bigger wheels

et 1500 · Post by **et 1500** » Tue Jul 05, 2011 3:07 pm

hey guys am new to this site and the et scene i was just wondering what id have to do to fit a set of 17inch wheels to my et i tryed to fit them on my na n12 and they fit on the front with a 5mm spacer but not on the back as the rear control arm was hitting the wheel i was just wondering if the fact the et has disks at the back would make a difference at all just looking for suggestions on how to do this as i dont want to f@#k any thing up

thanks in advance

Valentich · Post by **Valentich** » Tue Jul 05, 2011 4:00 pm

I'll let the other guys answer your question.

But FYI
In NSW if you want to keep it legal, and put 17" rims
By the book, they can only put 185/45 R17
i.e. Total wheel diameter no more than 590.2mm & 200mm wide

LOL What a joke

Valentich · Post by **Valentich** » Tue Jul 05, 2011 4:15 pm

But maybe someone can help me, vehicle standards (and the Manual) say that the ET came out with 175/70R13

But The ET rimes are 14".

Any clarifications

Sorry for the Hi jack

Look at the articles under "ET Disc Conversion on your N12 EXA Turbo"
You will see a little mod suggested so the wheels wont rub.

et 1500 · Post by **et 1500** » Tue Jul 05, 2011 4:37 pm

im not to sure but mabey they are reffering to all n12s in the manuel ive got 13" on my et atm and they sit pretty snug to the caliper so mabey they made a hickup some were ?

cheers for the help mate ill have a suss now

Damo · Post by **Damo** » Tue Jul 05, 2011 4:58 pm

You can legally go 2 inch up in wheel diameter, and 40mm width over the largest tyre/wheel combo for the entire model run. So, ET's had 14's and 165's? So, 16's at 205 would be the biggest you could go without an engineer.

Damo

sashN12 · Post by **sashN12** » Tue Jul 05, 2011 4:59 pm

sorry to hijack, but, did u get that car through gumtree a couple months back? just remember the plates

et 1500 · Post by **et 1500** » Tue Jul 05, 2011 5:09 pm

sashN12 wrote:sorry to hijack, but, did u get that car through gumtree a couple months back? just remember the plates

yea mate

sashN12 · Post by **sashN12** » Tue Jul 05, 2011 5:20 pm

oh ok cool, i nearly baught it, just concerned about with transfering rego from vic. howd ya go with it?

et 1500 · Post by **et 1500** » Tue Jul 05, 2011 6:00 pm

sashN12 wrote:oh ok cool, i nearly baught it, just concerned about with transfering rego from vic. howd ya go with it?

havent done any thing yet just trying to get it running properly first then probs ronna make it stock take it threw regency and then modd it up again

tommyt · Post by **tommyt** » Tue Jul 05, 2011 6:05 pm

Lol thats the go im doin the same thing building it up stock pass roady and then mod the shit out of it.

et 1500 · Post by **et 1500** » Tue Jul 05, 2011 7:17 pm

tommyt wrote:Lol thats the go im doin the same thing building it up stock pass roady and then mod the shit out of it.

hell yea man cant wait to have it on the road do u have to get a roadf worthy cert wen u rego the car in brissy

et_rider · Post by **et_rider** » Tue Jul 05, 2011 9:06 pm

from memory if you pu a year reg on it you dont have to take it through regenecy chief

matthew

BlueEXA · Post by **BlueEXA** » Tue Jul 05, 2011 10:12 pm

You'll just need an ID inspection for rego and won't go over the pits unless they spot something really dodgy

I had my XR8 through there late last year when I brought it down from Qld.

Valentich · Post by **Valentich** » Tue Jul 05, 2011 10:20 pm

Damo wrote:You can legally go 2 inch up in wheel diameter, and 40mm width over the largest tyre/wheel combo for the entire model run. So, ET's had 14's and 165's? So, 16's at 205 would be the biggest you could go without an engineer.

Damo

UMMMM Sorry, Well its not that easy, I'm not saying this as a smart ass.
People get this wrong all the time, and get in trouble.
I'm not speaking for all states, I only know NSW.
Rule of thumb don't always work

In NSW the RTA (vsi09_rev4), you are allowed

"An important requirement for all replacement wheels is that the
wheel track must not be increased by more than 25mm
beyond the maximum specified by the vehicle manufacturer for that vehicle."
&
"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

OK if a wheel is 175/70R13 as stated in the manual

Its like this

175 x 70% = 122.5mm
then x2 for the upper and lower tyre wall
122.5 x2 = 245mm
now 13 inch is the rim diameter
so
13 x 25.4 mm =330.2mm
QED
Total diameter is
330.2 + 245 =575.2mm

Add the 15mm and you get
A total max of 590.2mm

Now if you want 17"
First the crap bit
175mm + 25mm = 200mm
So 205 are (technically) out
195 are the best you can have.

but screw that I WANT MY 205s

again 17" rim is 431.8mm
If you take this from the total max 590.2mm
you get 158.4

divide by 2 (/2) for the upper and lower tyre wall

158.4 / 2 =79.2mm

The tricky bit

79.2mm / 205mm then x100 = 38.6
as you cant get 38.6 series tyres you have to go to 35 series
QED
205/35R17
or
195/40R17

If you go through the same thing with 16"
205/45R16
or
195/50R16

But in theory you can go 195/25R19 and still be 100% legal

This is if you are really worried about keeping to the law LOL

But like Damo said, the trick is getting conformation of the largest from its model run and work from that, or get them engineered if you got the money.
NSW Road rules suck!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Andjeti · Post by **Andjeti** » Tue Jul 05, 2011 10:39 pm

As far as I am aware Qld is exactly the same, used to be the 2" larger rim and x" wider wheel, but it's changed to overall diameter and track width. (The exception being "minitrucks" which must have commercially graded rims and tyres)

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