The 1998 Pep Boys Indy Racing League was one of relative stability compared to the previous two seasons.

It was also the first complete season for the new Riley & Scott chassis, though it proved unpopular due to its late introduction.

A. J. Foyt Enterprises drivers captured 4 wins, the Indy 500 pole, and the championship, arguably the most successful year in the team's history.

As part of their effort to venture in traditional stock-car markets, the IRL held the second Indy-car race ever, the first since 1969, at Dover International Speedway, and also competed at the reconfigured Atlanta Motor Speedway, which had been raced eight times by Indy-cars in its former shape between 1965 and 1983.

Top ten results The Pep Boys 400K was held on July 19 at Dover Downs International Speedway.

Phoenix: Scott Sharp had 7 points deduction, because his car failed the post-race fuel capacity inspection.

Pikes Peak: Tony Stewart and Robbie Buhl had 15 points deduction each, because the rear wings of both Team Menard cars were found to be in violation of technical specifications.