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Best way to properly tie down an E46 M3 to a trailer?

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    Best way to properly tie down an E46 M3 to a trailer?

    Hey everyone! Sorry, this is a long post so I hope it's not a TLDR and that it would be helpful for others. Admittedly, I'm a tie down newb. However, picking up another E46 and we are opting to pick it up ourselves. I have been hearing every which way to tie a car down, all with pros and cons. It kind of gets my head spinning and I really just want to simplest, but safest way. Here are some details:
    • Car will be in an enclosed 20' trailer with wood base deck.
    • Trailer has 4 D-rings (2 in front, 2 in rear).
    • Distance traveled will be approximately 550 miles over non-interstate roads.
    Here are the most popular options options I've read about:

    1) Tie down via E-Track. Love this idea, and if I invest in a trailer down the road I would spec this stuff. However, this trailer we are using does not have it so this really isn't an option.
    PROS: Straps only touch the tires; Easy installation.
    CONS: Haven't really heard of any negatives other than possible alignment issues?

    2) Remove jack stand covers and insert T-hooks and criss cross straps at the front and back of the car. Tied down from the frame seems like it would offer the most peace of mind.
    PROS: Factory BMW's preferred tie-down option apparently and also mentioned in BMW bulletins? Have heard some say it was only meant for transport on the boat, which seems a bit odd.
    CONS: Have heard of the hooks coming out occasionally.

    3) Through wheel spokes. Manufacturer has memory foam strap with a fleece sleeve protector.
    PROS: Simple installation; Takes suspension issues out of the mix.
    CONS: Possibility of scratches or other damage to the wheel.

    4) Wheel/Tire Nets. Similar to the block/strap tiedowns used in E-Track systems.
    PROS: Easy installation, Takes suspensions out of the mix.
    CONS: Typically custom made for each car and tire size limiting use on other cars; Straps could potentially cause damage to wheels if not careful (rubbing against wheel).

    5) Tie down around control arms or trailing arms.
    PROS: Other transporters I've used have gone this route and hear this method a lot.
    CONS: Not sure if this could create any suspension issues?

    I am going to be going with Mac's ratchet tie-down straps. I spoke with the sales associate yesterday and he offered some great information. He felt E-Track is the best option and is seeing it a lot, however, he knows that's not an option on this trip. He felt the factory jack stand locations with T-Hooks is not bad, but indicated the physics involved with the suspension and the trailer bouncing does not act favorably on the car. And if one point of connection fails you could run into issues quickly. His favorite option BY FAR was #3 through the wheels. He said the majority of his exotic car transporters AND race car transporters are going this route because there is no impact on the suspension or alignment. He said he has never had a complaint about scratched wheels with their system. He also mentioned that if there is any failure point with option #3 the car still isn't going anywhere.

    Obviously there are so many different ways here but would like your thoughts on what you typically do. Again, my head is swimming with all this information so I'd love some more input from you all on other options I may have missed or if I have been misinformed.

    Thanks everyone!
    Last edited by Duck360198; 08-18-2021, 04:42 AM.
    1995 BMW M3 LTW - Alpine White / Anthracite Cloth​​
    2005 BMW M3 - Alpine White / Anthracite Impulse Cloth - ZCP - 6MT - Slicktop
    2006 BMW M3 - Alpine White / Black - ZCP - 6MT - Canadian Import
    2011 BMW M3 - Individual Fire Orange / Black - ZCP - 6MT - Slicktop

    #2
    AKG motorsport has towing eyes you bolt to your rear lower damper mount for 20$. Quick, easy, lightweight, no cons that i know of.

    Our BMW E30, E36, E46, Z3, Z4 rear tie down eye hooks install on the rear shocks to provide attachment points for secure tie downs. Made in USA.

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      #3
      +1 to using the wheels. Be careful use proper gear and take your time, you wont scratch anything or cause issues. Yes attaching to the suspension can cause damage. Attaching to the frame imo isn't a good idle considering how light and pretty weak our frames are to cracking

      Sent from my SM-G996U1 using Tapatalk

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        #4
        Originally posted by F1Dryvr View Post
        AKG motorsport has towing eyes you bolt to your rear lower damper mount for 20$. Quick, easy, lightweight, no cons that i know of.

        https://www.akgmotorsport.com/produc...n-rear-shocks/
        These work well, but don't cross the straps in an X pattern as it will likely bend the towing eyes. Go straight back from the towing eye to your trailer attachment point with the straps.

        Feff
        MVP Track Time

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          #5
          I’ve always cross strapped cars through the wheel spokes, never had an issue.

          2005 IR/IR M3 Coupe
          2012 LMB/Black 128i
          2008 Black/Black M5 Sedan

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            #6
            It’s an open trailer but I just go through the wheels and don’t cross them. Never had an issue. Just need to be careful you don’t run the strap over a valve stem.


            Sent from my iPhone using Tapatalk

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              #7
              Garagistic also does some tie downs like the AKG Motorsport ones linked earlier:
              REAR TIE DOWN ADAPTERS FOR YOUR E30-E46! If you tow your car to the track , you need a good way to hold down your E30, E36 or E46 BMW. The lower control arms under the 3 series are not ideal. You may have nice wheels on your car and in the case of an emergency, the tow guys might run a strap right on the lip of your


              I installed a set of these so they were an available tie-down option at the Dyno in case required... When I explained the power output range of my car the dyno operator laughed and used wheel chocks instead, saying I'd need to more than double my desired power output before tie down would be an issue haha, I have left them on ever since just in case as they seem more handy to have then to not.

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                #8
                I used to cross strap for years and while I've never had a strap come loose I don't do it anymore. If my trailer had e-trac or some tie down system in the deck I would use over the wheel straps but it doesn't so I strap through the wheels straight back or forward (depending on the corner of the car).

                This is a good example of why I don't cross strap anymore. https://www.youtube.com/watch?v=TIC7URvAqmM







                '09 HP2S, '12 R12GSA, '00 Black 323iT, '02 Alpine 325iT (Track Wagon), '02 Alpine 330iT
                Instagram @HillPerformanceBimmers
                Email to George@HillPerformance.com

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                  #9
                  I've always preferred to use axle straps through the wheels as they are easier to get through tight spokes like mesh wheels and do not cross straps.

                  Comment


                    #10
                    Originally posted by George Hill View Post
                    I used to cross strap for years and while I've never had a strap come loose I don't do it anymore. If my trailer had e-trac or some tie down system in the deck I would use over the wheel straps but it doesn't so I strap through the wheels straight back or forward (depending on the corner of the car).

                    This is a good example of why I don't cross strap anymore. https://www.youtube.com/watch?v=TIC7URvAqmM
                    Hmm. I'm sold. No more cross strapping for me.

                    2005 IR/IR M3 Coupe
                    2012 LMB/Black 128i
                    2008 Black/Black M5 Sedan

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                      #11
                      Originally posted by S14 View Post
                      I've always preferred to use axle straps through the wheels as they are easier to get through tight spokes like mesh wheels and do not cross straps.

                      https://www.macscustomtiedowns.com/c...32324062675018
                      The Mac's Straps are very nice. My wife got me a set for the M3 for Christmas they work like I'd never imagined. No more binding, hanging up, etc.

                      Feff
                      MVP Track Time

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                        #12
                        +1 Through the wheels straight back/forward. Only argument against it would be alignment might get out of whack while towing.

                        I’ve never had my alignment change though.

                        If you have a large splitter in front make sure there are front D rings as wide on the trailer as possible.

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                          #13
                          Originally posted by Obioban View Post

                          Hmm. I'm sold. No more cross strapping for me.
                          Also, I was helping a buddy tie down his car yesterday after a weekend at the track. I looped the axle straps through the tire and he hooked it up and tightened it down. I could watch the wheel toe out with ever tug/click he made. There has to be some kind of unhappy stress/load applied to the rear suspension when cross strapped.

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                            #14
                            Originally posted by George Hill View Post
                            This is a good example of why I don't cross strap anymore. https://www.youtube.com/watch?v=TIC7URvAqmM
                            He doesn't mention that the tension placed on the individual straps/ratchets will be much higher when cross strapped in the instance of something like a frontal collision or panic stop, making them more likely to fail. Also, cross strapping generally results in longer straps, which gives more opportunity for movement.

                            Sounds like the OP has it under control, but don't use crap ratchet straps (i.e. Harbor Freight, etc.).

                            When using wheel straps/nets, it would be smart to make sure the wheels and straps are as clean as possible as dirt is abrasive.
                            2003 Imola Red M3 w/ SMG

                            Comment


                              #15
                              Originally posted by George Hill View Post
                              This is a good example of why I don't cross strap anymore. https://www.youtube.com/watch?v=TIC7URvAqmM
                              I've never 'liked' a Jeep video before, but this is excellent. Thanks!

                              E46 M3 Coupe - 09/04 Production, 103k miles, Black/Black, 6MT swap, AS 0% kit, BBS RG-R + AS4’s, CSL flash, Karbonius airbox, Euro header + Section 1, Koni Yellow, Xtrons, SAP Delete, lockdowns complete

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