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NASCAR tyre supplier Goodyear has warned Cup Series teams to obey its tyre pressure advice at Phoenix this weekend given the higher speeds likely under the 2019 rules.<\/p>\n
The full higher downfore and increased horsepower rules package – designed to increase overtaking – will be used for the first time at Phoenix.<\/p>\n
That combination will result in higher speeds and increased tyre loading, and Goodyear racing director Greg Stucker warned that teams tempted to run lower than advised pressures for set-up reasons risk both higher wear and potential deflations.<\/p>\n
“When we tested on this package at Phoenix last fall, teams were considerably faster than we’ve seen in recent years,” said Stucker.<\/p>\n
“With the extra downforce versus the 2018 rules package, much of that speed comes through the corners – which generates higher loading on the tyres.<\/p>\n
“Teams will need to be mindful of our recommended air pressures as they develop their set-ups to optimise grip.<\/p>\n
“Running below our minimums can cause the sidewall of the tyre to flex more and over-deflect, generating more heat, higher wear and fall-off, and even damaging the tyre to the point of air loss.<\/p>\n
“Finding that balance will be key.”<\/p>\n
Goodyear is bringing new left and right-side tyres to Phoenix for both the Cup and Xfinity series.<\/p>\n
The left-side tyre features a construction update that Goodyear will be rolling out for many tracks this season, while the right-side tyre features a compound change designed to introduce more tyre wear and run cooler.<\/p>\n
Phoenix is the only track at which these two tyre types will be used together this year.<\/p>\n
The combination came out of a Goodyear test at Phoenix last October involving Denny Hamlin<\/a>, Matt Kenseth<\/a>, Kyle Larson<\/a> and Paul Menard<\/a>.<\/p>\n Get unlimited access to the world\u2019s best motorsport journalism with Autosport Plus<\/strong><\/a><\/em><\/p>\n<\/div>\n