Although Tirerack.com doesn't list the Pirelli Zeros in 265/35-21, it seems they do exist. At least Discount Tire shows them at $387/ea: http://www.discounttire.com/dtcs/findTireDetail.do?ra=searchTiresBySize.do&fl=&tc=PIRHZ7&c=2&rcz=75025&pc=10562&ar=35&rf=true&rd=21&rc=TCCINT&cs=265 As for the front, Discount Tire says the Pirelli Zeros don't exist in 245/35-21, but Tirerack.com says they do at $386/ea: https://www.tirerack.com/tires/tires.jsp?tireMake=Pirelli&tireModel=P+Zero&partnum=435YR1P0XL&vehicleSearch=false&fromCompare1=yes So has anyone tried them? They're significantly less money than the PS2s. Also, has anyone checked with the Tesla SC what the P85+ PS2s cost? I heard they had lowered the price to less than Tirerack.com???