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BMW 3-Series AWD - Pros and Cons

74 messages,  Last post on Feb 04, 2008 at 4:16 PM

You are in the BMW 3-Series Forum. Your Hosts are pat & karens

What is this discussion about? BMW 3 Series, Sedan, Wagon


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#35 of 74
Re: real world experience with rear wheel drive [golfnut802] by circlew
Jan 16, 2008 (11:34 am)
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Replying to: golfnut802 (Jan 16, 2008 9:58 am)

You need to take a test drive each to experience the difference. My xi is fabulous in the snow, wet or dry. It is heavier and has 2 mpg less efficiency than the 330i. It is tenacious regarding traction.
 
If you do not care about the driving feel (which is lighter in RWD) and feel more confident with the AWD, go for it.
 
If the sport weighs in more to your liking , RWD should be your choice. Drive both.
 
Regards,
OW
#36 of 74
Re: real world experience with rear wheel drive [golfnut802] by roadburner
Jan 16, 2008 (12:13 pm)
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Replying to: golfnut802 (Jan 16, 2008 9:58 am)

I'm Shipo(big surprise). I keep the winter tire/wheel sets in one corner of my heated garage. It takes me all of 45 minutes to change all four wheels- and that includes cleaning the removed set before I store them. In my opinion, ninety minutes per year is a very small price to pay in order to enjoy the advantages of RWD.
#37 of 74
Re: real world experience with rear wheel drive [shipo] by laurasdada
Jan 16, 2008 (1:29 pm)
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Replying to: shipo (Jan 16, 2008 7:26 am)

Not to mention the added weight/complexity of AWD. A drag on performance and MPG...
 
I'm neither pro nor con AWD. Lifelong New Englander/skier, FWD and all-season tires have served me well. Well, 'till this year. For the first time ever, I decided I needed snows for my TL. Tire Rack: "Winter Performance" Dunlop WinterSport MS3 tires mounted/balanced on alloy wheels (alloys only $25 more expensive than a steel wheel/cover combo) shipped to my installer for < $800. $35 to mount the four of 'em and the shop put my Toyos in the Tire Rack storage sacks I also purchased and put two of 'em in the trunk, two in the back seat and now, until mid-April, they live in my garage. Of course, I haven't had a chance to drive in the snow yet...
#38 of 74
Re: real world experience with rear wheel drive [golfnut802] by shipo
Jan 16, 2008 (1:31 pm)
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Replying to: golfnut802 (Jan 16, 2008 8:26 am)

"While your 'best case' scenario has you saving a few hundred bucks (yahooo!!!)..."
 
Hmmm, a few hundred bucks? I paid $1,007 for the set, I sold the set for $400, and as a result I didn't have to pay for either a second set of factory tire replacements ($1,200) and I didn't have to pay for the AWD upgrade (typically about $1,900). Said another way, I did spend $604 so that I didn't have to spend $3,100. By my calculations, that means that I saved $2,504. Am I missing something?
 
Oh yeah, and I got a car that is, IMHO, safer to drive in the snow (i.e. better braking and handling) than an otherwise identical all-season shod AWD car.
 
"Also, I doubt a place is going to store 4 sets of tires for you over the course of a few years, and change the tires out twice a year, all for free, just to make profit on the initial tire sale."
 
Shop around; I think you'll be surprised. I had my dealer offer to do the swap and store thing for a very nominal fee (like $100 per year, IIRC) for tires that they didn't sell, and all three of the tire dealers in the next town over offer the full enchilada for "free" if you buy the set from them.
 
Best Regards,
Shipo
#39 of 74
Re: real world experience with rear wheel drive [akv25] by kdshapiro
Jan 16, 2008 (2:34 pm)
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Replying to: akv25 (Jan 16, 2008 9:05 am)

I'm not worried about stopping, I'm worried about starting. While it is true AWD detracts from the BMW driving experience I don't think I could ever go back to RWD. The security offered by a good AWD is far more than RWD with snows. I grew up with RWD and snows. In fact, I went through a few winters with my E46 and A/S. AWD is good for more than snow, it works great on sand, gravel, mud and slippery surfaces. While I'm sure one could mention some obsure condition where RWD rules over AWD, my daily driver these days has to have AWD.
#40 of 74
Re: real world experience with rear wheel drive [kdshapiro] by akv25
Jan 16, 2008 (5:19 pm)
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Replying to: kdshapiro (Jan 16, 2008 2:34 pm)

I do not contend that it is easier to get going on AWD. These are two articles that might be helpful to someone trying to make a decision.
 
http://www.caranddriver.com/columns/3467/snow-tires-still-beat-four-wheel-drive.- html
 
http://www.caranddriver.com/columns/8215/slowly-but-surely-horsepower-is-killing- -front-drive.html
#41 of 74
Re: real world experience with rear wheel drive [akv25] by circlew
Jan 17, 2008 (4:08 am)
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Replying to: akv25 (Jan 16, 2008 5:19 pm)

Great reading...so AWD with snows is the tenacious winner.
 
By the way, if snows are over-inflated (which might have been the case with the TT, no way to know), effectiveness goes to hell.
 
In the TT case, I would have pulled off to the side and use my trusty tire gauge to reduce the air to 28 PSI. Better traction for making it alive in those conditions. Just my opinion.
 
Regards,
OW
#42 of 74
Re: real world experience with rear wheel drive [circlew] by fedlawman
Jan 17, 2008 (7:42 am)
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Replying to: circlew (Jan 17, 2008 4:08 am)

For a further improvement in cornering traction, disconnect your anti-roll bars.
#43 of 74
Re: real world experience with rear wheel drive [circlew] by akv25
Jan 17, 2008 (8:18 am)
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Replying to: circlew (Jan 17, 2008 4:08 am)

The TT in question had summer tires (Bridgestone Potenza RE040 225/45YR-17), as Csere says that they did not replace them with snows since the last winter was mild.
#44 of 74
Re: real world experience with rear wheel drive [akv25] by Mr_Shiftright HOST
Jan 17, 2008 (9:14 am)
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Replying to: akv25 (Jan 16, 2008 5:19 pm)

The key sentence is this:
 
"The fact is that everything that makes a tire grip tenaciously when the pavement is dry and warm works against that tire in the snow."
 
So it really doesn't matter if you have 10 Wheel Drive. It's about the tires, bottom line.
 
I had an Old Toronado with oversize studded snows in Aspen Colorado some years ago---it was unstoppable. A good friend of mine works in Tahoe and he uses an Audi Quattro with 4 chunky snows. He does much better than the 4X4 SUVs unless they are chained.

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