NASCAR 101: Tires Part 2 – Tire Wear (Updated)
In the past I have been asked to do more stories about the technology and rules involved in NASCAR so that the new fans, and even some of the older fans, know more about the cars they watch every week and the rules that govern them. So over the next few weeks I’ll be giving you, free of charge, a lesson in NASCAR Tech and Rules.
Pull up a chair, sit down, and don’t distract those around you as NASCAR 101 is about to begin.
Graphic courtesy of NASCAR.
Specs of the Sprint Cup Car are after the jump.
Eligible Models: Chevrolet Impala SS, Dodge Charger, Ford Fusion,Toyota Camry
Engine: Cast iron 358 cubic inch (max.) V8 with aluminum cylinder heads
Horsepower*: 850 @ 9000 RPM
Compression Ratio: 12:1
Torque: 550 ft/lb @ 7500 RPM
Induction: One 4B Holley carburetor
Top Speed: 200 mph (est)
Fuel: Sunoco 260 GTX unleaded; 17.75-gallon capacity
Front Suspension: Independent coil springs Upper, lower “A” frames
Rear Suspension: Trailing arms, coil springs, panhard bar
Chassis: Rectangular steel tubing w/integral roll cage
Body Length: 198.5 inches
Body Width: 74.0 inches
Height: 53.5 inches
Weight: 3450 lbs w/o driver
Front Air Dam/Splitter: 4.5 inches maximum
Gear Ratio: 3.64 to 6.33:1
Spoiler: According to NASCAR specifications
Wheel Base: 110 inches
Wheels: Steel 15″ x 9.5″
Tread Width: 61.5 inches (max.)
Front Brakes: Disc
Rear Brakes: Disc
* Specifications may vary for restrictor-plate races
+ Front splitter applies to NASCAR Sprint Cup and NASCAR Camping World Truck Series; front air dam applies to NASCAR Nationwide Series
Just so you can get an idea as to the difference between a Sprint Cup Car and the version you’d drive away with from your local dealership follow this link to the specs of a 2010 Chevy Impala and don’t forget to click on the dimensions link while you’re there as you’d be surprised at how close the dimensions of the Sprint Cup Car are to the factory production version ( ie. the wheel base is only different by 1/2 of an inch)