Haas will trial a new brake manufacturer at the Brazilian Grand Prix to determine whether recent brake issues have been down to current supplier Brembo or its own chassis design.
Haas is running new Brembo brake pad and disc materials in Mexico this weekend in a bid to solve recent issues, which included a failure for Esteban Gutierrez at the U.S. Grand Prix. Team boss Guenther Steiner has ruled out Haas making a full switch to Carbon Industrie this year but will test that manufacturer in one of its cars on Friday in a bid to get a back-to-back comparison alongside Brembo.
The hope is that test will then allow Brembo to properly analyse whether it is solely responsible for recent problems.
"We are testing a different material [in Brazil]," Steiner confirmed. "We have to do back-to-back for next year to see what materials are doing and then we see what the outcome is."
Despite reduced running for both cars during Friday practice, Esteban Gutierrez and Romain Grosjean reported improvements from the new Brembo materials being run in Mexico City.
"The brakes are a bit better than Austin, they are reinforced," Gutierrez said. "As a team we're doing our best to put them in the best condition possible. It's not a great feeling to be in the car knowing the brakes could fail, especially here where we reach 360 km/h."
Grosjean added: "So far it hasn't been too bad in terms of braking. It was a bit better. We're still not exactly where we would like to be, but I haven't been complaining all day."