Bridgestone EP422 tires swapped for Michelin Primacy MXV4s.

KillaWhat said:

What size tires did you go with, and where did you get the Juke Wheels?
Price?

Thanks

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If that's for me, they are from eBay, and are 17 x 7, with 47mm offset (I think).

Stock is 16 x 6.5, 42mm.

Tires are Michelin MXM4 215-45-17.

TonyWilliams said:

KillaWhat said:

What size tires did you go with, and where did you get the Juke Wheels?
Price?

Thanks

Click to expand...

If that's for me, they are from eBay, and are 17 x 7, with 47mm offset (I think).

Stock is 16 x 6.5, 42mm.

Tires are Michelin MXM4 215-45-17.

Click to expand...

It was.
Thanks Tony.
I did some research, but I missed the tire size.
Thanks

If a tire slows the car 1 MPH at 60 MPH, that is much more significant than 1 MPH at 30. The energy needed at that speed is exponentially greater to go from 59 to 60 VS 29 to 30. . I am still curious about these non-scientific tests and would really like to see some accurate data on efficiency differences as I would like some new tires. On a better note I charged to 100% the other day and went from 278 gids to 281! This is with 9500 miles and 20 months of age. Never had 281 before.

TomT said:

I have a similar hill I test with which is part of my daily commute. It's a gradual 3 mile downgrade. With the worn Ecopias, I stabilized at 61mph when coasting. With the new Michelin MXV4s, it was 59. Not much difference. Now that they are worn in some, it is back to 60. Keep in mind that the resolution of the display is only 1.0 so the numbers are somewhat meaningless except to show that there is not much difference, and remember that this was with tires with much more tread depth then the Ecopias, which increases rolling resistance.

TonyWilliams said:

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.

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The resolution of the GPS reads tenths of a kilometer per hour. To get in the Nav maintenance screen:

Audio power off, then:

MAP, MAP, MAP, AUDIO PWR, AUDIO PWR, MAP, Confirmation/Adjustment, Navigation, Sensor Information.

Read "Vgps" in tenths of a kilometer per hour; e.g, Vgps=1000 is 100.0 kmh

To exit, tap screen anywhere, then BACK, BACK, BACK and the entire unit will reboot.

EVDRIVER said:

If a tire slows the car 1 MPH at 60 MPH, that is much more significant than 1 MPH at 30. The energy needed at that speed is exponentially greater to go from 59 to 60 VS 29 to 30. . I am still curious about these non-scientific tests and would really like to see some accurate data on efficiency differences as I would like some new tires. On a better note I charged to 100% the other day and went from 278 gids to 281! This is with 9500 miles and 20 months of age. Never had 281 before.

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Stock Ecopia 205-55-16 tires: 64mph indicated equals 62.137mph / 100kmh GPS ground speed (102.998% fast speedometer)

New Michelin 215-45-17 tires: 64mph indicated equals 61.826mph / 99.5kmh GPS ground speed (103.516% fast speedometer)



New Michelin 215-45-17 tires: 50mph indicated equals 48.467mph / 78kmh GPS ground speed (103.163% fast speedometer)

Saturday, Oct 20, 2012 and very early Sunday morning, Oct 21, 2012:

231.8 miles driven / 52.7 kWh = 4.4 miles per kWh

I drove the new tires the following distances without climate control, starting with full charge with 10% degradation (18.9 kWh usable):


42.7 miles @ 4.8 miles/kWh - House in San Diego @ 45mph to Temecula, garage temp 73F, ambient 60F-63F, elevation 580 feet to 1100 feet, light rain, freeway, lots of hills between 450 - 1350 feet, 7am-8am. 8.9 kWh burned so far.


59.2 miles @ 5.4 miles/kWh - Temecula @ 50mph max (varies) to Diamond Bar, ambient 61F-63F, elevation 1100 feet to 740 feet, light rain, freeway, lots of hills between 550 feet - 1400 feet, 8:50am-10:30am. LBW @ 45.2 miles, VLB @ 53.4, arrive 5.8 miles past VLB; 101.9 miles so far at 5.2 miles/kWh weighted average = 19.596 kWh burned so far.


40.2 miles @ ??.? miles/kWh - Diamond Bar to Newport Beach @ 60mph max (varies), ambient 61F-63F, elevation 1100 feet to 40 feet, light rain, freeway, 1:30pm-7pm.


67.6 miles @ ??.? miles/kWh - Newport Beach to Vista @ 45-50mph max, ambient 67F, elevation 40 feet to 440 feet, light rain, freeway, 12:10am-1:42am.


22.1 miles @ ??.? miles/kWh - Vista @ 45mph max (varies) to home, ambient 66F, elevation 440 feet to 580 feet, light rain, freeway, lots of hills between 400 feet - 740 feet, 3:09am-3:42am


Refueling:

1.75 kWh @ Temecula Old Town, 8:08am-8:44am, Clipper Creek 208v*16amp (0.6 hour * (3.3kW *(208/240))), 1.75 kWh pumped in so far.

18.20 kWh @ Diamond Bar Blink DC charger, 10:30am - 1:30am (estimate from near turtle start of charge with 10% degradation of 18.9 kWh usable minus 0.7 kWh remaining at start of charge), 19.95 kWh pumped in so far.

12.0 kWh @ Fashion Island (Tesla Store), Newport Beach Chargepoint L2, 7:54pm to 12:06am (14.125 kWh at the "pump" / 4.2 hours = 3.363 kW... is this 208v at 16amp from the wall?), 5.12 * 0.84 = 12.0; 30.2 kWh pumped in so far

4.30 kWh @ Vista Walgreen, SemaConnect L2, 1:42am to 3:07am (5.12kWh * .84 = 4.3 kWh)... I don't know if this is 240v 16amp, or 208v at above 16amp), 34.5 kWh pumped in so far.

18.20 kWh @ my house, 3:45am - 10am: (estimate from near turtle start of charge with 10% degradation of 18.9 kWh usable minus 0.7 kWh remaining at start of charge), 52.7 kWh pumped in so far.

TonyWilliams said:

1.75 kWh @ Temecula Old Town Clipper Creek 208v*16amp (0.6 hour * (3.3kW *(208/240)))

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Are you sure that it was 16 amps? Per Phil/Ingineer, the leaf will up the amperage to still get 3.3KW at 208V. This is assuming that the pilot signal allows more, which I assume a Clipper Creek would do.

DoxyLover said:

TonyWilliams said:

1.75 kWh @ Temecula Old Town Clipper Creek 208v*16amp (0.6 hour * (3.3kW *(208/240)))

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Are you sure that it was 16 amps? Per Phil/Ingineer, the leaf will up the amperage to still get 3.3KW at 208V. This is assuming that the pilot signal allows more, which I assume a Clipper Creek would do.

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It is actually placarded at 208v / 16amp !!! I'll call Clipper Creek tomorrow and ask them.

TonyWilliams said:

It is actually placarded at 208v / 16amp !!! I'll call Clipper Creek tomorrow and ask them.

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If the EVSE says 16A, you won't get more than 16A out of it...

drees said:

TonyWilliams said:

It is actually placarded at 208v / 16amp !!! I'll call Clipper Creek tomorrow and ask them.

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If the EVSE says 16A, you won't get more than 16A out of it...

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Well, I actually suspect the "placard", as it doesn't look like it came from the factory. It looks like the standard 30 - 75 amp EVSE box that CC makes.

Tony;
I have my wheels and tires finally.
Some drivel about a hurricane wiping out where I live.
Always some excuse :roll:

Anyway, I now have a VERY technical question about the upgrade.

How Did you get all the wheels and tires in the Leaf to get to the Tire Installation Store?
(I had to order the tires online. Nobody here had them)

Just kidding.
You don't need you to tell me. I'll figure it out.
But I suspect at least one tire is going to wind up on the roof :ugeek:

I'll post pictures when I'm done.

KillaWhat said:

Tony;
I have my wheels and tires finally.
Some drivel about a hurricane wiping out where I live.
Always some excuse :roll:

Anyway, I now have a VERY technical question about the upgrade.

How Did you get all the wheels and tires in the Leaf to get to the Tire Installation Store?
(I had to order the tires online. Nobody here had them).

Click to expand...

Put everything in a trash bags (so the tires don't leave marks) and use that front seat, too. Yes, you might end up with one on the roof.

TonyWilliams said:

Put everything in a trash bags (so the tires don't leave marks) and use that front seat, too. Yes, you might end up with one on the roof.

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Bah! No need to put everything in trash bags! Put them on your hitch mounted cargo carrier (instead of the cooler shown in this pic):



Or make a custom rack like this:

(http://forums.corvetteforum.com/autocrossing-and-roadracing/2369723-tire-carrier-and-hitch.html)

:lol:

I put the Michelin MXM4 tires on the car on Friday, and initial results show a hit to range. Saturday we did 80 miles of driving, with an hour of trickle charging and 10 minutes of QC. I struggled to get 4.0 m/kWh with careful driving at 55 or less, and had expected >4.5. My wife drove the car to work today (63 mile RT) and usually has 11-20 miles left on the GOM, depending on traffic. Today was a faster day but she had 6 left on the GOM instead of 11+...

Hopefully they're improve after breaking in some. I haven't had a chance to test their traction yet, but the tread blocks sure look meatier than the Ecopias.

In black trash bags, two fit very nicely in the rear with the other two in the back seats. That's how I did it when I brought back my four old tires.

KillaWhat said:

How Did you get all the wheels and tires in the Leaf to get to the Tire Installation Store?

Click to expand...

Electric4Me said:

I put the Michelin MXM4 tires on the car on Friday, and initial results show a hit to range. Saturday we did 80 miles of driving, with an hour of trickle charging and 10 minutes of QC. I struggled to get 4.0 m/kWh with careful driving at 55 or less, and had expected >4.5. My wife drove the car to work today (63 mile RT) and usually has 11-20 miles left on the GOM, depending on traffic. Today was a faster day but she had 6 left on the GOM instead of 11+...

Hopefully they're improve after breaking in some. I haven't had a chance to test their traction yet, but the tread blocks sure look meatier than the Ecopias.

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They will break in, but about 1000 miles. Run 45-50 psi. Rated for 51.

I can't comment on the MXM4s but I noted very little difference when I first put on the MXV4s, something like 0.1 M/Kwh... As Tony said, though, regardless, they'll get better as they wear in. New tires are always less efficient than older tires... I run 44 pounds in my MXV4s, which is their maximum sidewall rating.

Electric4Me said:

I put the Michelin MXM4 tires on the car on Friday, and initial results show a hit to range.

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As requested, Here are some pictures of the new setup on the black car.
Also a shot of the new wheels next to a stock Leaf to compare.
Car feels ROCK steady on the road.
Serious difference (improvement) in handling even over the 16" MXV4's.

Guess I have some stock rims and EP422's to sell.

FOR SALE:

4 - Michelin MXM4 P215-45-17 tires with 1000 miles (just broke in, cost $790 new last month)
4 - LEAF TPMS sensors included ($500 value)
4 - Nissan Juke wheels, 17x7x47mm offset ($480 value on eBay)

Lots of other LEAF "stuff"; trunk organizer, two EVSEupgrade Rev2 (16amp), Nissan charge port cover (paid $300, make offer), LED daytime running light bulbs, trailer hitch (paid $260, make offer, never installed), Gidmeter, spare tires from Altima and Nissan van, spare tire mount prototype, stainless bolt kits for main fuse access cover, t-shirts, lots of other crap. I will trailer it all to Santa Ysabel on Nov 17.

Best offer on tires, delivery in my Rav4 to you in Southern California, otherwise FOB San Diego:

Any verdict on the new Michelin Energy VS the Primacy? Pros/Cons? I believe there is a LRR version and non-LRR version of the Primacy as well. Looking to pull the trigger soon as there is a sale and the specs on these tires are confusing. MXM VS MXV?