PHEV are lighter than EV, the Niro gains 400lbs (over 10%) going from PHEV to full EV and it's already 300lbs heavier going from hybrid to PHEV!

There's also a big difference between what the tires are rated for vs what they usually last... My mother goes through a set of tires every 40k km or so with her Leaf even if the tires are rated for much more and the car's alignment is right on the dot!