Some systems require immediate spin up after touchdown,spoilers, antiskid etc.Ergo it's beneficial to only have the spinup AFTER touchdown.The wheels are smaller than the big wheels of the WW2 bombers,that did investigate the feasability of having the Tires totating prior to touchdown to relieve the spinup shock on the undercarriage(sidewall pockets were installed to catch the airflow to start the spin)not sure how far this developement went as all tires today are smaller profile.
