Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-12-2011, 08:41 PM   #1 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Testing rolling resistance of the Various Tires of the Suzukiclone Fleet (RE92 wins)


(ForkenSwift sporting the winning tire: Bridgestone Potenza RE92's, OEM low-rolling-resistance tire of the 1st generation Honda Insight.)

So, on the weekend as you may have seen already, I did some rolling testing of the six (6) different sets of tires that are currently in the Suzukiclone fleet. (Seven sets, if you count the spare tire donuts, which I also tested.)

I wanted to find out which tires had the best rolling resistance performance (and which ones had the worst).

This info probably may not be particularly useful to anyone else unless you have the same tires. (Which is unlikely, with the exception of the Bridgestone Potenza RE92's, which are still available. And maybe the Goodyear donuts. )

All the wheel/tire sets were mounted on the same car (ForkenSwift), which was rolled down a gentle hill onto a flat run-out.

Long story short, here's what I learned:



Order of testing - it was sort of an "A-B-C-D-E-F-G-H-A" test...



The how

  • All testing was done by mounting the wheels/tires on the ForkenSwift
  • Tires were set to 51 PSI
  • I drove each car the same distance to an empty parking lot with a small downhill entrance/exit opening on a level run-out area
  • Start: car was stopped with the hand brake at a marked position on the hill, transmission placed in neutral and the brake released
  • Finish: after coasting to a stop (max speed < 10 km/h / 6 mph) each run's "end" position was marked on the road with chalk.
  • 3 - 5 runs were done for each set of tires
  • drove back to the shack, swapped the wheels/tires
  • the hydraulic brakes were not used at all during the testing, to avoid as much as possible having the front brake pads dragging on the brake rotors after use
  • rinse and repeat

Conditions:

24 C / 75 F - clear & dry
wind WSW 12 km/h (~7 mph)

Here's a pic of the test area, with an accurate representation of the RE92's average finish position compared to the average finish for the donuts (@ 70 psi):



You can see it wasn't that steep a hill. Maybe a 2 foot elevation change. (From: Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Poll Results )

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 33 Users Say Thank You to MetroMPG For This Useful Post:
3dplane (12-27-2011), bespurcell (10-05-2015), Bicycle Bob (01-10-2012), brucey (01-23-2012), California98Civic (10-13-2011), Crashy (06-08-2018), Daox (10-12-2011), diamondlarry (12-30-2011), ECONORAM (12-16-2012), elhigh (08-14-2015), euromodder (10-13-2011), Fr3AkAzOiD (10-14-2011), Gasoline Fumes (10-16-2011), HyperMileQC (12-27-2011), Hypermiler1995 (07-18-2015), JonNC (11-20-2011), JRMichler (08-12-2015), ldjessee00 (01-10-2012), leew (11-15-2015), mcguire (11-22-2011), MobilOne (09-28-2015), mohammad (07-04-2022), Natalya (06-22-2017), niky (08-08-2014), OBD1Kenobi (07-13-2015), PaleMelanesian (10-18-2011), RobbMeeX (12-09-2012), SentraSE-R (01-23-2012), Sven7 (01-31-2012), Tango Charlie (10-13-2011), UFO (01-19-2012), viio (03-08-2012), Xusn96 (08-12-2015)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-12-2011, 08:44 PM   #2 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Moral of the story: obviously... tire choice can have an enormous impact on vehicle efficiency!

Stuff I learned:
  • I was surprised how much better the RE92's were - not only did they have the best result overall, but they also had the biggest improvement when looking at the difference between each set of tires.
  • The spare tire/donut performance surprised me. Part of me hoped they would have magical properties. Instead they were awful.
  • PSI over 50 seemed to make little to no difference with the RE92s:
The next day I did a test of tire pressure vs. rolling resistance using the RE92's in the same parking lot. I went from 20 to 70 PSI in 10 PSI increments, 3 runs per increment. From 20-50 PSI, there was a measurable improvement each time. At 50, 60 & 70 PSI, there was no significant change in finishing position - the ending 9 chalk marks (3 PSI x 3 runs each) were mixed & clustered together along a 4.5 foot line.

I've done a test like that before: www.metrompg.com/posts/tire-pressure-rolling-resistance.htm
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 10 Users Say Thank You to MetroMPG For This Useful Post:
bespurcell (10-05-2015), Bicycle Bob (01-10-2012), COcyclist (09-02-2015), Crashy (06-08-2018), drees (01-03-2012), F8L (10-13-2011), JethroBodine (10-12-2011), Kodak (10-12-2011), PaleMelanesian (10-18-2011), Rick Rae (10-13-2011)
Old 10-12-2011, 09:30 PM   #3 (permalink)
Master EcoModder
 
Kodak's Avatar
 
Join Date: Feb 2011
Location: USA
Posts: 346

Canyon - '07 GMC Canyon 2wd regular cab
90 day: 24.95 mpg (US)
Thanks: 41
Thanked 39 Times in 24 Posts
Interesting test, and kudos to you for mounting and unmounting your wheels so many times just for some real data.
__________________
EcoDriving: Turning more fuel into usable forward motion.
  Reply With Quote
Old 10-12-2011, 09:38 PM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Yeah, it took a stupid amount of time to do this.

Initially I just wanted to know if the RE92's were better than the Blackfly's Invictas. But then I just kept going

Oh well, it made for a neat picture.
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 10-13-2011, 01:21 AM   #5 (permalink)
F8L
EcoModding Apprentice
 
F8L's Avatar
 
Join Date: Oct 2011
Location: Sacramento, CA
Posts: 152

F8L's 2012 Prius - '12 Toyota Prius Three with Solar Roof
90 day: 62.14 mpg (US)
Thanks: 15
Thanked 34 Times in 25 Posts
I'd love to see these kinds of tests with current popular LRR tires like the Energy Saver A/S, Fuel Max, Ecopia EP100, dB Super E-Spec, ContiProContact w/EcoPlus, Nokian enTYRE, etc.

If only we were rich huh? lol
  Reply With Quote
Old 10-13-2011, 09:32 AM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Yup, that would be nice.

Supposedly official LRR ratings for new tires are coming for the US market - but I haven't been keeping up with the details.
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 10-13-2011, 03:53 PM   #7 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Quote:
Originally Posted by MetroMPG View Post
  • PSI over 50 seemed to make no difference with the RE92s:
The next day I did a test of tire pressure vs. rolling resistance using the RE92's in the same parking lot. I went from 20 to 70 PSI in 10 PSI increments, 3 runs per increment.
FYI, I posted the details & charted the result of this test in this thread: http://ecomodder.com/forum/showthrea...tml#post265379
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 10-13-2011, 05:02 PM   #8 (permalink)
Master EcoModder
 
Join Date: Nov 2010
Location: Atlanta
Posts: 403

Sweetie - '11 Hyundai Sonata GLS
90 day: 39.35 mpg (US)

My Miles - '03 Combo GLS/KLX/Ninja
90 day: 40.49 mpg (US)

Sipper' - '04 Kawasaki Ninja 250
90 day: 74.98 mpg (US)
Thanks: 1
Thanked 37 Times in 28 Posts
That's an awesome post.

Been looking at some Nokian Hakka C Van tires to replace my Kuhmo's.
__________________
This ain't a war, anymore than a war between men and maggots. Or, dragons and wolves. Or, men riding dragons, throwing wolves at maggots!
  Reply With Quote
Old 10-16-2011, 12:27 AM   #9 (permalink)
Too many cars
 
Gasoline Fumes's Avatar
 
Join Date: Oct 2009
Location: New York State
Posts: 1,599

CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
Team Honda
Gen-1 Insights

Insight 5342 (no IMA) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 66.3 mpg (US)
Thanks: 1,353
Thanked 797 Times in 475 Posts
Awesome job! But the "donuts" in the pic look a lot like yellow GTi wheels!
__________________
2000 Honda Insight
2000 Honda Insight
2000 Honda Insight
2006 Honda Insight (parts car)
1988 Honda CRXFi
1994 Geo Metro

  Reply With Quote
Old 10-17-2011, 12:14 PM   #10 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Good eye. Yes, they look a lot like Suzuki Swift GTi wheels photoshopped to be yellow for that picture.

Aside from the pic below, I didn't take profile pics of the different wheel/tire combos...



from: http://ecomodder.com/forum/showthrea...uts-19094.html

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com