The humble tire goes high-tech for electric vehicles
The collaboration began with Ford engineers meeting with Pirelli engineers to explain their goals for the tires, including wet performance, dry, longitudinal and lateral performance and wear, Iorio said.
During the gestation of the Mach-E GT, “we received submissions from Pirelli. They will say, here is our first set of tires and they will share their data. It was about managing torque, achieving range and d ‘be very efficient “, Iorio said Automotive News.
“The GT is total performance. Full torque is generated in less than 500 milliseconds, so it’s incredibly fast and that’s a very high number. We’ve worked closely with Pirelli to ensure tire grip. which we call the longitudinal meow should be set to this time from 0 to 60, ”he said.
Huge electric trucks, such as the GMC Hummer and Rivian’s battery-powered delivery van for Amazon, are even more difficult tests for tire makers.
“They present a greater challenge because of the extra weight of the battery,” said Rohweder of Goodyear. “We are seeing increasingly higher load indices demanded by [vehicle] manufacturers. They want the same functionality as vehicles with internal combustion engines. The tires also need to be heavy-duty to stay on the rim while still struggling to roll over rocks and stumps and through deep, jagged ruts.
“Although electric vehicles have some unique differences from combustion engine vehicles, in particular the way the torque comes into play and the stress on the tires, the overall development and testing of the tires on one of our vehicles are very similar, ”said David Cowger, engineer and technical leader for tires. “We work closely with our tire suppliers during the development process on the various performance metrics to be achieved, as well as the metrics of the vehicle itself. As you may have noticed on the GMC Hummer EV, we have an eight studded wheel model, something you would also see on our HD trucks which produce a lot of torque. “