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  #1  
Old 02-25-2013, 10:56 PM
mr_clueless's Avatar
mr_clueless mr_clueless is offline
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Location: California
 
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Mein Auto: 2014 328i
What's up with BMW's braking performance?

First we saw:
http://www.caranddriver.com/comparis...mw-328i-page-6

Low-rolling-resistance rubber is designed to keep rolling, which is why the 328i stopped from 70 mph in a full-size-SUV-like 191 feet. Stops were at least consistent and free of any fade. The pedal remained firm, responsive, and progressive. Subjectively, the brakes are great, but they’re severely let down by the tires.

OK, maybe it was LRR, so one could technically forego mpg and get the braking performance, except...

Now we see:
http://www.caranddriver.com/comparis...rive28i-page-4

The BMW’s only real dynamic failing is in the braking department. It took 180 feet to stop from 70 mph, 11 feet longer than the Q5 and 15 longer than the Evoque. It’s another example of BMW’s recent poor braking performances. The pedal feels fine. In fact, it won the brake-feel category, and its discs are bigger, front and rear, than either of the others’. But the vehicle simply doesn’t deliver stops as short as its competitors do. We have to believe that the poor numbers are due to the Goodyear Eagle LS2 mud-and-snow-rated, run-flat tires.

The tires again? Also no mention of LRR.

At least the SUV did better than the sedan!
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2014 328i / Liquid Blue / Beige Leatherette / 4 DR / 6 MT / Moonroof / Rear Camera + PDC / Xenons / DHP / 12K+ Miles / Bought 10-16-2013
2003 325i / Gray Green / Beige Leatherette / 4 DR / 5 MT / Moonroof / 219K+ Miles / Bought 12-21-2002 / Sold 10-21-2013
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  #2  
Old 02-25-2013, 11:14 PM
07 E63650i's Avatar
07 E63650i 07 E63650i is offline
Living in Fast Forward
Location: Southern California, USA
 
Join Date: Jan 2013
Posts: 3,062
Mein Auto: 2007 BMW E63 650i
Quote:
Originally Posted by mr_clueless View Post
First we saw:
http://www.caranddriver.com/comparis...mw-328i-page-6

Low-rolling-resistance rubber is designed to keep rolling, which is why the 328i stopped from 70 mph in a full-size-SUV-like 191 feet. Stops were at least consistent and free of any fade. The pedal remained firm, responsive, and progressive. Subjectively, the brakes are great, but they’re severely let down by the tires.

OK, maybe it was LRR, so one could technically forego mpg and get the braking performance, except...

Now we see:
http://www.caranddriver.com/comparis...rive28i-page-4

The BMW’s only real dynamic failing is in the braking department. It took 180 feet to stop from 70 mph, 11 feet longer than the Q5 and 15 longer than the Evoque. It’s another example of BMW’s recent poor braking performances. The pedal feels fine. In fact, it won the brake-feel category, and its discs are bigger, front and rear, than either of the others’. But the vehicle simply doesn’t deliver stops as short as its competitors do. We have to believe that the poor numbers are due to the Goodyear Eagle LS2 mud-and-snow-rated, run-flat tires.

The tires again? Also no mention of LRR.

At least the SUV did better than the sedan!
Speaking of run-flats, I have them on my 650i and it feels to me like they are low rolling resistant in an aspect.
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