Michigan track surface receiving extra prep work before race:

Michigan International Speedway is doing some extra preparation to its track surface before the return of NASCAR action next weekend. The speedway has been utilizing a ‘tire dragger’ – which is dragged along the surface to help apply extra rubber – since the beginning of the week and plans to continue to use it through Tuesday of next week. The tire machine is being run every day for eight hours a day, officials said. It’s the same device used by Kentucky Speedway after its repave and Bristol after it ‘polished’ the lower racing groove. ‘We elected to do it because we work closely with and listen to NASCAR and the experts who drive the track – the drivers, who say the racing will get that much better when the top groove gets rubbered in and widens out,’ said Sammie Lukaskiewicz, the speedway’s vice president of marketing and communications. ‘It’s fast here, as you know. So having a wider groove will allow cars to pass each other and allow three-, four- and five-wide passing.’(Motorsport)(8-22-2016)