Just a 5 mm difference in their size or position can affect the car's handling and level of wind noise. (theintelligentdriver.com)
Did some research, removed incorrect information, i still think its an unfair comparison with rolling resistance changing as well in terms of total contact patch (your article has a 40 mm difference between the largest and smallest set of tyres). (mechanics.stackexchange.com)
Just with the anti-roll bars, the Polestar team tested 20 different options, 10 for the front and 10 for the rear, with each bar only having a 0.5 mm difference in diameter — from 20 - 25 mm. (thetorquereport.com)