You
can get anything engineered. 6inch lift and 37's if you want. But. A VASS approved engineer will only engineer a vehicle using the VSB14 rules. Which the the Vehicles Standard Bulletin. Within these rules the maximum tyre allowance is 33inch. a 285 or a 305, as these have the same rolling diameter. A 315 is classed as a 35 so they are a no go. As for lift, 2inch is as big as you can go is suspension with 285's or 305's without an engineers, equate to 3inch in total. VASS engineers will only approve lifts of up to 4inch for suspension and 285's or 305's for tyres.
From my findings the only way to get 35's approved the right way, is to spend about 15k on Portal axles.
So to my first part, you can technically get any engineer to do the check over your car and approve it, if it passes. But you then need to hand over the certificate to Vic Roads. They will know if the engineer is approved or not and can refuse the certificate on the spot, and make you tow the vehicle home. Even if they do let it through, the boys in blue can't refuse the certificate given by your engineer, but they can contact Vic Roads and make them aware of this and Vic Roads can make your new certificate nul and void when it suits them. With a VASS approved engineers certificate, both parties
cannot refuse the validity of your certificate as it has been approved according to VSB14.
Rules and regs do change from state to state.
Read this link regarding different laws.
http://www.outbacktravelaustralia.co...dated-jan-2014
Also see this link for our discussion thread....
http://www.nissanpatrol.com.au/forum...lowed-what-not
Hope this helps.