No they aren't? There is a collective industry move towards larger rims which actually means less tire, but sacrifices comfort in my opinion. But that industry move isn't for EV or ICE cars just a buying audience that seems to like larger rims.
Generally they use the same tires as normal cars/trucks/vans/suv's.
ie. My E-Transit uses the exact same tire as the regular Transit van because it was already rated for a vehicle that maxes out at nearly 10,000lb.
The Hyundai Ioniq EV is the same size as the hybrid version and less than a 100 k heavier.
My Tesla S 70D weighs about the same as Mercedes S-class which is a similar size.
The typical EV where I live, Norway, is a Tesla Model 3 or a Volkswagen ID3. The first weighs 1 600 to 1 800 kg, the second 1 700 to 1 900 kg. That makes the Model 3 less than 200 kg heavier than my Rover 75 Connoisseur which was a similar size.
Generally they use the same tires as normal cars/trucks/vans/suv's.
ie. My E-Transit uses the exact same tire as the regular Transit van because it was already rated for a vehicle that maxes out at nearly 10,000lb.