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    • A Case For an X3 M - BimmerBoost Renders the F25 X3 M

      The debate about M SUV's is over, they are here and they are here to stay. The idea is really not one that is all that bad. What upsets M enthusiasts is that BMW went back on their word. Regardless, the cars themselves are marvelous but the best in the M SUV segment is yet to come. Why is that? Well, rumors are floating about regarding BMW developing an M version of the new F25 X3.

      Chassis

      We would argue the X3 is more deserving of M status than the X5 or X6. Why is that? Well, the curb weight for one. The F25 X3 in N55 X35i trim weighs only 3971 pounds. This is a whopping 1,397 pounds less than the X5 M and 1,353 pounds less than the X6 M. An M model of the X3 would weigh a bit more than standard (larger tires/wheels, brakes) so let's just say an X3 M would be at least 1,200 pounds lighter than the X5 or X6 M cars if it were to use a 6 cylinder turbo.

      1,200 pounds is no joke, that is a serious difference in heft. Not only would an X3 M stop and handle better, it would get better mileage and require far less power to achieve the same performance numbers as its big brothers. Here is a power to weight example, the X5 M needs 555 horsepower to achieve 9.67 pounds per hp. For an X3 M to achieve this same power to weight ratio, it would need only 429 horsepower at a curb weight of 4,150 pounds.

      Drivetrain and Motor

      What motor would an F25 X3 M have? Well, the N55 turbo 6 makes the most sense. Why? Because this motor is already used in the X3 first of all. Secondly, BMW is going to use an N55 variant for the next generation M3. In much the same way the X5 and X6 M serve as a preview to the next generation F10 M5's motor using the same base motor, the X3 M would no doubt do the same for the next generation M3. Quite logical, isn't it?

      The transmission would be an automatic. Why? Well, a dual clutch setup in an SUV does not make too much sense as it still needs to function as an SUV. An auto makes much more sense for those that want to tow and actually get some utility out of the vehicle. A manual should not be ruled out but probably has a slim chance as well. If it happens, count on a 6 speed automatic that is shared with the X5 and X6 M. Keep in mind, Porsche also ditches the PDK for the Cayenne for utility reasons. AWD will obviously be standard.

      What will the performance numbers be?

      The current N55 based X3 is BMW estimated to do 0-60 in 5.5 seconds. It should do the 1/4 mile in the low 14's and be quite close to an E36 M3 in acceleration. We do not see an M version having a superior power to weight ratio to the X5 or X6 M. 400-430hp is a reasonable guess on paper and should propel X3 M into the high 12's in the 1/4 at just under 110 mph. 0-60 would be in the mid 4's. The X5 and X6 M would still have a top end advantage due to the raw horsepower difference and the hierarchy would be maintained. The difference would be similar to that of the E92 M3 vs. E60 M5, 2 to 3 mph in trap speed stock for stock.

      The handling and braking will no doubt be in the X3 M's favor. Car and Driver pulled .89 g in the X5 M. The X3 M would be able to improve on this a bit. The thought of an SUV pulling over .90 easily is just incredible in of itself. With so much less heft braking would improve on the X5 M's 162 feet from 70 mph.

      Does it makes sense?

      We think it makes more sense than an X5 or X6 M. If M SUV's are here, BMW might as well do them right. With an X3 M, BMW has the potential to have the most exciting performance SUV in the marketplace. It would be the lightest, the best handling, most efficient, simply the best performance SUV driving experience available. If they had the balls to put the V8 twin turbo in it they would stomp everything out there for years to come.

      Think of it this way, does it make sense for BMW to have an M3? Of course, no one could imagine the M lineup without it due to the driving experience. The E92 M3 weighs only about 400 pounds less than the E60 M5. Imagine if this difference was over 1200 pounds.

      Hell, an M version of the 1 series is on its way and it potentially will be the lightest and most fun M car for sale today. The M brand has already been diluted, might as well dilute it the right way with cars that are lighter and more fun to drive. We say bring on the X3 M, and after that, might as well do an X4 M too.


      Renderings:














      This article was originally published in forum thread: A Case For an X3 M - BimmerBoost Renders the F25 X3 started by Sticky View original post
      Comments 12 Comments
      1. CookieCrisp's Avatar
        CookieCrisp -
        BMW is bringing back the S54 for the next gen M3. However, it will use forced induction
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by CookieCrisp Click here to enlarge
        BMW is bringing back the S54 for the next gen M3. However, it will use forced induction
        That would be the coolest thing ever.
      1. Sticky's Avatar
        Sticky -
        I really like it when I see international sites covering our articles: http://www.motorsport-passion.com/bm...5-bimmerboost/

        Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Interesting, some of you guys follow what Scott27 says closely:

        Click here to enlarge Originally Posted by SCOTT27 Click here to enlarge
        The BMW enthusiast site Bimmerboost is the first to deliver their ideas and thoughts regarding the X3 M.

        When I mentioned Previously about the X3M. It was one alongside an X3 35iS that was being evaluated by BMW. However I stress that No decision will be made on which model makes the green light until it has been identified that the new X3 has had a successful market integration.

        As for the rendering? It is good of the artist to identify two clear points to enhance the look of the new X3 being the front and rear wheel arches which use those design elements to widen the look of the body , which is probably what the designers will do. The X5M intakes look familiar but they could be reinterpreting them from the actual X3 intakes. The rear might be a touch busy but would probably benefit from additional intakes at the rear of the wheel arch and a larger central scoop. Bigger quad exhausts would probably enhance the look too.

        Acknowledgement to BimmerBoost.
      1. Sticky's Avatar
        Sticky -
        Lot's of people starting to talk about this: http://www.xoutpost.com/bmw-sav-foru...rendering.html
      1. Sticky's Avatar
        Sticky -
        A lot of the people covering this story are getting the engine choice part wrong. It would no doubt have much more power than the 1M coupe and not use the same motor but a preview of the next gen M3's motor:

        http://www.ausmotive.com/2010/08/31/...other-one.html

        http://www.ausmotive.com/2010/08/31/...other-one.html

        No big deal, I'm happy this is circulating the globe.
      1. Wild-Speed's Avatar
        Wild-Speed -
        I've seen it on many websites as well Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Wild-Speed Click here to enlarge
        I've seen it on many websites as well Click here to enlarge
        Congrats Click here to enlarge Well done, as usual.
      1. Locker's Avatar
        Locker -
        It's a excellent picture!
        Most wonderfull the wheels!!
        My next car is a X3 3.0d M style, but i would like this wheels.
        Where can i find this wheels? they are so wonderfull !!
        They make the X3 complete.
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Locker Click here to enlarge
        It's a excellent picture!
        Most wonderfull the wheels!!
        My next car is a X3 3.0d M style, but i would like this wheels.
        Where can i find this wheels? they are so wonderfull !!
        They make the X3 complete.
        closest thing you can get is X6 M's wheels.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Id throw a set of winter tires on this thing and have at it...
      1. THATDONFC's Avatar
        THATDONFC -
        Would be nice to drive around in the snow!