The phrase "wider track" refers to the distance between the left and right wheels of a vehicle. A wider track means the wheels are placed farther apart, which can improve stability and handling. Full definition
The new car is also slightly longer and wider than before, with a 0.4 - inch wider track and 1.8 inches more overall length. (automobilemag.com)
To enhance the dynamic experience, it has a 36 mm wider track, at the front and at the rear, and a rear roof spoiler to generate down force at speed. (ausmotive.com)
It also rides on a 3 - inch - longer wheelbase and a slightly wider track. (edmunds.com)