Project lithium 2013 Prius

If someone else rotated your tires and reduced tire pressure or got your tires confused with someone else that could do it. Also right now it's only 45' F in Los Angeles which alone takes 6 to 8 mpg away.

More to the point, you're paying too much attention to your MPG, which is usually when inaccurate measurements happen. Calculate miles per tank by hand and compare it to the car's calculation per tank if you want to ensure you're within the range of accurate.

 

Rotate them back.
If your mpg improve, you know that's what it was. If it doesn't change,
it's something else.

 

I very much appreciate people who rotate their own tires! You're rare & awesome because of that and would do more to assist you than others because of that if you ever need help.

But, like I said in earlier posts, best MPGs are up around 95% of tread. 100% tread is bad for MPG and below 95% gets worse as the miles (tire particulate sheds & poisons streams, aka: 6PPD) roll by.

 

So you're trying to use up the tires with the less tread to get two new ones?

 

Did you adjust the pressures as Prius placard has different pressure front and back?


iPhone ?

 

you can really only tell mpg's by the tank

 

Nose dive driver!!!

 

Only logical reason to put new tires on the rear.
Best wheels on the front are best to steer the car.

 

there is a reason for putting new tires on the rear wheels of a fwd vehicle, i forget, but google knows

 

Some clown at a desk decided that was the way to go. They are wrong.

 

If you rotate them back, and your mpg improves, bingo!
If not, it's another issue. While the wheels are off, you could clean the slide pins for
the brake calipers, front and rear. Fairly easy to do.

 

It's because brand new tires take more than 400 miles to wear in properly and on front wheel drive cars don't get good MPG in that first 400 miles.

 

and grease!

 

The new tire on the rear is policy at places like America’s Tire/Discount Tire.

The reasoning is they are less likely to have a sudden blowout. A front blowout is supposedly easier to control vs a rear blowout.

I haven’t experienced a sudden blowout in a regular/non-run flat in the 30 years I’ve been driving so I can’t say from experience, but I do take care of tires/pressures. I try to every 2 weeks…


iPhone ?

 

new-tires-front-back

new-tires-front-or-back

techpage.jsp

Front-or-Rear

i could go on and on, but here's a well respected fella that disagrees:

should-i-put-new-tires-on-the-front-or-rear-or-how-to-not-kill-puppies

 

Yeah... Seeing as once your rear tires start fish tailing most drivers over-correct and lose control and crash, so that makes sense. Of course if you race front wheel drive cars at the track it's a different strategy.