Are TEIN Flex Actually Illegal on the MX-5?
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- Matty
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If you're talking about the legality of adjustable strut-top camber plates, it's an irrelevant point because the MX-5 doesn't have them nor does it need them. The MX-5 has double wishbone suspension with full factory adjustment of the camber and caster provided at the lower wishbone. The top of the shock (NB not strut) does not do any locating of the wheel, other than vertically.
The Flex does however have adjustable shock tube length and adjustable spring preload, either of which possibly might be illegal, though it'd be more to do with the set ride height and available travel (I believe, don't quote me).
The Flex does however have adjustable shock tube length and adjustable spring preload, either of which possibly might be illegal, though it'd be more to do with the set ride height and available travel (I believe, don't quote me).
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Re:
Matty wrote:Any reason given why?
At the time, yes. It was along the lines of the bottom part of the adjustable shock tube not meeting Qld Transport (and ADR?) rules. OK for a track only car though.
I can't remember the exact reason because I was so disappointed my eyes probably started to glaze over and I could only hear blah, blah, blah.
The SS is fine though.

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Ring up the RTA and ask them then report back. Hopefully someone at the RTA will know, but being the RTA you will probably get a different answer from everyone you talk to.
Could they be illegal because they allow the car to be lower than the mimimum legal ride height?
Could they be illegal because they allow the car to be lower than the mimimum legal ride height?
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No
There are no ADR's for shock absorbers or car suspension, only ride height. The car may not meet the ADR's if ride height is lowered excessively.
All states have agreed to implement the NCOP (National Code of Practice) for light vehicle modifications. The following link contains all requirements for the LS Code - Tyres, Rims, Suspension and Steering.
http://www.dotars.gov.au/transport/safety/road/bulletin/pdf/NCOP11_Section_LS_Suspension_and_steering_3Feb2006.pdf - link fixed!
Tein Flex shock absorbers are manufactured for MX5's. MX5 Plus are importing a set for my car.
The car may not meet the LS Code requirements if they are adjusted so that the suspension movement is reduced by more than one third.
I would also like to know where in legislation/code of practice that having an adjustable shock tube length is not compliant/illegal!!! Maybe it's a local marketing ploy to deter people from importing directly from Tein dealers in Japan?
I hope this assists you with your decision making.
Regards,
Danny
There are no ADR's for shock absorbers or car suspension, only ride height. The car may not meet the ADR's if ride height is lowered excessively.
All states have agreed to implement the NCOP (National Code of Practice) for light vehicle modifications. The following link contains all requirements for the LS Code - Tyres, Rims, Suspension and Steering.
http://www.dotars.gov.au/transport/safety/road/bulletin/pdf/NCOP11_Section_LS_Suspension_and_steering_3Feb2006.pdf - link fixed!
Tein Flex shock absorbers are manufactured for MX5's. MX5 Plus are importing a set for my car.
The car may not meet the LS Code requirements if they are adjusted so that the suspension movement is reduced by more than one third.
I would also like to know where in legislation/code of practice that having an adjustable shock tube length is not compliant/illegal!!! Maybe it's a local marketing ploy to deter people from importing directly from Tein dealers in Japan?
I hope this assists you with your decision making.
Regards,
Danny
Last edited by orx626 on Thu Feb 28, 2008 8:58 pm, edited 2 times in total.
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I have tein flex on our NB8A, it's got W.A. permits so 100% legal (as long as I keep the height it was measured at having then I got the permits which met ADRs).
There's no way i'd lower it anymore than that anyway.
There's no way i'd lower it anymore than that anyway.
If you had access to a car like this, would you take it back right away? Neither would I.
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