Your advice please 18 inch wheels vt commodore ???? Nsw ??

[11gothevt11]

HI there

I just bought a set of 18's for my vt wagon just need a little info off you ??

I have read differant post on this some saying

The 2 inch rule???

Some saying rolling diameter???
Can anyone confirm whats the rule in NSW????
Does anyone have 18 inch wheels on there vt is in Nsw???????

How long have you had them on your car did the cops ever say anything?????

PLEASE IF ANYONE HAS ANY COMMENTS ??????

[Zeussy]

In N.S.W. The law is 15mm +/- the original diameter of your wheel/tyre combo.

Measuring from the edge of the rubber - bit that sits on the ground, accross the face of the rim, and back accross the other side of the rubber. If that makes sense... Looking at the rim, the whole DIAMETER.

It used to be rolling diameter +/- 25mm, but that got changed a little while back. And I think the '2" bigger rule' was more of an estimate for police on the road side for a quick and easy guide to see if the rolling diameter would be out.


I have 20's on my VY, which came out with similar, if not the same size tyre as your VT would've (mine were standard 15" alloys, 6" wide) Have had them on there for close to 4 years, trouble free up to a few months back until i got defected for no door handles, then he went all out, even after a 45min 'disscussion' that my car was completely legal... Which it was/is...

Now its all been engineered, and 20's are JUST within the 15mm +/- rule, so I have paper work to prove it!!
So 18's should be alright.

You can only go upto 50mm/2" wider on the fronts though, so keep that in mind.
Check the RTA for guidelines on wheel and tyre regulations etc, its all in there if you can find it, lol.


Sorry for the long winded answer, just thought I'd give you all the info I could remember

[ethann]

Another thing just to keep in the back of your mind, There's less of a chance a popo fella is going to book you if you drive like a normal person.
If he catches you doing skids, speeding, Doing skids on the x mrs lawn, That will give him a reason to go over your car.
But if you drive under the limit, Drive to speed limits, Don't do skids it won't give him a reason to 'notice' you've got bigger wheels.
I've been pulled over numerous times in my 4b, 35's, 6" lift, mud all over it, cut rear quarters, Yes its all engineered but he didn't even batter an eye lid because I was doing the right thing and yeah etc etc


wow you think you jambled Zeussy haha.

[thewheeldeal com au]

Zeussy hit the nail on the head...

18" is no problem in NSW, or any state for that matter! Just make sure you run 235/40R18 tyres and you're set.

[Zeussy]

Another thing just to keep in the back of your mind, There's less of a chance a popo fella is going to book you if you drive like a normal person.
If he catches you doing skids, speeding, Doing skids on the x mrs lawn, That will give him a reason to go over your car.
But if you drive under the limit, Drive to speed limits, Don't do skids it won't give him a reason to 'notice' you've got bigger wheels.
I've been pulled over numerous times in my 4b, 35's, 6" lift, mud all over it, cut rear quarters, Yes its all engineered but he didn't even batter an eye lid because I was doing the right thing and yeah etc etc


wow you think you jambled Zeussy haha.

lol, nah I agree 100% with you, "cops aren't out looking for you" if your doing something stupid infront of them, then they will probly look...
Its all making the point clear for the O/P,

Zeussy hit the nail on the head...

18" is no problem in NSW, or any state for that matter! Just make sure you run 235/40R18 tyres and you're set.

Goodo, was thinking as I was writing it, hope all this is right. LOL. It wasn't that long ago since I had to go through it all. Having numerous 'discussions' with the tyre shops... lol

[11gothevt11]

In N.S.W. The law is 15mm +/- the original diameter of your wheel/tyre combo.

Measuring from the edge of the rubber - bit that sits on the ground, accross the face of the rim, and back accross the other side of the rubber. If that makes sense... Looking at the rim, the whole DIAMETER.

It used to be rolling diameter +/- 25mm, but that got changed a little while back. And I think the '2" bigger rule' was more of an estimate for police on the road side for a quick and easy guide to see if the rolling diameter would be out.


I have 20's on my VY, which came out with similar, if not the same size tyre as your VT would've (mine were standard 15" alloys, 6" wide) Have had them on there for close to 4 years, trouble free up to a few months back until i got defected for no door handles, then he went all out, even after a 45min 'disscussion' that my car was completely legal... Which it was/is...

Now its all been engineered, and 20's are JUST within the 15mm +/- rule, so I have paper work to prove it!!
So 18's should be alright.

You can only go upto 50mm/2" wider on the fronts though, so keep that in mind.
Check the RTA for guidelines on wheel and tyre regulations etc, its all in there if you can find it, lol.


Sorry for the long winded answer, just thought I'd give you all the info I could remember

Thankyou gives me peace of mind
Just wondering what size tyre's are you running???
My 18's i just bought (yet to pick up)have Front 235/35/18 &Rear 245/45/18
Do you think the 245's will fit????? Depends on wheels i guess

[Zeussy]

Thankyou gives me peace of mind
Just wondering what size tyre's are you running???
My 18's i just bought (yet to pick up)have Front 235/35/18 &Rear 245/45/18
Do you think the 245's will fit?????

N/P's mate,
I've got 225/35R20's all round, (pretty sure, from memory)

Have you lowered your car much? The 245's should fit, try them? lol
Just makes me as to why those different profiles? lol,

thewheeldeal com au would probly be best to answer if they'd fit on there, I've never tried it?

[11gothevt11]

N/P's mate,
I've got 225/35R20's all round, (pretty sure, from memory)

Have you lowered your car much? The 245's should fit, try them? lol
Just makes me as to why those different profiles? lol,

thewheeldeal com au would probly be best to answer if they'd fit on there, I've never tried it?

The car is stock height at moment
At the moment i am running 235/45/17 ........18's i havn't picked them up yet
These were 2nd hand god only knows why there differant profile
Thankyou

[SMURFTEC.]

i read the "2 inch rule" is 2 inches above the largest optional wheel size, i.e if your VT 15" wheels but there was an option for 18" wheels, then 20" would be legal.

[Zeussy]

i read the "2 inch rule" is 2 inches above the largest optional wheel size, i.e if your VT 15" wheels but there was an option for 18" wheels, then 20" would be legal.

Thats what the O/P was asking, he's heard so many stories about whats legal/illegal he wanted to know what was legal in N.S.W.

In N.S.W. there isn't a 2" rule, and AFAIK there never was, thats why I mentioned it in my first post being more of a folk law/generalisation than an actual law.
What state allows you to go 2" bigger rim size?

[11gothevt11]

Do you by chance have a quick link to that rta wheel and tyre page???

Thanks

[Zeussy]

That I do...

(Google is you friend... MY RTA... Then search VSI.09)

http://www.rta.nsw.gov.au/registrati...vsi09_rev4.pdf

Most of the relevant info is on pages 2 and 3.

So, essentially what i said, except for one TINY bit!!
upto 26mm/1" wider with out engineering, or 52mm/2" with engineering...
And even with engineering still only 8" wide on the fronts...
Sooo close..

Some of the relevant information for those who don't want to click the link...

Minor changes to wheels

Wheels up to 26mm wider than the largest optional wheel recommended by the vehicle manufacturer for the vehicle can be fitted without the need to notify the RTA.

The outside diameter of the wheel and tyre combination must be no more than 15mm over the largest diameter wheel and tyre combination specified for the vehicle and not more than 15mm below the smallest diameter wheel and tyre combination specified for the vehicle.

Replacement wheels requiring an engineering certificate

Wheels that exceed the diameter and width limits for minor wheel changes must be assessed by a signatory. If the signatory finds that the wheels are safe for your vehicle, you will be issued with an engineering certificate.

The vehicle owner must notify the RTA so that registration records can be updated. This is done by obtaining an “Adjustment of Records” and a “blue slip” from an Authorised Unregistered Vehicle Inspection Station (AUVIS). (contact the RTA Customer Service Centre on 13 22 13 for details of your nearest AUVIS).

The Adjustment of Records, blue slip and engineering certificate are then presented at a Motor Registry.

The owners copy of the engineering certificate is stamped and endorsed by the RTA and must be kept in the vehicle. This certificate must be presented to an authorised officer of the RTA or the Police when requested.

There are limits on the size of wheels that can be certified by a signatory.
These limits are as follows:

Rear wheels
The maximum permitted rear rim width for a particular vehicle is determined by its unladen weight (10 litres of fuel, no occupants or luggage) in accordance with the following tables:

Vehicles built to comply with ADR 24 (after 1/1/1973 for passenger cars)
Unladen weight ----------- Allowable rim width increase above the widest optional wheel available for the axle assembly used

Up to 800kg ----------------------------- 26mm (1inch)
801 - 1200kg --------------------------- 39mm (1.5 inches)
1201kg & over -------------------------- 51mm (2 inches)

Note: 25mm increase in wheel track limit also applies

Vehicles that were not built to comply with ADR 24 (prior to 1973 for passenger cars)
Unladen weight ----- Maximum rim width

Up to 800kg -------------------------------- 153mm (6 inches)
801 - 1000kg ------------------------------- 178mm (7 inches)
1001 - 1200kg ------------------------------ 229mm (9 inches)
1201 - 1400kg ------------------------------ 204mm (8 inches)
1401kg & over -------------------------------254mm (10 inches)

Note: 25mm increase in wheel track limit also applies

Front wheels
Front wheels shall be:
• No wider than the maximum permitted for rear wheels on your vehicle or 204mm (8 inches).
• No narrower than 70% of that fitted to the rear wheels.
• No narrower than a standard wheel fitted to the your vehicle as original equipment.