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TDI Fuel Economy Discussions about increasing the fuel economy of your TDI engine. Non TDI related postings will be moved or removed.

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Old June 3rd, 2011, 11:28   #166
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Old December 19th, 2012, 19:29   #167
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Join Date: Apr 2012
Location: NW Wisconsin
TDI(s): 2013 Passat
Fuel Economy: 51.3 Best @ 65mph/300mi trip
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Don't waste your time.
I get rid of my 160lb Girl Friend, and noticed a 1.2mpg increase this last year.

However, last yr's winter was mild, and she was great in pushing me out of drifts, so I'm considering reconcilliation at this point, and she was good for the ride,though she has lost 30lbs.
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Old December 20th, 2012, 05:46   #168
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Location: Indianapolis Metro Area
Fuel Economy: 50 mpg

Replacing my faulty turbo actuator and getting Michelin Defender XT tires is the difference between me getting 41 mpg and 45 mpg consistently. Adding in some hypermiling got me to 51 mpg on a tank doing just my in-town commute. I would like to see what I can get on a long-trip, now.

I had mine installed at Sam's Club, where they were (and are, again) offering an instant savings about $70-80. They usually run this and a Goodyear offer.... you can usually get one, of not either, of these all of the time.
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Old July 30th, 2015, 13:44   #169
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I rode in a tdi with Michelin Hydroedge tires and they sounded like big lug mud tires. The road noise!!!! Holy crap!!!! I won't be buying those.
06 jetta tdi dsg BRRRRRRMMMMMM
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Old July 30th, 2015, 13:49   #170
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Fuel Economy: 50/45/37

Originally Posted by gilberjj View Post
I rode in a tdi with Michelin Hydroedge tires and they sounded like big lug mud tires. The road noise!!!! Holy crap!!!! I won't be buying those.
I don't think you will, because I don't think they've made them for some time. They were replaced, more or less, by Defenders.
2002 Jetta wagon, 373K, RC3+; 1993 Mercedes-Benz 300D 2.5, 197K; 1997 Passat, 286K; '99.5 Golf, 259K; 2011 335d, 56K; 2015 Golf Sportwagen, 10K. Principal, http://www.idparts.com
Kid's cars: 2002 Golf TDI, 2002 Jetta TDI
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Old July 31st, 2015, 17:17   #171
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Talk about bringing a thread back from the dead!! It started back when 90K tires were shipped for $55 each, and ended 2.5 years ago. Until yesterday, that is...
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Old July 18th, 2016, 19:20   #172
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A slight drop in rpm at cruising speed is good for some additional mileage, as long as the tire isn't lots heavier.

I have stock 16" wheels on my 2014 JSW. I am considering a ~0.7" diameter increase, and 2 pound per tire increase in weight from OEM with the following Conti:
205/60R16 91H
91 is the lower weight limit (~1300 pounds instead of ~1500)
The H rating is 130 mpg, not 150mph. Same rating as OEM tire:

Stock tire is a 205/55R16 91H ContiPro Contact

It will drop the revolutions per mile from 837 to 808

That's just a 3.5% drop in rpm at ANY speed. There's certainly enough torque to handle this under most situations.. It is a subtle change.

Any thoughts?? I've done this before (Passat) with a modest gain in FE, but that was a slightly stronger engine (2013 NMS TDI).

ONE other thing... wear rating of the Pro is 400, and for the EcoPlus Pure Conact it's 700. Traction is rated identical.
Lost my JSW to a reckless MB E350 sedan driver blowing a stoplight:
Working on a replacement project:
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