Mixing up brake pads on a race car can seem counterintuitive at first glance but NASCAR Cup teams often do it on purpose in order to work around the rules and anyone wanting to be competitive at Phoenix this weekend will be trying it.
The NASCAR Next Gen car is mostly assembled with single source parts so teams can’t build custom suspension or brake components but brake pad compounds are not ...Keep reading

Source: How NASCAR's top teams work around the rules using brake pads