08-18-2017, 02:49 AM | #1 |
Private First Class
30
Rep 109
Posts |
Picked up the X5 35d for 5 month or so now and recently just did a 1000km round trip with the car. The first thing that stood out must definitely be the fuel consumption. I averaged about 8.5L/km with 4 adults, luggage and mountain passes, I bet I could have achieved even better results on flat grounds. My car has the standard suspension with the 20inch option on Prielli. I thought the ride to be pretty good and we all thought the whole time in the car to be pretty comfortable. But the one major area that surprised me was how unstable and twitchy the car was at speed over 120km/hr. The steering felt extremely sensitive with minor movements resulting in the car twitchy and the car was having a hard time going in a straight line. Granted it would only happen at speed over 120km/hr, I thought my previous experience in a cayenne to be more planted and stable. Not sure if it's got anything to do with the 315 in the rear or with the electric steering.
__________________
2014 F10 M5 CP | Black Sapphire Metallic | Sakhire Orange Interior | 343M Wheels | Afe CF Air Scoop | Charcoal Filter Delete | AutoTecknic CF Steering Wheel Trim
|
08-18-2017, 07:19 AM | #2 |
Enlisted Member
11
Rep 40
Posts |
from these two I'd suspect the tires more than the steering: having the standard styling 450 19" (255/50), the steering isn't over sensitive, nor does the car get twitchy, even at +200 km/h.
Did numerous trips to Germany and in many cases the rear passengers didn't even notice the high speed... It's just smooth sailing. |
Appreciate
0
|
08-18-2017, 07:25 AM | #3 |
Lieutenant General
7385
Rep 11,829
Posts
Drives: MY24 G01 AW Msport
Join Date: Feb 2008
Location: L.I. NY
|
probably need wheel alignment, check tread on tires.
|
Appreciate
0
|
08-18-2017, 10:51 AM | #4 | |
Lieutenant
144
Rep 525
Posts |
Quote:
Did my trip from YYZ to MIA and back on 35d , fully loaded with kids stuff and didnt expirience any problem with stability on high speed , Niagara Falls board to Ft Lauderdale in 20 hours , sometimes i'am speeding very hard . |
|
Appreciate
0
|
08-18-2017, 11:07 AM | #6 |
Private First Class
30
Rep 109
Posts |
I've got about 7000km on the car, thread wouldn't be a factor. But would definitely get an alignment done
__________________
2014 F10 M5 CP | Black Sapphire Metallic | Sakhire Orange Interior | 343M Wheels | Afe CF Air Scoop | Charcoal Filter Delete | AutoTecknic CF Steering Wheel Trim
|
Appreciate
0
|
08-18-2017, 11:09 AM | #7 |
Lieutenant General
7385
Rep 11,829
Posts
Drives: MY24 G01 AW Msport
Join Date: Feb 2008
Location: L.I. NY
|
|
Appreciate
0
|
08-21-2017, 01:12 AM | #8 |
Well versed in the care and feeding of BMWs
261
Rep 733
Posts |
I would be looking at inflation pressures. My 19" PIRELLIs have over 37 k miles and are rock solid at all speeds. My 35d has averaged 24.8 mpg since the first tank. Travelling it's not unusual to see 825 miles to empty. Yes, alignment IS critical.
__________________
B&O, parking assistant, executive package, 3rd row seats and the manual rear shades are the ONLY items we didn't order. Having everything else makes our F15d a NICE ride.
|
Appreciate
0
|
08-21-2017, 01:26 AM | #9 | |
Colonel
2113
Rep 2,388
Posts |
Quote:
|
|
Appreciate
0
|
08-21-2017, 11:56 PM | #10 |
Private First Class
30
Rep 109
Posts |
Thanks for all the inputs. Will definitely do an alignment on the car to see if that fixes the issue.
__________________
2014 F10 M5 CP | Black Sapphire Metallic | Sakhire Orange Interior | 343M Wheels | Afe CF Air Scoop | Charcoal Filter Delete | AutoTecknic CF Steering Wheel Trim
|
Appreciate
0
|
08-23-2017, 11:08 PM | #11 |
Mmmmm…
1148
Rep 2,426
Posts
Drives: F15
Join Date: Oct 2011
Location: New York
|
Shouldn't be twitchy.
__________________
2015 BMW X5 xDrive50i
BMW CCA 509766 |
Appreciate
0
|
08-24-2017, 01:00 PM | #12 |
Private First Class
54
Rep 155
Posts |
If there is not enough toe-in on the front wheels, the steering can get a little unstable. I try to have BMW set mine as close to .00" as possible typically ending up about .02". It's a little twitchy at that setting, but front tire wear is much better. A setting of .04" - .06" is significantly less twitchy, but the outside edges of the tires wear faster.
|
Appreciate
0
|
08-27-2017, 04:10 PM | #13 |
Retired Curmudgeon
2982
Rep 4,046
Posts |
If I had to guess it'd be too much toe out on the rear or the front.
__________________
'19 X3 M40 Carbon Black/Oyster, '23 Jeep Grand Cherokee L Summit, Past BMWs: '18 M550i, '18 330 GT, '16 X5 40e, '11 E90M3, '06 X5 4.4, '03 330i ZHP, '02 M3, '97 Z3 2.8, '95 M3 (2x), '94 530i (manual), '92 525i (manual), '88 M3, '87 325iS |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|