Dump that Line as low as your tyre profile! - DPI info

[Brazen]

Hmm interesting - never been to the WA DPI site before - we must be a lot more relaxed than eastern states guys on some rules. The one that really jumped out at me was how low our cars can theoretically be to the ground!...

For exhausts:

No part of the system projects below the rim lower edge  

And for the body kit / lowest part of body its the same:

No part of a vehicle or accessories (except flexible mud flaps) shall project below the lower edge of a wheel rim.

The distance measured from the ground to the lower edge of the reflecting surface of the headlamp must not be less than 500mm  

So for 18x7" rims allowed under the "without approval list" on a skyline (or 19's on a GTR or 350Z etc) with low profile tyres that theoretically lets us get the car WAY down low - not the 10cm Ive heard thrown around about the eastern states min clearance and referred to here in the West.

Even better if you are a GTR owner with 18" specced on your tyre placard you can throw on fat 20" rims with about 3cm of rubber - and have your kit and/or exhaust slung as low as 3.1cm

Maybe loads of you already know this stuff - so sorry - but interesting for me and maybe anyone else that hasnt seen the rules.

Another one people commonly refer to is to a need to get an "Engineering Certificate" for any mods you do for them to be 100% legal - but in WA it is also wrong - DPI have a list of modifications that you can be down WITHOUT approval, and then a simple "apply before you do it" form to fill out for any other mods that gives you an approval certificate to flash to the cops - as long as you apply before you mod.

Might be less hassle than I thought doing mods.

The worst deal though is for those of us without GTRs - that have tyre placards at a max reommended width of 7" rims. The legal maximum rim WIDTH in WA is 7" - unless you're car is tyre placarded as having came fitted with wider rims (eg GTR) - but even then u cant go any wider again than factory.

That is pretty ridiculous coz they allow you to go up 2 sizes in diamater (eg 16" stock to 18" aftermarket) - but no wider in width - and i aint even heard of a 18" rim thats only 7" wide.

However - of course you probably wont ever get defected for that one coz its hard to tell the rim width if they are stamped on the inside coz the width of the tyres is all they can see with a visual inspection. BUT on that note - keep your 18" tyres no wider than 245s - coz that is the widest legally allowed on a 7" rim - so any wider eg 265s on the rear and its easy to tell for a cop = reads the tyre and checks your tyre placard - so a GTST would get a canary coz the cop can see u are allowed only a 7" rim on your placard and read 265 or 255 on the tyre which is illegal to fit to a 7"... weird system.

More details for anyone else in WA who's never checked it out...

http://www.dpi.wa.gov.au/licensing/myvehic...s/approval.html

is a bugger though - cant go wider than 7" unless the stock specs (tyre placard) allows it.

[Steve]

Or you could go to the DOTARS website, and find out that the car must be no lower than 100mm when lowered, and must retain 2/3 of the suspensions travel.

These regs, I think you will find, apply to ALL of australia, as well as local state rules. The local state rules are probably to ensure loop holes are closed, such as in the circumsance where a 4wd may have side walls that exceed 100mm, it prevents them from having anything lower, so if it gets a flat, that part of the vehicle wont drag on the ground.

As for slacker than other states - in SA you arent even allowed to have a BOV fitted without a full emissions report (IM240) which can only be done at mitsubishi for a cost of over $3000

[Steve]

Tyre placards, they depend on who complied the vehicle. A mate who owns a QLD reg gts has up to 9 inch wheels allowed, as that is what it got originally complied with.

[mitchy_]

mine has 17" 255 written as the biggest on the tyre placard

so does that means i can have up to 19" 255's on my car?

[Brazen]

mine has 17" 255 written as the biggest on the tyre placard

so does that means i can have up to 19" 255's on my car?

Yep - but only as wide as the placard also says - is it 8.5" on the placard?? I am actually pretty sure the tyre width is only recommended... you are bound by the ADRs for the width rim shown on your placard... if your placard says 8" wide rims the ADRs will allow only 245s - so your entire placard is wrong for WA laws - see what i mean by how stupid the system is! ... but if the palcard allows 8.5 or 9" then u can go the 255s.... BUT according to the rules you MUST have the same profile tyres back and front (unless specified to have different front/rear combos on your placard - usually only for GTRs/300zx/350Z that came with factory option of diff front rear widths)... so ud need to have 255s on the front as well!

Heres the approved tyre fitments allowed for 18" rims...

TYRE SIZE... APPROVED RIM SIZES(inches)

235/40R18... 8, 8.5, 9, 9.5

245/40R18... 8, 8.5, 9, 9.5

255/40R18... 8.5, 9, 9.5, 10

265/40R18... 9, 9.5, 10, 10.5

225/35R18... 7.5, 8, 8.5, 9

235/35R18... 8, 8.5, 9, 9.5

245/35R18... 8, 8.5, 9, 9.5

255/35R18... 8.5, 9, 9.5, 10

265/35R18... 9, 9.5, 10, 10.5

[Elithrar]

I'd always stick with the ADR specifications; being at a Federal level, they actually override state-level restrictions, and therefore are grounds to fight any unjust yellows or such if you can actually be bothered.

And anyone with a scanner and a half-decent printer can make a 'new' type placard, if they so want...