Hi,
I have heard that different brand tires can make an enormous difference in the average MPG on a hybrid. My 2002 Prius 1 has BFGoodrich Revelation Touring tires which howl like truck tires. During the life of your Prius which brands have you tried and which ones are best MPG??
And... how often do you check/add air to your tires? It seems I have been adding air way too often, I check every two weeks, I watch my MPG's trend down, down , down and when it hits 45mpg - 47-48mpg is normal- I check and all four tires are 5 lbs low! Is it cheap tires? or cheap aluminum rims? Anyone?