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Old 08-21-2020, 03:58 PM   #11 (permalink)
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Lightweight vs Aero

FYI

Thank you for your posting I also have had a struggle or justifications on wheel choices and wheel cover

My first hand insight is as follows

Toyota OEM 15 inch 5x100 lug wheels /rims 19 lbs (8kg)(alum/alloy) from what the forums and others have stated additionally the tire is somewhere around 17lbs coming in at 36 lbs....

In the USA tirerack online purchase has Enkei J10 15 inch wheel 5x100 lug for $127 US dollars these are a Japan owned manufacture in Thailand to my understanding ... these scale in at 14-15lbs so 28lbs making 115-113lbs to the current 144lbs I currently have via 19lbs x 17lbs tire /wheel setting 30lbs reduction if I had the Enkei...

Enkei has more lighter 15 inch wheel Enkei RPF1 4x 100 lug scaling in at 9.5lbs so 26-27 lbs with tire.

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Old 08-22-2020, 01:00 AM   #12 (permalink)
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Keep in mind that since the wheel is closer to the center than the tire, reducing the weight of the wheel will have less effect than reducing the weight of the tire. On the highway you probably wont notice a difference in weight, there it doesn't really make much of a difference. I've loaded my Insight down with hundreds of pounds of stuff for traveling to college, and it doesn't make any difference in a fuel economy on the highway at all. Hills may be slightly slower, and the car may coast little faster and further down the hill, but the fuel economy remains unchanged. Weight reduction helps around town, aerodynamics helps on the highway. If you can get both, that's great, but that really depends more what kind of driving you do the most.
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Old 08-22-2020, 11:22 AM   #13 (permalink)
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I don't think weight affects highway driving that much. When I switched to steel wheels and 31s, I added about 16 lbs per corner. I still average 21 mpg with mostly highway driving.
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Old 08-23-2020, 11:53 AM   #14 (permalink)
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Quote:
Originally Posted by Leinaad View Post

Thanks. Cd is 0.315, my Passat had 0.32 not that much improvement for 15 years age difference.
If you have the new Octavia 4, Cd is 0.26. The previous model has 0.31 indeed.

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I got a different lower grill yesterday which is partially closed that should help a tiny bit, will install when it gets a bit cooler.
I only remove the lower grill cover on tropical days, ~ 30C is the turning point for me. It's pretty safe unless you're going to drive around like crazy


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Originally Posted by Leinaad View Post
Did a little trip after work today and got the consumption down to 4.3 l/100km at an average speed of 66 km/h (top speed 110 on the highway)
That's good, especially with a new car that has yet to be run in. I expect even better numbers with that new TDI evo engine.
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Old 08-23-2020, 04:11 PM   #15 (permalink)
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Quote:
Originally Posted by TexasCotton View Post
Toyota OEM 15 inch 5x100 lug wheels /rims 19 lbs (8kg)(alum/alloy) from what the forums and others have stated additionally the tire is somewhere around 17lbs coming in at 36 lbs....
Regarding tire weight, I asked Michelin and Bridgestone for oficial numbers while searching wheels for my previous car.

Michelin Alpin 4 195/65 r15 7.8 kg 17.2 lbs
Michelin Alpin 6 195/65 r15 8.2 kg 18 lbs

Bridgestone Turanza T005 195/65 r15 7.5 kg 16.5 lbs
Bridgestone Turanza T005 205/60 r15 9.3 kg 20.5 lb

I switched fdom my winter setup steelwheel 6jx15 et45 + Alpin 4 15.9kg 35 lbs total per wheel to Autec Wizard 6.5jx15 et38 + T005 14.3 kg 31.5 lbs total per wheel and didn't notice a difference. But I only drove them for 2 tanks before the engine started doing weird things.

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If you have the new Octavia 4, Cd is 0.26. The previous model has 0.31 indeed.
It's an Octavia 3, probably one of the last ones build in 06.2020. I needed it quick so I went for a car that was on it's way to the dealer. So no TDI evo but atleast I have proper buttons

From what I read so far the O4 has great fuel consumption. Wondering if they'll bother doing a greenline model, for the O3 it was only available pre facelift.
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Old 08-23-2020, 04:29 PM   #16 (permalink)
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Doesn't everybody use tirerack.com for tire weights?
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Old 08-24-2020, 11:45 AM   #17 (permalink)
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Quote:
Originally Posted by California98Civic View Post
Doesn't everybody use tirerack.com for tire weights?
Before I was on ecomodder I never heard of it. But there are a lot of tires on it that are not delivered across the ocean, and a lot of tires that are available here are not on tirerack.
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Old 08-26-2020, 10:59 PM   #18 (permalink)
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Quote:
Originally Posted by GreenTDI View Post
... there are a lot of tires on it that are not delivered across the ocean, and a lot of tires that are available here are not on tirerack.
I believe that. ...silly North Americans... often assuming we are the world.
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Old 08-27-2020, 04:53 AM   #19 (permalink)
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Quote:
Originally Posted by Leinaad View Post
Wondering if they'll bother doing a greenline model, for the O3 it was only available pre facelift.
Probably the mild-hybrid version of the 1.0 TSI? It will appear later this year, called 1.0 TSI e-TEC...


Quote:
Originally Posted by California98Civic View Post
I believe that. ...silly North Americans... often assuming we are the world.
It's the new world, no doubt about that
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Old 08-27-2020, 06:25 AM   #20 (permalink)
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I haven't read anything so far that the mild hybrid versions will get a special greenline treatment.
For the Leon 4 1.0eTsi and 1.5eTsi are already available, but aero wise they are the same as the non hybrid versions.

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