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2010+ Buick Lacrosse Body, Chassis and Exterior



  • e_net_ridere_net_rider Posts: 1,380
    I have not yet driven on wet road.
    Suspension design will impact such, just as quality brakes aid, but the number one item is tires. If the tires are not up to the job, then brakes don't matter, nor suspension design.
    Typically, for much of the year we have rain, that is a high annual rainfall. And locally especially it is common for water to accumulate in puddles from the shoulders on to the road. Hydroplaning is a common risk. Therefore, for me tires must excell in wet performance. And because I have family in show country, they must also be rated well for such conditions.
    I'm deeply disappointed with the user rating of this tire compared to others in the same grouping.
    So far, no tire dealer wants these tires with less than 500 miles. New tires are about $1500.
    At one tire shop, they did not want them either and also felt much better tires were available. He pointed out one thing I was not aware of, the softness of the tire tread. It was quite warm, and definitely soft. He stated, that if I kept them, make sure they are frequently rotated because they are prone to cup. The owners manual shows 7500 miles for rotation. It is not tire or size specific. That distance would be near the top end of recommended rotations. I've seen recommendations from 3500 on up. If cupping is a big issue, as it has been with other GY tires put on GM vehicles, it then seems 5000 miles should be the limit, at least for the first and second rotations.
    The softer rubber is usually indicative of great dry traction.
    Beware that by time half the tread is worn away, any tire, the performance of it can change very significantly. Especially for roads where the condition is other than dry.
  • bwiabwia Boston Posts: 1,055
    net rider,
    I have no problems with the Eagle RS-A on my CXS. The slightly louder road noise is due primarily to the 19" tire size with the touring package and not an inherent demerit with the tire itself. This weekend I drove my brother's 2008 BMW 528i AWD with the RSA 17" tires and it was very quiet on all road surfaces. Handling was competent and superb but not much different from what described by bobinor in his CXS. So I would have to conclude the RSA tire quality is not a problem. Perhaps you should try different tire pressure settings to see if you get a different result. My cold psi setting is 34 and that work's for me.
    By the way, I am not jealous but I cannot understand why a person would spend so much on a BMW. The 528’s interior is quite ordinary. Hard plastics everywhere and the interior feels cramped. Compared to the CXS the BMW 5 series is not a true luxury car and as such does not justify its lofty price tag. But if you're looking for snob appeal and cachet among the beautiful people then BMW does command attention.
  • djaadjaa Posts: 8
    My salesman had me roll down the drivers window some, and feel the edge of the window glass. You can feel a grove in it. He said something about it having a lamination in it for sound purposes. Take it for what its worth!!! :) I think in the older years 50's? the "safety glass" had a lamination between the glass to hold it together when broken. For years now the safety glass has a tensill strength that causes the glass to crumble so there isn't large shards of glass to cut or stab. Thats how it has always been explained to me.?
  • djaadjaa Posts: 8
    Being a mechanic, I have always heard and noticed there is a "break in" period for cars to get better gas mileage. I am hoping for the same with my LeCrosse. I haven't even followed it yet knowing this is the case.
  • e_net_ridere_net_rider Posts: 1,380
    Perhaps you should look at the tirerack rating of this tire. Even the Eagle GT scores much better than this tire. These are owner reviews of all sizes a particular tire is available in weighted toward the actual owned sizes.
    That would seem to blow your theory that it is the size that causes the noise, especially since the tire store told me our size is uncommon.
    Maybe the BMW is just a quieter ride?
    On my recent trip, I watched the tail lights of a BMW, maybe 725 - numbers were hard to read, as it appeared to travel very smoothly. I was rolling side to side with a slight sway. And I believe I was running sport mode.
    As to the use rating, I admit that the same tire can act very differently on a different vehicle/suspension, But think that it would have little impact as to the difference between dry road and wet or snowy. That is if this tire moved to a 8 on dry for this vehicle it would still be poor on wet, snowy, & for ride/comfort.
    I read some reviews and one claims this tire is to be discontinued.
  • e_net_ridere_net_rider Posts: 1,380
    Interesting points for thought.
    The windshields have been laminated for many years so that if something hits it the whole thing does not turn into pieces flying at you (not shards). And as I recall they were labeled 'safety glass'.
    Starting to get confusing.
    The rear windows are not supposed to be acoustic if I remember correctly. Maybe a difference at the edge can be felt between front and rear.
  • e_net_ridere_net_rider Posts: 1,380
    My wife told me it settled into better when she got 5000 miles on her's.
    I watching just to see if it improves and do hope so. If I'm lucky enough to gain 1MPG on highway, then I should see nearly the same increase for local driving which as a percentage of MPG would be quite significant. The first tank, mostly local was 20.5 which would indicate straight city of 17 or less. A town car will get 16 under such conditions.
  • e_net_ridere_net_rider Posts: 1,380
    edited November 2010
    Earlier I expressed a desire for these to be on vehicle and still find them desirable. I did however find a little trick that helps some for lighting area close to the vehicle, closer than low beams. Turn on fog lamps. You should check local regs because some areas may prohibit such use.
    I will be keeping my eyes open for a pair of tiny mirrors that might be mounted to reflect part of the fog light beam or maybe a cornering lamp kit.
    I would consider making the fog lamps come on with directional but have no idea how to do it at this point.
  • e_net_ridere_net_rider Posts: 1,380
    Has anyone changed over to synthetic oil?
    Did it affect MPG?
    I'm considering the change when vehicle is broken in just to gain the durability and inherant protection of synthetics.
  • e_net_ridere_net_rider Posts: 1,380
    My heart sank when I found this. Light caught it just right and I noticed a body line I had not seen before. Not a body line, but deep scratch/crease in driver rear quarter panel. Absolutely no damage to paint. It is close to 10" long. It appears this has to have been present before factory paint. I believe that at the body assembly line someone mishandled the quarter panel and dragged it across something gouging and dimpling it. There is just no way that the paint would not have been damaged if done after painting.
    I went to dealer that day, sales. They were extremely busy that day and shuffled me off to service. The manager insisted it had to be done after I got car. *!x&x? He said he'd have to talk to top sales manager. I swung by there Tuesday and he was out, so I talked to managers. First I invited them to find it. Neither could without me pointing it out. They agreed to fix, but now my new car will have non-factory paint. GM, WAKE UP!
  • e_net_ridere_net_rider Posts: 1,380
    Weather has been quite changeable, sometimes quite cool overnight and during day. This leads to the monitor showing the cold pressure as 33, 2 # low. It apparently makes a big difference in the sidewall flex and does away with a lot of the harshness and also allows tire to absorb some of the lateral force from the road rather than passing it all to passengers.
    Allowing the tread to track in such a way seems that it would also be less likely to force the tread to break grip with the surface, thus safer.
  • I think I'm going to have my dealer take a look at the way the left side (looking forward) of the trunk lid doesn't quite meet with the quarter panel top at the same place as on the right. There's an obvious extra gap and the surfaces don't meet. Also, closing the trunk with one downward push seems to be a hit or miss situation. It's not at all "solid" like closing one of the doors.More than often it takes 2 tries to close it. Maybe my "gap" is letting air prevent a good connection.
  • e_net_ridere_net_rider Posts: 1,380
    Sometimes adjustment can help and I hope that is the issue.
    Here is hoping that the body panel placement and welding robot did not have a hangover that day. Or much the same for manufacturing the trunk lid.
    But whatever fixes the alignment issue, you can truly say your car was custom built ;-)
    As to the closing issue, I think that might be common. I too have often missed the amount of swing needed for it to lock.
    In case you missed it, there is a small plastic handle on the inside, right of tag area, for pulling lid shut. I'm guessing they put it there so you can avoid paw prints on your shiny vehicle. Definitely not self closing.
  • djaadjaa Posts: 8
    The vibration in my LeCrosse is finally gone! After about making a scene, they had an engineer come drive it and used an instrument that detects vibrations. It didnt even register a problem although he felt it. He did say, that if you had more than one marginal tire and the high spots were opposite each other in rotation they might cancel each other out. Then when they rotated insink with each other you would get a vibration. That would be why my vibration would come and go. So they chucked my tires up and did indeed find two tires marginal. They tried taking tires from existing LeCrosses from the lot and finally came up with one. The other they got from a tire store, had to go through 2 before they found a good one. My LeCrosse rides as smooth as glass, just as it should!!! I love Mich. tires but I guess they are not all created equal! They said the tires cant be the cause, because they normally install Mich. tires to correct these type of issues! Ive been preaching the tire theory for 2 months now as a thought and a place to start. It finally paid off. I have 4 good tires with low single digit roadforce numbers! I think the comments I made on my "new car questioniar" helped light the fire! I am glad that they finally dug in and stayed the course to find and repair the source of my vibration. I am NOW a happy customer of Andy Mohr Buick GMC in central Indiana!
  • Hmmm, my impression of the reason for the plastic handle in the trunk was if you are kidnapped and shoved into the trunk by your abductors, it provided a means for your escape. Maybe I watch too much TV.

    I think the better means for closing the trunk is to use the bulge in the sheet metal at the bottom of the lid rather than the extended Buick emblem. I think if you keep using the Buick emblem it's eventually going to loosen and become a problem. YMMV
  • e_net_ridere_net_rider Posts: 1,380
    Wrong handle, not the yellow escape tag. Maybe it is there so you can lock yourself in by pulling it shut with this handle.
  • Yes, I missed that black molded hand hold right of center, even as many times I was in and out of the trunk on our trip! Thanks for pointing me to it. I tried it tonight - it's absolutely useless, unless its purpose it to just lower the lid from its extreme open position to a mid point. But to shut the lid using this thing? Nope.
  • e_net_ridere_net_rider Posts: 1,380
    It does have the use you mentioned. To get it to latch you have to give it a snap of the wrist. You can tell it does not have the solid sound of doors closing and intuitively you would think gravity would help a lot. But anti-gravity lifts and light weight of it fight back. Only once did I do it with so much force that it sounded a bit much.
  • e_net_ridere_net_rider Posts: 1,380
    Has anyone had a vehicle Ziebart'ed or considered doing it to this vehicle?
    I'm intrigued by sound deadening they have available.

    I went for a quiet drive last night, little traffic. Even though the air was cool by then, it should not have hardened tires, but I could hear that "whoomp, whoomp" as things rotated. Not loud but definitely there. After about three miles where I could get past 30MPH it seemed to fade. At 45-50 MPH tire noises were still present from contact with surface. Definitely not the quietest I've ridden on, but not terrible, yet noisy enough to interfere with quiet listening of music.

    The tires seem much quieter than when they were new. This is the first I new that tires needed a break-in, 600 miles. It is a bit hard to judge because we are entering a season of quite cooler road surfaces which greatly effect noise.
    I noticed significant quieting at about 1200 miles.
  • Had to look that one up - never had heard of Ziebart 'til now. Don't think I'd consider it.

    As far as road noise, you have to consider the road surface first, I think. A nice smooth asphalt is considerably more quiet than an aggregated concrete. On our trip I was impressed by the CXS's quiet ride on asphalt but then all our cars were fairly quiet on it. I think tires became more noisy when M+S ratings became standard.

    One other factor that might contribute to cabin noise I considered is the mesh screen that covers the extra-long sunroof opening. Perhaps a more solid cover matching the interior roofing material would better dampen exterior noise
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