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  • #16
    Since it's an aftermarket wheel, what nuts were used and what was the thread engagement like?

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    • #17
      Check the wheel studs have not bottomed out in the nuts
      If the wheel thickness is less than std rims then the stud length is too long
      The nuts would torque up ok but not clamp the rim properly
      Worth a check
      How long have the rims been on the car
      Cheers
      Mike
      White 2010 gx diesel auto, bilstein shocks 50mm lift king springs, tjm steps, warn 9500, lt265-65-17 bfg atko on steel rims. Racor 230R10 filter
      Adelaide based

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      • #18
        Originally posted by reddevil25 View Post
        Check the wheel studs have not bottomed out in the nuts
        If the wheel thickness is less than std rims then the stud length is too long
        The nuts would torque up ok but not clamp the rim properly
        Worth a check
        How long have the rims been on the car
        Cheers
        Mike
        Spot on. All the studs have sheared off at the hub. Check carefully and if the nuts are bottoming out then change ALL the studs.
        My 150 build - http://www.pradopoint.com/showthread.php?27423-A-Random-approach-to-a-Bluestorm-150-GXL-D4D-automatic

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        • #19
          Originally posted by mjrandom View Post
          Spot on. All the studs have sheared off at the hub. Check carefully and if the nuts are bottoming out then change ALL the studs.

          I can't see the photos clearly.

          Wouldn't there be more damage to the rim and the holes if the studs had failed in shear?

          If the nuts were bottomed out I would have thought that would clamp the flange to the hub and there would be damage to the centre of the wheel (the thin part clamped to the disk hub).

          From what I can see of the pictures, five of the six studs look symmetrical as if they failed in tension and only the sixth is different.

          I need a new screen or a better set of eyes.

          Better photos would have helped too.

          S
          sweetpea
          Senior Member
          Last edited by sweetpea; 07-05-2016, 12:13 PM. Reason: spelling
          155 SX with dual battery and Polyairs in the rear springs..

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          • #20
            Hi
            Just undo one on the other side of the car
            See how tight it is
            Then measure length of stud protruding and compare it to the wheel nut
            White 2010 gx diesel auto, bilstein shocks 50mm lift king springs, tjm steps, warn 9500, lt265-65-17 bfg atko on steel rims. Racor 230R10 filter
            Adelaide based

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            • #21
              A lot of aftermarket wheels use tapered wheel nuts, its doubtful the wheel nut are bottoming out. If anything i would double check the number of threads engaged.
              Another thing you need to look at is most aftermarket wheels aren't hub centric like the oem wheel and all the cars weight is supported by the studs.

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              • #22
                Originally posted by Jerrers View Post
                A lot of aftermarket wheels use tapered wheel nuts, its doubtful the wheel nut are bottoming out. If anything i would double check the number of threads engaged.
                Another thing you need to look at is most aftermarket wheels aren't hub centric like the oem wheel and all the cars weight is supported by the studs.
                this is what I mentioned on here in another thread.
                Were the studs taking the load of the car and not the hub.
                Are Prado studs designed to take the vehicles load?
                As I posted in another thread my brother had a similar failure as the aftermarket rims did not fit the hub correctly and the spacer ring had moved.
                the studs were taking the load.
                Not a Prado, but since putting the spacer rings in correctly no problems

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                • #23
                  Originally posted by Fred63 View Post
                  this is what I mentioned on here in another thread.
                  Were the studs taking the load of the car and not the hub.
                  Are Prado studs designed to take the vehicles load?
                  As I posted in another thread my brother had a similar failure as the aftermarket rims did not fit the hub correctly and the spacer ring had moved.
                  the studs were taking the load.
                  Not a Prado, but since putting the spacer rings in correctly no problems
                  If the studs are in shear rather than tension the wheel will bounce around on the thread and very obviously damage the thread and the hole in the wheel.

                  S
                  155 SX with dual battery and Polyairs in the rear springs..

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                  • #24
                    I just did a tyre rotation on mine after the big T replaced some bushes. They were far too tight. Most I could undo after jumping on the wheel brace. Others needed a breaker bar. I really don't know what (or if ) they were thinking.
                    Greg - 08 D4D Prado,
                    Some trips done - Cape York, Fraser Island, Simpson Desert / Central Aust, Vic High Country.

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                    • #25
                      As it is the left side wheel that came off, I still have suspicions that it was one or more loose nuts that have caused the problem (do you know that only left hand wheels will come off due to loose nuts?). Anyway, from looking at the wheel, I can only see three studs in the wheel. If any of the studs were not found, or were missing a nut, then it is highly likely a few loose nuts caused the problem. Why do I say this? We had a wheel come off at 100 on the Hume, cause, not fully tightened nuts.
                      Michael and Kelly

                      [SIZE=1]1999 Prado Snowy 3.4L petrol, Ultimate Suspension 50mm lift (2013)[/SIZE][SIZE=1], BFG A/T, bull bar, winch, Twine hot water shower, home made rear drawers, Shippshape car top tent, UHF radio, tablet GPS & Navman GPS (both running OziExplorer)[/SIZE][SIZE=1], Spot 1, solar panel, second battery, inverter, Engel fridge and more[/SIZE]

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                      • #26
                        Over the years I have broken at least a dozen wheel studs on my Prado. It got to the point that I would keep a torque wrench handy to check the wheel nuts during breaks on rough trips. Thankfully I believe I have a solution for those people with aftermarket wheels who have this same problem.

                        As a bit of background information on the car I have been running aftermarket rims – Dick Cepek Torque with 285/70r17 almost from new.
                        • With standard wheels I had absolutely no issues.
                        • Aftermarket wheels and Toyota rotors from memory I rarely had issues.
                        • Aftermarket wheels and popular aftermarket rotors had more issues with broken studs than the original rotors.

                        Normally when I found a broken stud I would find that some of the other wheel nuts on the affected wheel were lose. This leads me to believe that the wheel nuts were working lose despite being torqued to the correct value whenever I broke wheel studs.
                        Forever torqueing the wheel nuts drove me a little nuts and I tried lots of different things (Steel Lug nuts, Alloy lug nuts, Hub centric rings) none of which worked until I stumbled across extended thread lug nuts.

                        https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

                        These give about another 6mm of thread engagement with a standard acorn type wheel rim. Previous to using the extended tread lug nuts the standard acorn type lug nut only had ~10mm of thread engagement. I have been using these for the last 8 months and have had no further issues.

                        If you have aftermarket alloy wheels with standard acorn nuts look at wheel studs with the rim off. If you only see about 10mm of clean fresh tread I would recommend to change to extended tread nuts ASAP.

                        Overall it surprised me that I can buy a brand name alloy wheels and using standard wheel nuts that I would have these issues.
                        Last edited by netarch; 11-01-2018, 12:33 PM.
                        Prado GXL 150 D4D, OME Suspension, Safari Snorkel, Brown Davis Underbody Guards, T13 Bull Bar, Warn XP9.5, 285/70 r17 Cooper STTs on Dick Cepek Torque rims,

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                        • #27
                          ^ I can't say I am surprised, aftermarket wheels can be painful unless you get ones specifically designed for the car or custom made.

                          A lot of 79 series utes have this problem they actually run an M14 stud as well and from the many cases I have seen it comes down to poor rim quality, incorrect wheel nuts or incorrect torque.

                          I had a custom set of Walker Evan alloy beadlocks made with a nut seat to suit the factory Toyota alloy loose washer nuts also had the centre hole bored to suit the 79 series hubs. They got pushed fairly hard off-road, and never even needed to be re torqued.

                          It is great to hear you got to the bottom of your issue, i can't stress enough how good the factory Toyota alloy wheel nuts are unfortunetly not any wheels are available to suit.

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                          • #28
                            As above:

                            Overtightened nuts

                            Wrong wheels, if you look at the prado wheels, when fitted the centre hole engages the hub, if an after market wheel doesn't then you'll most likely have problems.

                            If you change from steel to alloy, with some after market alloys the studs maybe to small, this is common issue when alloys are fitted to a caravan, you may find only a few threads engage the nuts.

                            Wrong nuts fitted.
                            HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

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