thankyouOB
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Leaf Number: 1442
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 5:32 am

i have done a few more chrge-full of trips, and the m/kWh are definitely down sharply; last night the 53-mile trip took 10 bars and the average was 3.8m m/kwh.
I never had a trip under 4.1 m/kwh before and it generally was around 4.5 and often more.
so, i am thinking more and more about what it could be besides a few pounds extra in the car for four tires.
may reserve/delivery 4/30/11
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ECOtality/LADWP/ Blink 4/4/11
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Gardena Nissan, msrp -1k
red SL with etec L3
SOLAR POWERED since 2008

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TomT
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Location: California, now Georgia
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 7:05 am

Something is wrong somewhere. I drive the same route every day for work and have since the car was new (well, actually, my company moved to a new facility in the valley this month so that will no longer be true as of today) and when I went from the Ecrapias to the Michelins, my average trip mileage fell from 4.4 to 4.3... I was running 40 pounds in the tires at the time (44 now).
thankyouOB wrote:i have done a few more chrge-full of trips, and the m/kWh are definitely down sharply; last night the 53-mile trip took 10 bars and the average was 3.8m m/kwh.
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.

thankyouOB
Posts: 3583
Joined: Mon Feb 21, 2011 11:14 am
Delivery Date: 30 Apr 2011
Leaf Number: 1442
Location: Coastal LA

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 7:41 am

TomT wrote:Something is wrong somewhere. I drive the same route every day for work and have since the car was new (well, actually, my company moved to a new facility in the valley this month so that will no longer be true as of today) and when I went from the Ecrapias to the Michelins, my average trip mileage fell from 4.4 to 4.3... I was running 40 pounds in the tires at the time (44 now).
thankyouOB wrote:i have done a few more chrge-full of trips, and the m/kWh are definitely down sharply; last night the 53-mile trip took 10 bars and the average was 3.8m m/kwh.
thanks. i will have the balance checked and up the pressure -- in two steps.
may reserve/delivery 4/30/11
--
ECOtality/LADWP/ Blink 4/4/11
--
Gardena Nissan, msrp -1k
red SL with etec L3
SOLAR POWERED since 2008

thankyouOB
Posts: 3583
Joined: Mon Feb 21, 2011 11:14 am
Delivery Date: 30 Apr 2011
Leaf Number: 1442
Location: Coastal LA

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 3:35 pm

the various online factoid sites on tires (tiretrack in particular) says the Michelins are about 4 pounds heavier per tire, 19 lbs vs. 23.
does that make that much difference, as I am off about 10% in m/kwh.
may reserve/delivery 4/30/11
--
ECOtality/LADWP/ Blink 4/4/11
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Gardena Nissan, msrp -1k
red SL with etec L3
SOLAR POWERED since 2008

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LTLFTcomposite
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 3:42 pm

A set of tires would have to be pretty bad before I'd consider replacing them before they are worn out. Guess I'm not too discriminating when it comes to such things.
LTL
White 2012 SV delivered 10 Dec 2011 returned 25 Nov 2014 replaced with stopgap ICE Sentra
[35 months] [35K miles] [9 Bars]
2013 Volt replaced after 36 months/30k miles with ICE Rogue
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TonyWilliams
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 3:52 pm

LTLFTcomposite wrote:A set of tires would have to be pretty bad before I'd consider replacing them before they are worn out. Guess I'm not too discriminating when it comes to such things.
I've already worn out one set of Ecopias in 25,000 miles on the previous LEAF. Since I do NOT foresee these tires coming close to meeting the lease terms on my current LEAF, and I don't buy new tires for the dealer when I turn the car in, I just bought the Nissan Juke wheels and 215R45-17 Michelin MXM4 Primacy tires to enjoy while I'm driving the car.

Then, at turn in, I'll pop the 7000 mile Ecopias back on. I can sell the Juke wheels/tires for a substantial portion of what I paid for them.

So, you see, there are methods to the madness.

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Electric4Me
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Location: Union City, CA

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 4:24 pm

I'm still having a hard time picking my next tire, but I need to make up my mind this week! I'm really leaning towards one of Michelin's non-all season tires, but still with the "Low Rolling Resistance" rating. I just don't need an all season tire in the Bay Area. I'm thinking about the Energy Saver summer tire. The MXM4 does seem like a fun tire though. Any rolling resistance observations to share Tony?
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TonyWilliams
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 4:28 pm

Electric4Me wrote:Any rolling resistance observations to share Tony?
I hope to have those on the car in a few days, and we'll see how they perform!!!

For rolling resistance test, I have my favorite test hill just a few miles away. I'll be able to tell pretty quick if there is any significant loss (or gain?) of rolling distance.

We've had some freakishly warm weather here yesterday and today, so I'll have to wait for the air density to come back down to "normal".

Michelin Performance Rating:
9 Wear Life
10 Fuel Efficiency
10 Handling
10 Braking
9 Comfort

thankyouOB
Posts: 3583
Joined: Mon Feb 21, 2011 11:14 am
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 4:48 pm

TonyWilliams wrote:
LTLFTcomposite wrote:A set of tires would have to be pretty bad before I'd consider replacing them before they are worn out. Guess I'm not too discriminating when it comes to such things.
I've already worn out one set of Ecopias in 25,000 miles on the previous LEAF. Since I do NOT foresee these tires coming close to meeting the lease terms on my current LEAF, and I don't buy new tires for the dealer when I turn the car in, I just bought the Nissan Juke wheels and 215R45-17 Michelin MXM4 Primacy tires to enjoy while I'm driving the car.

Then, at turn in, I'll pop the 7000 mile Ecopias back on. I can sell the Juke wheels/tires for a substantial portion of what I paid for them.

So, you see, there are methods to the madness.
madness to my method, too.
two out of four of my Ecopias were ruined; one by a gouge and a bubble in the sidewall from going through some kind of road hazard. i had brought them in for a leak that was repaired, and the repaired tire was too damaged to survive a second patch.
the damage to the tire structure made me feel the damn tires were not up to standard, particularly when working with no spare.
i guess i could have gotten just two new ecopias.
i think of it as my low-end version of a third house with a car elevator.
may reserve/delivery 4/30/11
--
ECOtality/LADWP/ Blink 4/4/11
--
Gardena Nissan, msrp -1k
red SL with etec L3
SOLAR POWERED since 2008

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TomT
Posts: 10645
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Mon Oct 15, 2012 5:20 pm

The Ecopias were easily "pretty bad..."
LTLFTcomposite wrote:A set of tires would have to be pretty bad before I'd consider replacing them before they are worn out. Guess I'm not too discriminating when it comes to such things.
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.

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