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TomT
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Tue Feb 12, 2013 3:08 pm

It's easy to make a tire lighter when you have sidewalls the thickness and robustness of paper like the Ecrapias! :lol:
EVDRIVER wrote:Sorry Primacy MXV4 is 23 lbs. 3 more than stock which is a big difference in unsprung weight. On the freeway this is not an issue but for in town is a hit. The Primacy MXV4 is the best performer of the lot with the MXVM in second. The HP is a cheaper OEM tire, The tires on the 2013 LEAF are Energy AS and are lower grade OEM tires.
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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EVDRIVER
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Tue Feb 12, 2013 6:40 pm

TomT wrote:It's easy to make a tire lighter when you have sidewalls the thickness and robustness of paper like the Ecrapias! :lol:
EVDRIVER wrote:Sorry Primacy MXV4 is 23 lbs. 3 more than stock which is a big difference in unsprung weight. On the freeway this is not an issue but for in town is a hit. The Primacy MXV4 is the best performer of the lot with the MXVM in second. The HP is a cheaper OEM tire, The tires on the 2013 LEAF are Energy AS and are lower grade OEM tires.
Yes, the Michelin is Primacy HP is the same as the Ecopia. How much of a difference did you see between stock and the MXV4, what was the biggest improvement now that you have more miles. Same observations as earlier?

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TomT
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Tue Feb 12, 2013 10:49 pm

The observations I first made back when still hold true today. And the tire is wearing spectacularly well. I would definitely buy it again.
EVDRIVER wrote:
TomT wrote:It's easy to make a tire lighter when you have sidewalls the thickness and robustness of paper like the Ecrapias! :lol:
EVDRIVER wrote:Sorry Primacy MXV4 is 23 lbs. 3 more than stock which is a big difference in unsprung weight. On the freeway this is not an issue but for in town is a hit. The Primacy MXV4 is the best performer of the lot with the MXVM in second. The HP is a cheaper OEM tire, The tires on the 2013 LEAF are Energy AS and are lower grade OEM tires.
Yes, the Michelin is Primacy HP is the same as the Ecopia. How much of a difference did you see between stock and the MXV4, what was the biggest improvement now that you have more miles. Same observations as earlier?
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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EVDRIVER
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Tue Feb 12, 2013 11:45 pm

Do they have white walls?

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TomT
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Wed Feb 13, 2013 10:18 am

No, but they do come with wire spokes...
EVDRIVER wrote:Do they have white walls?
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
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Stanton
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Wed Feb 13, 2013 12:42 pm

This thread got me thinking about how my stock tires won't make it to my 2 yr inspection, so I priced out some Michelin Defenders--supposedly a LRR "green" tire alternative to the MXV's. Not only are they cheaper, but they have a longer warranty (90k vs 60k).
Anybody put a set of these on their Leaf yet?
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EVDRIVER
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Wed Feb 13, 2013 1:19 pm

Stanton wrote:This thread got me thinking about how my stock tires won't make it to my 2 yr inspection, so I priced out some Michelin Defenders--supposedly a LRR "green" tire alternative to the MXV's. Not only are they cheaper, but they have a longer warranty (90k vs 60k).
Anybody put a set of these on their Leaf yet?
Those are lower quality and performing tires compared to the Primacy MXV. The factory tires on the 2013 LEAF are also cheaper OEM tires.

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TomT
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Wed Feb 13, 2013 1:37 pm

This is why: UTQG: 820 A B
Very hard rubber with very mediocre traction...
Stanton wrote:This thread got me thinking about how my stock tires won't make it to my 2 yr inspection, so I priced out some Michelin Defenders--supposedly a LRR "green" tire alternative to the MXV's. Not only are they cheaper, but they have a longer warranty (90k vs 60k).
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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Stanton
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Wed Feb 13, 2013 1:59 pm

TomT wrote:This is why: UTQG: 820 A B
Very hard rubber with very mediocre traction...
So that means what with respect to what? The stock tires on the Leaf or the Michelins? Also, wouldn't you want a LRR tire over a NON-LRR tire (when available)?
2011 Blue Ocean SV w/floor mats & window tint
12v LiFePO4 battery & FIAMM 74100 horns
Wet Okole seat covers (front)
Tor's low-power heater mod
2013 sun visor
3G modem upgrade
L2 EVSE Upgrade
Battery Pack replaced (Rev E) @51 months and 41k miles

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Nubo
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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Wed Feb 13, 2013 2:17 pm

Stanton wrote:
TomT wrote:This is why: UTQG: 820 A B
Very hard rubber with very mediocre traction...
So that means what with respect to what? The stock tires on the Leaf or the Michelins? Also, wouldn't you want a LRR tire over a NON-LRR tire (when available)?
Treadwear = 820, Traction = A, Temperature rating = B

By comparison, Ecopias are 400 A A

The MXV4 = 620 A A

So, traction is rated "A" for all 3. All else being equal, the Defenders have about double the treadwear as the Ecopias, the MXV4 falls in the middle. The Defenders have somewhat lower temperature rating than the other 2.

http://en.wikipedia.org/wiki/UTQG" onclick="window.open(this.href);return false;
I noticed you're still working with polymers.

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