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-   -   I stand Corrected....Run Flats Sux Donkey BA*& (https://xoutpost.com/bmw-sav-forums/x5-e70-forum/78159-i-stand-corrected-run-flats-sux-donkey-ba.html)

ard 12-31-2010 02:01 AM
Quote:
Originally Posted by Tim W. (Post 791824)
Richard

I agree with you. My point was that we should be able to count on some semblance of reliability in minor conditions. Heck, there was less than 3in.

They just seem to be a very poor choice to have on anything where the weather turns even slightly down.

I will be driving the Audi tomorrow.
I'm sorry but you do not seem to understand tires.

The actual physical properties of the rubber used in summer compound will NOT work in cold temperatures- forget about how deep the snow is.

Then add some snow, even only 3 inches, and the tread isn't designed for that. (Even if it is "plenty")

But you insist this is a "Run Flat" problem...or a "BMW problem". Sure is a popular sentiment, and surely there will be many that pile onto this conclusion...

Silly. It is an owner/driver problem.

JCL 12-31-2010 02:09 AM
Quote:
Originally Posted by ard (Post 791840)
I'm sorry but you do not seem to understand tires.

The actual physical properties of the rubber used in summer compound will NOT work in cold temperatures- forget about how deep the snow is.

Then add some snow, even only 3 inches, and the tread isn't designed for that. (Even if it is "plenty")

But you insist this is a "Run Flat" problem...or a "BMW problem". Sure is a popular sentiment, and surely there will be many that pile onto this conclusion...

Silly. It is an owner/driver problem.
Exactly.

Richard in NC 12-31-2010 09:59 AM
Quote:
Originally Posted by ard (Post 791840)
I'm sorry but you do not seem to understand tires.

The actual physical properties of the rubber used in summer compound will NOT work in cold temperatures- forget about how deep the snow is.

Then add some snow, even only 3 inches, and the tread isn't designed for that. (Even if it is "plenty")

But you insist this is a "Run Flat" problem...or a "BMW problem". Sure is a popular sentiment, and surely there will be many that pile onto this conclusion...

Silly. It is an owner/driver problem.
My first experience of that was with a '99 540i sport with Michelin Pilot Sport tires. My driveway has a 1 degree slope and with 1/2" of snow on it, I could not get up it into the garage. Turning DSC off and getting a running start allowed me to spin my way thru. But forget real traction with tires like that.

atlanta2011x5d 12-31-2010 10:37 AM
Quote:
Originally Posted by JCL (Post 791843)
Exactly.
I'll take that one too.

All you have to do is look at the crazy width of them (20's, that is) to see that, in any snowfall, either change them out or leave it parked. Nevermind the compound and tread pattern issues, which of course factor in to their capabilites as well. All of which have zero to do with RFT, although not a fan of them myself either. For entirely different reasons though.

Cheers

BGM 12-31-2010 10:55 AM
I believe on the X5M BMW has moved to the Bridgestone Dueler RFTs as standard equipment. Not sure if those are a true "all-season" but the tread is supposed to be designed to handle wet roads better.

midwest x6 12-31-2010 11:18 AM
Quote:
Originally Posted by Tim W. (Post 791779)
I have owned 5 X5's and this is the first E70.

Either BMW has taken a big step back and can't build and SAV for Sh*#@ or the Sport Maxx tires REALLY blow. Not just kinda....but REALLY blow.

My E53's have had 19's or 20's on them. But the tires were either Toyo's or Pierilli Scorpions. Never had an issue.

Today, not once but TWICE I was sitting at a light in the snow storm and started to slide off the road....sideways. And there is decent amount of tread left too. They are not bald. Couldn't stop or accelerate worth anything. It is sad when a RWD Ford panel van out accelerates you.

BMW should be ashamed they ever put such crap on a BMW.

Now to place an order for Toyo's.

Ok.....off my soap Box
Is the Sport Maxx an All Season, Winter or Sport tire? If it's # one or two I understand your dismay...All Season with XDrive should be fine, Winter with XDrive should be a tank..

I have Winter rubber on my X6 and it's awesome. My wife has all seasons on her RX and that's pretty good too.

Sport/Summer tires with XDrive in a Colorado Winter? Well, I'll just say I'm not surprised if it provided zero traction...:dunno:

Tim W. 12-31-2010 11:35 AM
The net result is that if your driving and the temperature drops below 37 park your X and walk home. You have 4 rocks for tires.

BGM 12-31-2010 11:35 AM
Quote:
Originally Posted by midwest x6 (Post 791880)
Is the Sport Maxx an All Season, Winter or Sport tire? If it's # one or two I understand your dismay...All Season with XDrive should be fine, Winter with XDrive should be a tank..

I have Winter rubber on my X6 and it's awesome. My wife has all seasons on her RX and that's pretty good too.

Sport/Summer tires with XDrive in a Colorado Winter? Well, I'll just say I'm not surprised if it provided zero traction...:dunno:
Sport Maxx = Summer/Sport tire

mizboo102 12-31-2010 11:41 AM
Quote:
Originally Posted by ard (Post 791840)
I'm sorry but you do not seem to understand tires.

The actual physical properties of the rubber used in summer compound will NOT work in cold temperatures- forget about how deep the snow is.

Then add some snow, even only 3 inches, and the tread isn't designed for that. (Even if it is "plenty")

But you insist this is a "Run Flat" problem...or a "BMW problem". Sure is a popular sentiment, and surely there will be many that pile onto this conclusion...

Silly. It is an owner/driver problem.
QFT

I know others have but OP should read this

midwest x6 12-31-2010 11:43 AM
Quote:
Originally Posted by Tim W. (Post 791883)
The net result is that if your driving and the temperature drops below 37 park your X and walk home. You have 4 rocks for tires.
Yes -- with Sport/Summer Tires that is the case...Add any amount of snow to that cold and it will get exponentially worse...

I've been driving in MN winters for over 20 years...No way I'd put anything less than All Season Rubber on my cars Oct-Mar with XDrive..

For my RWD's it was always winter tires.

Good luck, stay safe and happy new year too!!


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