Tyre/wheel legalities

[lucifuge]

Maybe this is a state-dependent question, but what are the current legalities on tyre/wheel widths?

I have an NC an am keen on a wider wheel/tyre combo than my current 17x7 stockies. I am keen on the Enkei RPF1's and while an obvious choice is 17x8, i noticed some sweet looking NC's with 17x9's. I know a 245x40x17 would stick out about 3cm from the car. Anyone know if this is a straight out no-no?

[hks_kansei]

yep, state dependant.

NSW uses a simple +2 and +1 system from memory, you can go 2" larger rim diameter, and 1" wider.
so on your NC it would be 19x8 max.


in Vic you are allowed to go 15mm larger rolling diameter (inc tyre)
and 25mm wider


those are just off the top of my head, so check the standards with your state's governing body beforehand.

[lucifuge]

...is getting the fenders rolled a big drama? Apparently on the NC, there's a of an issue with the rears to fit such a combo ...some panel that left as is would interfere. Do you need to be overly careful who rolls them.. which tyre company...or should they know what they're doing? Just trying to put my paranoia in perspective before I jump in.

[PUR157]

NSW uses a simple +2 and +1 system from memory, you can go 2" larger rim diameter, and 1" wider.
so on your NC it would be 19x8 max.

Is this while retaining original (or as close to as possible) rolling diameter as well?

[philz]

The problem with rolling if not done properly it will crack.

Some better shops out there use a heat gun, to soften up the paint, and roll the guards.

I'm not 100% sure on the NC, though I am looking at the current Hyperev mag,

And its seems they are runnuing 7-8inch, offset is minimum +40

If you want to run staggered width, say 8 at front an 9 in the back, you would also need staggered offset as well.

For 9" at the back I would be looking at +55, 8" front - maybe +45?

Integral kobe has a really nice setup with ce28, they are 17x7.5 with +33 offset all round, which is quite aggressive on the NC, and this would be my pick in offset and width..

edit: Also will you be lowering this car?

[lucifuge]

its already lowered with the Eibach pro kit

do u have a link to pics this guys car (kobe)?

[philz]

Ahh I see.

Actually what I wrote was wrong.. it's actually front: 17x7.5 +33, rear: 17x8.5 +40
CE28:



This is the same car, but it's got re30's, though it's 17x8.5 all round: F:+47, R:+40

[StanTheMan]

what state are you in lucifudge?

[lucifuge]

ACT

[StanTheMan]

sorry don't know my way around ACT wheels & tyres legalities.....good chance it will be the same as NSW?

[hks_kansei]

Is this while retaining original (or as close to as possible) rolling diameter as well?

I cant really say, but I would presume there is also a regulation to keep it within X%

[bruce]

Its got a beard and goatees.

[lucifuge]

hmmm don't know, maybe ACT's ruling is same as NSW. deserves a check.

[philz]

Its got a beard and goatees.

and sideburns

[StanTheMan]

If its the same as NSW ......

increase of 25mm in width
a decrease of offset of 12.5 mm (per rim)
size of wheel does not matter as long as the total height or combination of wheel & tyre is not more than 15mm higher or lower than standard.

of course you can always get it engineered......
http://www.rta.nsw.gov.au/registration/ ... 9_rev4.pdf