I purchased 4 new low resistance Michelin Fuel Savers tires at 68k miles for my 2012 Toyota Prius C. For 3 1/2 years and immediately before I had it new tires, I enjoyed excellent MPG and I admit I’m OCD with watching mpg screen enough to know my daily habits.
With this new tires and all tires are set 41PSI…I still get POOR mpg with no changes! I almost never reach 50mpg on any trips!
Before new tires: My AM commute to work…always 53 to 56mpg, my PM commute to home, 52 or so.
New tires: My AM commute to work…barely 43 mpg! maybe 45!, my PM almost never reach 40!
What gives! I e-mailed Toyota service dept, they said did I lose wheel cover? (WTF? It’s the same cover I still have it!) then he said, they need to check into it for $150. No way I’m paying $150! that’s like another tire! Ugh!
What may be the cause? I purchased Mechilen Fuel Savers with LRR tires as recommended. I feel sick to my stomach every time I see piss-poor mpg.
Hope you guys and gals can help me figure out what MAY be the cause. I’ve been driving with this new tires little over 1,000 miles already including 1 day trip to southern California (that trip, 37mpg and 41 back, where the same trips I took before always 54 average depending on the weather and wind directions)