- the contact patch. How NASCAR Tire Technology Works
• carcass pile
  Tread Compound - The part of the tire that provides grip -- the contact patch. How NASCAR Tire Technology Works
• belt package
  Tread Compound - The part of the tire that provides grip -- the contact patch. How NASCAR Tire Technology Works
• tread compound
  Tread Compound - The part of the tire that provides grip -- the contact patch. How NASCAR Tire Technology Works

What are slicks?

• racing tires with smooth surfaces
  Slicks are racing tires with smooth surfaces. How NASCAR Tire Technology Works
• lubricants for racing tires
  Slicks are racing tires with smooth surfaces. How NASCAR Tire Technology Works
• racing tires with rough surfaces
  Slicks are racing tires with smooth surfaces. How NASCAR Tire Technology Works

How do slicks provide optimal traction?

• because they have no grooves
  Because slicks have no grooves, they have a larger contact patch, or footprint, and provide optimal traction. How NASCAR Tire Technology Works
• because they have a larger contact patch
  Because slicks have no grooves, they have a larger contact patch, or footprint, and provide optimal traction. How NASCAR Tire Technology Works
• because they have a larger footprint
  Because slicks have no grooves, they have a larger contact patch, or footprint, and provide optimal traction. How NASCAR Tire Technology Works
• all of the above
  Because slicks have no grooves, they have a larger contact patch, or footprint, and provide optimal traction. How NASCAR Tire Technology Works

What are sticker tires?

• a brand new set of Goodyear Racing Eagles
  Sticker tires are nothing more than a brand new set of Goodyear Racing Eagles. The reason crew chiefs, drivers and fans refer to new tires as sticker tires is because of the large data sticker label on the tire. How NASCAR Tire Technology Works
• an old set of Goodyear Racing Eagles
  Sticker tires are nothing more than a brand new set of Goodyear Racing Eagles. The reason crew chiefs, drivers and fans refer to new tires as sticker tires is because of the large data sticker label on the tire. How NASCAR Tire Technology Works
• tires that are not Goodyear Racing Eagles
  Sticker tires are nothing more than a brand new set of Goodyear Racing Eagles. The reason crew chiefs, drivers and fans refer to new tires as sticker tires is because of the large data sticker label on the tire. How NASCAR Tire Technology Works

What modifications are NASCAR teams allowed to perform on tires?

• groove depth modifications
  Teams are permitted to trade tires with other teams but no modifications can be performed. The only adjustment allowed to the tires is an increase or decrease in air pressure. NASCAR teams adjust air pressure to improve the car's handling, which can make a big difference on race day. How NASCAR Tire Technology Works
• tire compound modifications
  Teams are permitted to trade tires with other teams but no modifications can be performed. The only adjustment allowed to the tires is an increase or decrease in air pressure. NASCAR teams adjust air pressure to improve the car's handling, which can make a big difference on race day. How NASCAR Tire Technology Works
• no modifications
  Teams are permitted to trade tires with other teams but no modifications can be performed. The only adjustment allowed to the tires is an increase or decrease in air pressure. NASCAR teams adjust air pressure to improve the car's handling, which can make a big difference on race day. How NASCAR Tire Technology Works