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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old February 24th, 2018, 13:31   #1
JKC_NC
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Default 2015 DSG vs 6M

I own a 2015 Passat TDI SE 6M 50k miles, bought new, that will be sold back soon. (17 inch wheels)

Today I bought a 2015 Passat TDI SE DSG with 41k miles that has phase 1 of the fix applied. (18 inch wheels)

If anyone wants info comparing the 6M vs DSG versions of the EA288-equiped Passat, I am in a good position to provide comparison data or opinion.

I add wheel info because it might impact performance/ride comfort impressions.

Cheers
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Last edited by JKC_NC; February 24th, 2018 at 13:56.
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Old February 26th, 2018, 09:16   #2
740GLE
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Cruising RPMS at 75mph. Wheel size shouldn't affect the speeds if you're using sock size rubbers.

Our 15 DSG is right at 2000 and is amazing on the highway. Our 12 DSG was more like 23-2400RPMS.
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Old February 26th, 2018, 17:05   #3
joshuafail
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Quote:
Originally Posted by 740GLE View Post
Cruising RPMS at 75mph. Wheel size shouldn't affect the speeds if you're using sock size rubbers.

Our 15 DSG is right at 2000 and is amazing on the highway. Our 12 DSG was more like 23-2400RPMS.
IIRC, 2015 got a slight gearing difference along with EA288.
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Old February 26th, 2018, 20:36   #4
turbobrick240
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Quote:
Originally Posted by 740GLE View Post
Cruising RPMS at 75mph. Wheel size shouldn't affect the speeds if you're using sock size rubbers.
Sock size rubbers? Must be a Michelin man.
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Old February 27th, 2018, 04:32   #5
740GLE
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just a fan of RHCP
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Old March 9th, 2018, 19:33   #6
JKC_NC
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Last weekend I swapped the nearly bald and stock 215/55/R17s (Conti's) on Sonoma wheels (50K mi - from my old 6M) with nearly new 235/45/R18s (Bridgstone's) on Bristol wheels (from my newly purchased DSG w/40K mi on the clock). I drove the 6M last week with the new, larger wheels/tires.

A week after the swap:

Subjectively, I like the looks of the Bristols better. The Bristol/235/45/18 setup has more grip and takes corners better. I can’t tell a difference in acceleration. Highway ride is better (quieter, more comfortable/less harsh on rough pavement or potholes) on the Sonoma/215/55/17 setup. I can’t speak to braking performance because I barely use brakes, and essentially never brake at the limit of traction! MPG? The 18 inch setup is about 5 mpg worse than the 17 setup per MFD. I’m not sure if this is due to 1) tire/wheel weight 2) tire width 3) tread wear differences…but it is a significant difference. Mpg figs are 90+% hwy @ 70-80 mph (70 mile, 65-70 minute one-way commute)

The 17” wheels are a few lbs lighter than the 18”, the 17” tires a couple lbs lighter, cheaper, ride better, and get better MPG than the 18”. Add it up and I’m keeping my old 17” wheels on my “new” DSG, even at the cost of selling my “buyback” with “better” wheels and good rubber. I will eat the ~$500 on the new tires and still think I come out ahead. Until buyback, I’ll enjoy the better looks and cornering on my 6M! (while keeping the miles off my “keeper”)

My observations may be “no duh” to some but it was interesting for me to actually experience/observe the ride quality and mpg difference between the two “same rolling diameter” setups.
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Last edited by JKC_NC; March 11th, 2018 at 07:16.
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Old March 9th, 2018, 19:49   #7
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Quote:
Originally Posted by 740GLE View Post
Cruising RPMS at 75mph. Wheel size shouldn't affect the speeds if you're using sock size rubbers.
Our 15 DSG is right at 2000 and is amazing on the highway. Our 12 DSG was more like 23-2400RPMS.
I can confirm that gearing in the 2015 TDI DSG and 6M is the same (at least in 6th gear). Both turn 2000 rpm at 75 mph. This is true on both cars with the 215/55/17 and the 235/45/18 setups (which are both the same diameter). I also understood that the earlier DSGs had lower gearing than the 6M which is NOT the case for the 2015 per MY observations.

on (another) topic...I rarely shower in a rain coat, but if I were to do so...It WOULD require a large sock size rubber
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Black '15 Passat SE TDI, 6-speed manual (buyback pending, B: 4/2015)
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Last edited by JKC_NC; March 9th, 2018 at 19:57.
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Old March 10th, 2018, 11:37   #8
BroncoAZ
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Quote:
Originally Posted by JKC_NC View Post
Highway ride is better (quieter, more comfortable/less harsh on rough pavement or potholes) on the Sonoma/215/55/17 setup.
Thanks for confirming my suspicions on the 17” vs 18” wheels. I looked at going to a set of 18” takeoffs, but ended up keeping my Sonoma wheels with a set of Pirelli all season tires.
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Old March 12th, 2018, 14:25   #9
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We just purchased a 2014 Passat. (I know you guys are referencing the 2015 model) It came with the factory 18" package. My first set of 18's and I felt they ride rough and was curious on their affect on mileage! I also noticed while checking on the tire weights is that the 17" is just under a 1/2" narrower than the 18" and the 16's are another 1/2" narrower and I was curious if it would make a difference on fuel mileage. Thanks for the real life data. Apparently I better get my 18's on CL before this gets out and they won't sell. lol.
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Old March 13th, 2018, 05:25   #10
740GLE
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if FE is your concern, get 16" rim and enjoy the plush ride of a 215-65-16 series sidewall.

That's what we run for winter set up and is near perfect bliss with this winter freeze that cycles we've had.
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Old March 13th, 2018, 05:34   #11
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I was thinking that for winter tires as well. I figured they would work better here in MN in the winter. I am looking for a set of 17 for the summer. They go pretty fast on CL here.
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Old March 13th, 2018, 08:11   #12
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I replaced the crappy 235x45x18" Hankook OEM tires after I had the car for a year and went with 235x55x18" General Tires RT43 tires. Much improved bump absorbing quiet ride.
Many years ago the norm was a 75 sidewall tire and not those ridiculous low profile tires. I see some ricers that must have a 25 tire, about 1.25" high sidewall.
Plus the 55 gives me just a bit more clearance over the many Mexican speed bumps I encounter in the winter.
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Old March 13th, 2018, 09:53   #13
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5 mpg difference from 18" wheel to a 17" wheel with the same ODs? Hows that even possible?
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Old March 13th, 2018, 16:19   #14
fjdiesel
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I put on the 215/65r16's today. In a Continental which is the same brand I took off in 18's. The factory 18's with 1/2 wore tires were right at 46#'s(wheel and tire) and the new 16's with factory 2015 Jetta alloys came in at 44.6#. Just an FYI for everyone.
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Old March 13th, 2018, 17:29   #15
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Just for what it's worth, Continental and General is the same tire company!
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