TIRE CODES
Tire: Goodyear Eagle Superspeedway Radials
Set limits:
Cup: 4 sets for practice, 1 set for qualifying/start of race and 11 sets for the race
Xfinity: 7 sets for the event
Tire Codes: Left-side -- D-4680; Right-side -- D-4682
Tire Circumference:
Left-side -- 2,222 mm (87.48 in.) Right-side -- 2,245 mm (88.39 in.)
Minimum Recommended Inflation:
Left Front -- 19 psi; Left Rear -- 19 psi Right Front -- 50 psi; Right Rear -- 47 psi
Storyline - Goodyear brings multi-zone tread tire "home" to Atlanta: Goodyear will run its multi-zone tread right-side tire at Atlanta Motor Speedway, which is the track at which this tire debuted in 2013. The multi-zone tire features two distinct compounds across the same tread - the two-inch Endurance Zone that is tougher and can withstand more heat and wear, and the 10-inch outboard Traction Zone that offers more grip. Atlanta provides a tough challenge for tires with its abrasive track surface and long turns. With fall-off likely to be more than three seconds per lap over the course of a run, teams will often choose to "short-pit" in advance of a 50-lap fuel window to take advantage of fresh rubber. In the Cup Series, with 11 race sets of tires in addition to the qualifying set teams will start on, there will be a lot of pit stops. Being early in the season with the new pit rules (with one less crew member over the wall and the new pit gun) pit road will go a long way in deciding the race winner.
"Atlanta is unquestionably one of the toughest challenges we face from a tire standpoint," said Greg Stucker. "The first thing about Atlanta is the track surface, which is very abrasive. To go along with that, it is extremely fast with its long, sweeping turns. Bringing the multi-zone right-side to Atlanta is critical as the Traction Zone helps the cars grip that worn out surface, while the Endurance Zone adds heat resistance and some wear resistance to the inboard portion of the tread that takes the most abuse. The bottom line result of this is good, competitive racing. Tire management will come into play as some drivers will be faster earlier in the run, while others will conserve their tires and be faster later. That creates a lot of passing throughout the field."
Trucks ...
While teams in all three NASCAR Series will run the same right-side tire code (D-4682) at Atlanta this week, those in the Camping World Truck Series will run a different left-side code than those in the Cup and Xfinity Series.
This right-side tire code is a multi-zone tread tire with an two-inch inboard compound designed for heat resistance and a 10-inch outboard compound to give more grip. This is the same combination of left- and right-side tires that Truck teams ran at Atlanta last season.