Goodyear Debuts New Left-Side Tire for Iowa Speedway Cup Race
NXTbets Pro | Published On: August 5, 2026
Goodyear tire update
Goodyear Racing will bring a new left-side tire to the NASCAR Cup Series race at Iowa Speedway, giving teams a fresh piece of the package for the weekend at the 0.875-mile track. The right-side tire stays the same one used there last season, so the change centers on how the left side handles the demands of the fast, compact oval. Goodyear said the new left-side tire has an updated construction and compound built for Iowa’s high speeds and heavy loads. The company also said the tire is meant to create more wear and more fall-off, two factors that can change how teams manage pace, balance and strategy over a run. Rick Heinrich, Goodyear NASCAR product manager, said the company worked with the industry to put together a tire package ready for Iowa’s demands. That points to a setup shaped around the track’s specific load and speed profile rather than a broad one-size-fits-all approach. The combination gives Cup teams a new left-side option while keeping one side of the car familiar, which should help teams lean on prior data while adjusting to the new wear pattern Goodyear wants to build into the race.
Iowa Speedway setup
The tire plan for Iowa did not come together in a vacuum. A tire test in Newton, Iowa helped determine the setup for the weekend, and Austin Dillon, Noah Gragson and Tyler Reddick took part in that session. Their work gave Goodyear and teams a better look at how the package responds on the track and how the new left-side tire fits with the existing right-side tire. That matters at Iowa, where the track length and surface characteristics put a premium on load control and tire management. Goodyear’s goal was clear, to build a tire that can withstand the track’s speed while still wearing enough to affect the race. The company’s description of the tire points to a setup that should reward drivers who can manage grip over the long run and teams that can dial in balance as the race unfolds. Cup teams will have 11 total tire sets for the weekend, including four wet-weather sets, which gives crews room to adjust if track conditions change. The tire allotment adds flexibility, but the central story remains the same, Goodyear has changed one half of the Cup package at Iowa to match the demands of a track that asks a lot from its tires.
O'Reilly tire package
The tire story extends beyond the Cup Series. For the O’Reilly Auto Parts Series race, teams will use a familiar tire combination that has already been run this season at Indianapolis, Pocono, Darlington, Rockingham, Bristol and Dover. That gives the series a package with a strong recent record and a clear data trail from several different track types. The familiar combination should help teams move into the weekend with a known baseline rather than starting from scratch. It also creates a contrast with the Cup setup, where Goodyear is debuting a new left-side tire while leaving the right side unchanged from last season. In the O’Reilly race, the repeat tire combination gives crews a steadier setup path, and the main challenge becomes adapting that package to Iowa Speedway’s specific demands. Taken together, the two series show how Goodyear is tailoring its approach for the same track in different ways. Cup teams get a new element designed to increase wear and fall-off, while O’Reilly teams get a package already proven across multiple venues this season. The result is a weekend built around tire management, with the Cup race driven by a new left-side change and the O’Reilly race anchored by a combination teams already know.
