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Old 03-06-2008, 11:36 AM   #1
BLACKAUXR8
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Default 20's legal on series 3 Au

I was pulled up for my wheels on sunday one day after getting the car back on the road. I have since found out from the mechanic doing the roadworthy for me today that the law states in QLD anyway that your aloud 2 inchs bigger in RIM diameter not over all diameter. Since mine is a series 3 and the series 3's came out with 18's on the TE,TS and Rebels and pursuit's so im assuming this would make them legal as an 18 inch wheel is standard on a series 3 falcon? Whats do other people think of this? My mechanic is looking into it and hopefuly should be able to have a definite answer this afternoon.

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Old 03-06-2008, 11:44 AM   #2
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thats correct ... but it goes on what you're tyre plackard says on you're car?
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Old 03-06-2008, 12:19 PM   #3
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Last I looked on the qld transport site, it didn't mention the 2" size differance rule, only +/- 25/15mm circumference or there abouts
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Old 03-06-2008, 03:28 PM   #4
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yes stealth au i talked to the mechanic today and he looked into it. He is under the impression as long as the overall circumfrance doesnt increase 36mm it is legal? MY car now has to be inpeceted by queensland transport so i will be asking the question to find out. Either way i think they might just be legal
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Old 03-06-2008, 05:48 PM   #5
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just had a look, rolling circumfrance can't change more then +15mm -26mm
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Old 03-06-2008, 06:33 PM   #6
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Quote:
Originally Posted by BLACKAUXR8
Since mine is a series 3 and the series 3's came out with 18's on the TE,TS and Rebels and pursuit's so im assuming this would make them legal as an 18 inch wheel is standard on a series 3 falcon?
I was under the impression the two-inch rule applied to your particular model, and to whatever your placard has.

For example, even though some models in series 3 had 18" rims, it wouldn't go on the fact that SOME variants of the S3 had the 18", it would go on whatever your particular placard says it came with.

Not sure how true any of this is, its what I've heard and I'm just posting it - could be totally wrong.
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Old 03-06-2008, 11:20 PM   #7
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NSW is the +/- 15mm on total rolling diameter rule.

I have a bookmarked web-page somewhere that has a calculator on it for working out exsiting diameter and what you can go too.
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Old 04-06-2008, 02:13 AM   #8
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G'day

This may not be any help being a SA rule but from what I've read it sounds the same for you, and agrees with others above aswell.
You can go 2" larger in rim diameter(but would have to lower the profile of your tyre) to what was standard on YOUR car only, not the whole range, e.g. if your car had 16's standard then you can only go to 18's.
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Old 04-06-2008, 06:12 AM   #9
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go get a t series tyre placard, and say your car was optioned with 18's
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Old 04-06-2008, 06:44 AM   #10
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As said before, according to the most recently updated file relative to this on QLDT's site, there is no mention of limitations between rim sizes, only rolling circumference.
http://www.transport.qld.gov.au/reso...on_jan05v2.pdf
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Old 04-06-2008, 05:44 PM   #11
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ehh i spose cops arnt really to fussed about rims, i been driving on 20's for years and no cop bothers.
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Old 04-06-2008, 06:36 PM   #12
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Quote:
Originally Posted by eXi7w0unD
ehh i spose cops arnt really to fussed about rims, i been driving on 20's for years and no cop bothers.
not always true ...

My cousin has 28"z on his Hummer and 24"z on his 300C, and he gets pulled over ALL THE TIME ... even though he has an engeneers report for it!
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Old 04-06-2008, 07:13 PM   #13
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how do the regulations go regarding width?
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Old 04-06-2008, 09:23 PM   #14
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I thought the 2" rule applied to that model, eg AU which means your OK you just need to move to Victoria.

Width is not more than +2" and not more than 1" increase in offset.

I going from memory here folks feel free to correct me.
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Old 05-06-2008, 02:53 PM   #15
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Quote:
Originally Posted by V3RSAC3
not always true ...

My cousin has 28"z on his Hummer and 24"z on his 300C, and he gets pulled over ALL THE TIME ... even though he has an engeneers report for it!

yea well 28's and 24s are a big difference dude. 20' is small as compared!
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Old 05-06-2008, 11:14 PM   #16
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guys guys guys.... please refer to your OWN STATES LAWS not other states...

they are ALL different which makes it a pain on forums...

in QLD +15mm OR -26mm OVERALL diameter is the go... my 245/30R20 tyres are perfectly legal

your next issue is width.. which i think mine pass (didnt really bother checking that one)

and then the other is wheel TRACK which again i cant remember as mine isnt altered much

in NSW i know they use the +2" rim diameter rule

as long as your tyres are right blackauXR8 then you will be fine as if you run 225s you may be BELOW the required max load rating for the car
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