My 2010 Prius (w/ 115k miles) has been on 17" FR-S wheels as long as I've owned this car and was showing 42 mpg on Trip A over the last 20,000 miles. I thought I could bring that up when I recently installed new Pirelli LRR tires about 300 miles ago. I never paid attention to mpg in this particular car as I've been a Prius owner so long I know Priuses will get 40+ no matter how you drive them. BUT, I just calculated my mpg for the first time and it was an abysmal 38 mpg after the first 311 miles on my new tires. Indicator showed 40.2 mpg. Does anybody know why? When I owned a Gen 2 I got 50mpg easily and my driving style hasn't changed much. There are a couple things I can think of such as (1) they're brand new tires (2) I haven't checked (inflated) the tire pressure yet to my ideal 40 psi and (3) I'm still running heavier 17" wheels, but all that shouldn't take my mpg under 40. I also read a thread about FR S wheels from 2013 here and those guys were claiming 46+ mpg. I'm pretty disappointed. Is it my car? Does being a high mileage oil burner have to do with any of this? NGL, if I can't fix this, it really makes me want to sell my car... Thanks!
It's common to see a decrease in fuel efficiency with new tires. More tread equals heavier, stiffer tire. Posted via the PriusChat mobile app.
Isn’t that the recommended pressure. I don’t think your MPG issue is caused by tires. Suggest you check brake drag, air filter, egr.. ps. My 2010 Prius with 17” OEM rims is doing something like 43MPG. Just had egr system cleaned and hoping MPG to improve. My brakes do not drag and filters are new
All manufacturers want that. Half a liter or even more per 100km. I dont understand why they were let to do that. New cars now have more accurate numbers. Maybe the WLTP or something forced them
I had the same thing (not the same tire but Michelin CrossClimate2), check the brakes. after replacing rear rotors and pads, MPG climbed from 38 to 45
what priuschatter uses the recommended tire pressure. We all know we all like to overinflate slightly to hypermile, at least that was the case when I was more active on this forum 10 years ago, lol. Anyways I just pumped up psi to 40 and hoping for some improvement.
You could also disconnect the positive on the 12V. Wait like 5-10 minutes and then reconnect it. Take her out for an hour and let her reset. http://www.RedBullet.net https://ProjectLithium.com/?ref=mG0GE http://www.Pulstar.com http://www.PlugOutPower.com Use code 7373 http://www.hybridpit.com Use code azusa http://CatStrap.net Use code azusa
