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Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Wed Apr 24, 2013 11:29 pm
by Ingineer
Boomer, might want to consider an alignment check.

-Phil

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Wed Apr 24, 2013 11:53 pm
by Boomer23
Ingineer wrote:Boomer, might want to consider an alignment check.

-Phil
Thanks, Phil, I should probably do that, though I paid Big O Tires to do just that when they put on the Michelins. At least they offer free alignment checks, but if they got it wrong the first time, re-doing it on the same equipment probably won't do much good, huh? I should at least take it back and tell them what I'm experiencing.

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 7:40 am
by jfsquires
[quote="lemketron"][quote="EVDRIVER"]Any verdict on the new Michelin Energy VS the Primacy? Also, is it worth the expense (if I don't NEED a second set of rims) to upgrade to 17" (Juke or other) wheels? Or can one get the MXM times in a 16" size that works for the Leaf? Costco shows a 91-H 16" MXM, but not the V-rated one sounds like it available in the 17" size... [/quote]

Has anyone considered going smaller - 15" instead of 16 or 17? Probably would be lighter, maybe less expensive. How would handling and braking be affected with smaller wheels?

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 7:56 am
by Stanton
Boomer23 wrote: Thanks, Phil, I should probably do that, though I paid Big O Tires to do just that when they put on the Michelins. At least they offer free alignment checks, but if they got it wrong the first time, re-doing it on the same equipment probably won't do much good, huh? I should at least take it back and tell them what I'm experiencing.
FWIW, when I put my Defenders on a couple of weeks ago, NTB told me that only Nissan had the calibration data for the Leaf, so it wouldn't do any good for them to check. Now, you can say they were "full of it", but I've bought other tires from this location AND had alignment checks done (for other cars), so I tend to believe them. Don't know why the Leaf is different, but you may want to have Nissan check the alignment (because it sure sounds like you have an issue).

BTW, I'm definitely getting better m/kWh (after a few hundred miles) on my Defenders than you are on the MXV's; still not as good as the Ecopia's but within 10% (and they handle much better).

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 8:02 am
by Bassman
I've put about 500 to 600 miles on my Michelin Defenders and so far the efficiency is still down about 8 to 10%, but appears to be improving a little at a time. Steering is abit heavier than the Ecopias, but the handling is very good in the corners. BTW the Defenders are also a LLR tire. I noticed that the 2013 SL model now has 17-inch Michelin Energy tires while the s and SV still have Ecopias. The Energy is the newest LLR from Michelin. I'll bet the price on those 17 inchers is pretty steep.

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 8:12 am
by Stanton
Bassman wrote:I've put about 500 to 600 miles on my Michelin Defenders and so far the efficiency is still down about 8 to 10%, but appears to be improving a little at a time. Steering is abit heavier than the Ecopias, but the handling is very good in the corners. BTW the Defenders are also a LLR tire. I noticed that the 2013 SL model now has 17-inch Michelin Energy tires while the s and SV still have Ecopias. The Energy is the newest LLR from Michelin. I'll bet the price on those 17 inchers is pretty steep.
Based on what I paid for the Defenders, I bet you're right :!:

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 2:03 pm
by Ingineer
Bullshit on the "Only Nissan Has it".

From the Service manual:

Image

-Phil

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 2:05 pm
by Ingineer
Also, Every single chain Tire store alignment I've ever seen is always way off. Go to a racing shop.

-Phil

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 8:24 pm
by DaveEV
Ingineer wrote:Bullshit on the "Only Nissan Has it".

From the Service manual:
Thanks Phil - those appear to be the specs for the front wheels - do you have the specs for the rear wheels, too?

Re: Bridgestone EP422 tires swapped for Michelin Primacy MXV

Posted: Thu Apr 25, 2013 9:08 pm
by Boomer23
Ingineer wrote:Bullshit on the "Only Nissan Has it".

From the Service manual:

Image

-Phil
The readouts that I got from Big O Tire fit well with the recommended settings on this chart.

Anyhoo, I think that I figured out why our LEAF was riding like it was on beachballs on the freeway. It turns out that it WAS riding on beachballs. I had the tire pressures up to 42.5 lbs!! The pressure gauge on the gas station air pump that I used to (attempt to) increase the pressures to 40 lbs was way off. I checked the pressures today with a decent tire pressure gauge and they were all at 42.5. I lowered them to 38lbs and the freeway ride was much more secure and predictable.

Now, what will happen to my already sucky energy efficiency is fairly predictable. Hopefully it won't get much worse, but it certainly won't get any better. :(