Thread: Confused on measuring suspension height to check if compliant (suspesion/tyres)

Originally Posted by weeds

Separate to the other thread.......

QLD are reviewing the rules around lifts and tyres........

Sooooo.I figured I would actually put a tape measure over and see how easily I comply.....but one need to know how high the suspension sat when new.


It appears Queensland Transport are working off a database and are checking suspension height from center of wheel to top of wheel arch. I cannot find anywhere in Qld where all the stock heights are listed, I assume they may have contacted each and every manufacturer and they have supplied the figures, it would be god if they published them.

OK, the best I can find is this website Certification Unit Details it appears al manufacturers need to get an approval number and part of this is stating unladed and laden heights.

It seems a defender has the following, hopefully the attachment works
560mm Front Unladen (610mm with 50mm lift)
590mm Rear Unladen (640mm with 50mm lift)

and

525mm Front Full Bump
540mm Rear full bump

Centre of wheel, that easy
Top of wheel arch, umm....I assume top of flare? but the measurement don't add up, so i'm guessing its center of wheel arch (yep where the flare connects to) I roughly measured the flare and it about 95mm

My measurements to flare
505mm front with 130 (110HD) springs fitted
525mm rear with air suspension at 46psi

My rough measurements to guard (center of arch opening)
600mm Front with 130 (110HD) springs fitted
620mm Rear with air suspension at 46psi

q. I wonder what full bump means? I know I have way more than 20mm and 15mm bump stop clearance

Q. how do they measure on the side of the road......as they only have unladen and full bump measurements to go off........if I was 'un-laden' than I would be over height

either way I would be in for an interesting discussion as i'm sure they wont miss my rear coils missing

SCMP00218091709463 Road Vehicle Descriptor Suspension Heights.pdf

Would "Full Bump" be the height to the guard minus the bump stop height? All I can think of.
Also wonder if there are any variations for different configurations - 90/110/130 for instance.
What if it's a tray-back ute?
Seems to me like it's the usual half-cocked setup! Let's rake in some fines, and if anyone doesn't like it, they'll have to take us to court to sort it out!

What a ****ING joke!

Not you Weeds the damn stupid new laws and how quickly they decided to implement it.

People in brand new cars with 2 inches of lift are getting pinged. 2 inches of lift and 2 inch tyres means 3 inches of lift and apparently thats a no no.

Makes me wanna go out and get 37s just out of spite.

And then the Isuzu trucks are lifted from the factory.

Hmmm,
Doesn't affect me, but what happens for air bag suspension? Are they not variable on the move?

Perhaps a "moose test" or some other dynamic trial would be more appropriate?

Cheers

Originally Posted by DAMINK

What a ****ING joke!

Not you Weeds the damn stupid new laws and how quickly they decided to implement it.

People in brand new cars with 2 inches of lift are getting pinged. 2 inches of lift and 2 inch tyres means 3 inches of lift and apparently thats a no no.

Makes me wanna go out and get 37s just out of spite.

I think they've managed to convince themselves that any vehicle with ESC will immediately become a deadly missile if you alter wheel size/suspension lift. To my way of thinking, as long as all the wheels are the same rolling diameter (within reason) it shouldn't affect anything, except the speedo reading, and anything relating specifically to that.

Originally Posted by donh54

I think they've managed to convince themselves that any vehicle with ESC will immediately become a deadly missile if you alter wheel size/suspension lift. To my way of thinking, as long as all the wheels are the same rolling diameter (within reason) it shouldn't affect anything, except the speedo reading, and anything relating specifically to that.

Correct me if im wrong, but you could have lets say 2 inches of lift on an ESC model and if you add 1 inch of body lift then that also will get you pinged. Seems very odd and almost a knee jerk reaction rather than any thought out policy.

The 4x4 community needs to strike on mass.

Originally Posted by donh54

Would "Full Bump" be the height to the guard minus the bump stop height? All I can think of.
Also wonder if there are any variations for different configurations - 90/110/130 for instance.
What if it's a tray-back ute?
Seems to me like it's the usual half-cocked setup! Let's rake in some fines, and if anyone doesn't like it, they'll have to take us to court to sort it out!

Nothing will change for my non ESC defender

Re: Full Bump, yes that’s what’s I figure but the numbers don’t add up...

Re: difference between 90/110/130, I only opened the 110 HT pages and there seems to be no different between TDI, TD5 and TDCi in suspension heights

I have no issue with the existing rules just checking that I still comply after my suspension upgrade, the future changes mainly affects ESC cars which I don’t currently own or plan to own.

I’m not sure they are fining drivers on the spot, they get given a timeframe to comply....again I’m happy with that.

The website for national suspension heights is national as each car when realeased in Australia needs a page to itself.....which to me doesn’t look right and I’m guessing guessing this is what each state is looking at.

Originally Posted by DAMINK

What a ****ING joke!

Not you Weeds the damn stupid new laws and how quickly they decided to implement it.

People in brand new cars with 2 inches of lift are getting pinged. 2 inches of lift and 2 inch tyres means 3 inches of lift and apparently thats a no no.

Makes me wanna go out and get 37s just out of spite.

Again, I got no issues......the new laws are not in therefor they can only use the old laws which lots don’t comply with...and yep if you have an ESC’d car you need the at least comply with current laws in Queensland.

I think the ones getting pinged are outside the rules....

Brand new cars with 2” suspension lift is OK from what I have researched

Brand new cars with tyre increase I haven’t got my head around with the existing rules......