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Milton477
26th February 2007, 01:21 PM
As a newcomer to Qld & the country for that matter I am struggling with some rules & regs. I want to fit 245-75-16 tyres to my Discovery 2 which comes with 235-70-16 & I have been told by the supplier that this would be illegal as the 245s are more than 15mm taller than standard tyres.

How does one get around this? or do you? What do insurance companies do in the event of a claim?
Greylandy
26th February 2007, 01:37 PM
It is the same in NSW .. if you exceed the rolling diameter of the standard tyre size recommended by the manufacturer by 15mm, it will render the vehicle unroadworthy. I'm not sure if you can get around it by getting an engineers certificate but that will mean $$$ on your part.

Many 4WD's on the road are unroadworthy, especially the guys running 33" and over. The good thing is .. this law is not enforced at all, unless you get a copper who really knows the laws .. or an insurance company that looks for ways not to pay out on a claim. Essentially a lift kit over 2 inches are also deemed unroadworthy but same thing applies .. they don't have the systems or knowledge in place to police it.
George130
26th February 2007, 01:40 PM
The legal way to solve it is with an engineers certificate. Otherwise you can't put them on.
Milton477
26th February 2007, 02:05 PM
Thanks guys

I guess that I will be sticking with standard & taking the chicken track on odd occasions. It would have been nice to have the added ground clearance where the big wheeled road pressured nuts have dug corresponding sized ruts in the sand. The up side is that the bottom of my diffs will always be nice & shiny??
George130
26th February 2007, 02:20 PM
The trick is get 2 sets of tyres. Then you can have your road set and you play set.
isuzurover
26th February 2007, 04:58 PM
The legal way to solve it is with an engineers certificate. Otherwise you can't put them on.

Not in QLD - practically impossible to get larger tyres engineered.

When/if the NCOP comes in, 50mm larger will be possible.

EDIT - don't go by the sizes on the sidewall. Check the rolling diameters on the tyre manufacturers website. In practice you can usually go 1" lerger in diameter without a problem.
Diff
26th February 2007, 05:16 PM
The tyre guys had no problem puting 245/75 on my D1 or 235/85 on my mated D2 or 33' on my other friends defender!

Legal, Well I thought it was 15mm taller not rounder. and if a copper or an insurance guy would spot them as not being standard they would have tho be a rover guy and a good bloke and let you go:) . Its not like 33' or 35' on a rangee that stand out like dogs....