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Old 07-10-2008, 09:09 AM   #41
ice330ci05
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How much weight is saved when changing the windows to plastic? Is it advisable?
+1

or other lightweight material.... if anything just for the rear window...
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Old 07-10-2008, 12:57 PM   #42
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I've seen a couple of 911's where people went to plastic windows for a street car. The downfall was that they were always leaking water. As opposed to aircraft, a BMW was not designed to accept a plastic window. They were designed to accept a glued in glass window.

For a racecar, you can put up with a bit of a leak here and there. As for a daily driver, it's not a good idea to have a leaking window (unless you like a moldy stinky car). In a street car, the water runs under the carpet and the science experiment starts.

With plastic windows, be prepared to clean them properly. If you don't use a thick enough material, they will be flexing all of the time and finally crack around the edges which will result in a leak.

If you are willing to put in all of this labor, then plastic is the way to go.
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Old 07-28-2008, 02:51 PM   #43
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There are a few other ways to increase your fuel mileage:
-Install four space savers and pump them up to 80psi.
-Tape up all of your seams on the front of the car
-Lower the car
-Make a homemade front spoiler (out of lawn edging) so it keeps all of the air from under the car
-Taks a ball peen hammer and make a bunch of dimples on all of the body surfaces
-Go on the South Beach diet and lose some weight
-Drive nude (shoes and clothes do weigh a bit)
-Install a sail in top of the car (harness the power of the wind when applicable)
Careful with the advice... some people will follow anything these days. Even when the advice involves taking a ball peen hammer to the car body.

Been about a month now since my last reset. I'm averaging 23.2 mpg.
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Old 07-29-2008, 01:31 PM   #44
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Careful with the advice... some people will follow anything these days. Even when the advice involves taking a ball peen hammer to the car body.

Been about a month now since my last reset. I'm averaging 23.2 mpg.
I guess you all shouldn't take my advice on getting a TDI VW. I took a trip last week and it gave me 52mpg at 55-60mph. On the way back I ran 70-75 and it dropped to 50mpg.
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Old 07-29-2008, 04:09 PM   #45
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I guess you all shouldn't take my advice on getting a TDI VW. I took a trip last week and it gave me 52mpg at 55-60mph. On the way back I ran 70-75 and it dropped to 50mpg.
+1

I'm considering getting one of the new BMW diesels for my next car. I think an X5d with a 6-speed might be good for the job



In Alpine White, of course
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Old 07-29-2008, 04:46 PM   #46
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I guess you all shouldn't take my advice on getting a TDI VW. I took a trip last week and it gave me 52mpg at 55-60mph. On the way back I ran 70-75 and it dropped to 50mpg.
The biggest change I've made so far is in speed. Prior to the last reset I would routinely get 20-21 mpg.

Btw, I run half a tank of fuel and took out my spare a while ago. I fill up somewhat more often, but haven't found it to be an inconvenience. Having less fuel to begin with kind of discourages mashing on the pedal.
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Old 07-30-2008, 04:03 PM   #47
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On the other hand. This past weekend, we took the Eurovan to Hershey and camped for two days. Might not sound too thrilling but we had 5 kids in it (ranging from 2 to 13 years old) and 2 adults (my wife and I). Over the whole trip we only got 18mpg. So, for 7 bodies and the whole vehicle packed to the gills with camping gear, 18 don't sound that bad.
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Old 07-31-2008, 04:27 PM   #48
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Damn, that's quite a load. 18 mpg is respectable considering a Yukon carrying one person probably gets something like that.

I'm settling in at 23 mpg now. My average speed is at 28 mph.
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