Learn from my mistake, re. tires

What new ones did you get ? More ecopia's ?

REV

 

kumho ecowings

 

As a change from my usual positive opinion of the Primacy MXV4s, I called my tire shop today to initiate an exchange of my Primacy MXV4 for the Energy Saver A/S under the Michelin Promise Plan. I will just wait until they become available.

I did the math and the MPG loss was just too great considering that these tires are no longer the day and night difference that I thought they would be. Also, one of the front tires has a conicity issue-- my steering wheel is off center despite a perfect front end alignment.

Sorry to hijack this thread...

 

Glad to hear you swapped (or are going to) them out critic.

I sure would have as well.

REV

 

Do you like them ?

I only had ONE experience with Kumho tires ... and it wasn't a good one .... matter of fact ... it was the worst tire experience I ever had in over 600,000 miles of driving.

Hope you fare better !

REV

 

Put these on in November. It hasn't been enough time to say anything for certain, especially with dropping mpgs in the cold weather, but they seem pretty similar to the OEM Bridgestone tires in terms of fuel economy, ride, noise, etc. The price was certainly right and hopefully the treadlife will be better.

 

To be honest, I have sort of given up on this car in terms of attaining good mpg. It is quite irritating that I can drive my mother's 2010 Altima V6 like a maniac and still beat the EPA estimates. I took the family on a trip to SF a few weekends ago (4 people), A/C on, 70 mph cruising with hard braking and acceleration...and still got 30.5. This was with the OEM tire pressures, and the EPA rating is 20/28.

So, my tire swap (if it works out at all) will be because I may as well get the extra mileage because these Primacys aren't that much better than the OEM tires anyway, as I've learned after some time.

 

Yes they seem fine. After i got them put on i went and put the same air pressure that i had in my old tires. They ride a little bit better than the old ones. They are just as quiet, except on concrete there a little bit louder than the old ones. And after about 100 miles of driving the car said 58 mpg so it doesn't look like i will loose any mpg.

 

Is the hand clalc at the pump or just what the altima says?

 

If they are safer tyres and stop/turn quicker/better than LRR, then I'd say it's worth it. Even if it stops you 3 feet quicker than LRR, that's 3 feet less you're into the object you're trying to avoid. I think in that situation, you couldn't care less about how much fuel you've saved and more about being able to not hit an object. Having been in a fairly big accident myself (and survived unscratched), safety comes first before saving the world and at the end of the day, the Prius does fine to save on fuel as it is when you compare it to a Corolla.

I run Bridgestone RE002 in 215/45R17 (Updated version of the US's RE760) and they are heavy (91 weight rating to remain legal here) but they perform many times better than standard albeit a bit rougher given it's stiffer sidewalls.

 

Comparing fuel economy drop as all due to the model tyre when weather is getting colder and the tyres have different tread-ware amounts is going to lead to wrong conclusions.

My new 200h easily has a 10% fuel economy penalty compared to our '04 Prius with nicely worn Michelin Hydroedges. I plan to shave off some of the penalty by keeping the CT's tyres at max sidewall PSI, and when winter driving is over I'll think about buying a 16" set of wheels that take a narrower tyre from the top of the LRR pick. So long as initial alighnment is ok, I'm fine with buying a lifelong alignment from Firestone to use each time I rotate the wheels.

 

I just wanted to update, I have no MPG drop on my first full tank with the new tires. They handle good, and i happy with them all around.

 

Computer, but computer is always 5% off. So I was still at over 28 mpg.

 

Hi all,
Has anyone tried the Michelin HydroEdge tires on their 2010+? I put a set on our 05 Prius a couple years ago and did not notice any decline in mpg compared to the OEM tires. And the stiffer sidewall and deeper tread made the car less susceptible to crosswinds and the grip was much better.

We've now got a 2010 Prius w/3mm tread depth left after 24k mi. so it's time to get some new rubber for it. So any comments on your experience with the HydroEdge tires on the new Prii would be appreciated.

 

Skorb, most cars claiming high mpg or EPA ratings are now using LRR tires. Manufactures are using them on every vehicle they can to increase their fleet average mpg. I see a lot of non-hy rids running tires like the Goodyear FuelMax and Continental ProContact or Energy Saver A/S.

 

I'm going to guess at least 2-3mpg on the cars over 30mpg. Below that the effect of LRR tires becomes harder to measure but we know it is there. That is where "gallonage" becomes important to measure instead of mpg.

 

FWIW...we spoke with a friend of ours over the weekend who lives in Hemet CA and commutes daily to Riverside. He owns a 2010 Prius 3
with about 41K miles on it.

He replaced his Bridgestone Ecopia EP20 tires ( 195 65 15 ) about 4K ago with the Continental ProContact EcoPlus+ tires and said that
he's getting better mileage with them than he was with the worn Bridgestones.. He stated his calculated mileage went from 47-50 to 49-52 and occasionally 53 with regular easy driving habits. He hates a hard ride so he keeps he tires at 37 psi front and 35 rear.

He also stated they're much quieter than the Bridgestones were and much less prone to aquaplaning in the infrequent hard rains out his way. He aslo stated he looked at the Michelin Energy Saver A/S tires but bought the Continentals because he felt they were a much better value overall.

 

Is the Bridgestone Ecopia EP422 a replacement for the EP100? On Tirerack the EP100 is a closeout. The Michelin Energy Saver is not even listed & neither is the Yokohama dB Super e-spec. I was looking at the 205/55R16 size.