OP
txdon
Super Star Member
I have an instant readout and a average readout on the dash that gives the MPG. I put on the new tires and the milage went from a consistent 53mpg to a consistent 43mpg on the Prius.
Tire mystery
- Thread starter txdon
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I have an instant readout and a average readout on the dash that gives the MPG. I put on the new tires and the milage went from a consistent 53mpg to a consistent 43mpg on the Prius.
aczlan
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Is the speedometer still accurate? Were the other tires the stock "low rolling resistance" tires that are slicker than snot when it gets cold out?
Aaron Z
Bird
Rest in Peace
Don, what were the earlier tires? In 1996 I bought a set of tires from Pep Boys for my 1981 F250 truck. I don't remember the brand, but it was some off brand and I only bought them because the truck had those danged 16.5" wheels and my brother had a commercial account at Pep Boys at the time and could get them cheap. I never had a problem with them, except that the tread was about worn out in 10k miles.
OP
txdon
Super Star Member
The speedometer should still be accurate, I have never changed the size of the tire.
The original tires were from Japan, the dealer did not have and couldn't get that brand. The first replacement set were the dealers OEM replacement Goodyear Assurance tires. They could not hold up to the gravel roads and after 15,000 miles, 3 flats, no treads, were replaced. I went to Discount Tire and asked for a tire that would hold up to gravel roads and they suggested the stiffer Pirellis. With 30,000 miles on these I have had no flats and plenty tread left. But of course this leak problem is not good, and apparently they do not have a good rolling resistance.
The original tires were from Japan, the dealer did not have and couldn't get that brand. The first replacement set were the dealers OEM replacement Goodyear Assurance tires. They could not hold up to the gravel roads and after 15,000 miles, 3 flats, no treads, were replaced. I went to Discount Tire and asked for a tire that would hold up to gravel roads and they suggested the stiffer Pirellis. With 30,000 miles on these I have had no flats and plenty tread left. But of course this leak problem is not good, and apparently they do not have a good rolling resistance.
Bird
Rest in Peace
Don, I guess everyone is familiar with the tread wear, traction, and temperature ratings on all the tires, but I don't know of any rating to tell you how they'll hold up on gravel roads.
OP
txdon
Super Star Member
Yep, one of the hidden cost of living in the country.......
dmccarty
Super Star Member
When my truck needed new tires to replace the Firestones, I did some research and made some phone calls regarding prices.
Ended up putting Pirelli's on the F350! Pirelli's have always meant performance tires to me so putting them on a truck struck me as funny. DANGED good tires. When it was time to replace them Discount Tires was not carrying them so I had to put Michelin's on the truck which were/are more money than the Pirellis. The Michelin's are good tires but the Pirlelli's were just as good and cheaper.
Later,
Dan
Ended up putting Pirelli's on the F350!
Pirelli's have always meant performance tires to me so putting them on a truck struck me as funny. DANGED good tires. When it was time to replace them Discount Tires was not carrying them so I had to put Michelin's on the truck which were/are more money than the Pirellis. The Michelin's are good tires but the Pirlelli's were just as good and cheaper. Later,
Dan
Don,
The type of tire material and construction is one of the tricks to get a better mileage rate. They always advertise the Pros and let the consumer find out the Cons. If the other 3 are in good shape and have lots of tread after 30k the leaker was probably faulty, maybe from a different batch.
Lots of folks complain of reduced mileage when going to a longer lasting tire.
On the Prius some even complain of reduced mileage as the car gets older.
Prius Tires | Hybrid Cars
In any event I'm sure you know not to use any type of tire sealant as it will mess up the low pressure alarm system.
How is your battery holding up as to performance and charge capacity?
Ron
OP
txdon
Super Star Member
The Prius has a battery (like all cars) and a bank of batteries that runs the motor along with the gasoline motor. When you take your foot off the accelerator the bank of batteries charge and when you accelerate both the bank of batteries and the gas motor kick in giving it excellent acceleration. In between accelerating and slowing down the gas and battery motors kick in and out seamlessly to give the best gas millage.
The quick get up and go and the interior room were the deciding points between a Corona or a Prius. I really did not care about being green.
The bank of batteries as far as I can tell is working just as it always has. The Prius has 74k miles on it. I was told that the bank of batteries does not all go out at once only one of the bank of batteries would go out at a time.
The reduced 10 mpg gas millage happened right when when we put on the tires and has not changed for 30K miles. However, still getting 43mpg and don't have to worry about numerous flats on these gravel roads is acceptable.
