DEFECTED... 31" muddies

Post by **trolley** » Mon Jul 20, 2009 10:49 am

i got defected yesterday, ive got 31" mud tires....
can i get this engineered or something like that???

and what is the biggest LEGAL tyre size for suzuki sierra.

Post by **v840** » Mon Jul 20, 2009 11:38 am

What suspension mods do you have? What steering do you use? Body lift? How tall? What back space are your rims? If a man says something, and no female is around to hear him. Is he still wrong?

More info = better answers. 31s have been engineered on zooks in QLD but there are a lot more variations in the engineering equation than tyre sizes.

Best idea is to get on the blower and call some engineers in your area. They are generally more knowledgeable than internet douchebags like me.

Post by **trolley** » Mon Jul 20, 2009 12:08 pm

ahhh, so it can be engineered???

that would be excellant

cheers mate

Post by **v840** » Mon Jul 20, 2009 12:10 pm

Well again, that depends on the mods you have made and the quality of work done. Talk to an engineer!

Post by **tanshi** » Mon Jul 20, 2009 12:25 pm

im pretty sure you will find that no you cant engineer bigger tyres in QLD. as in not at all.

Post by **trolley** » Mon Jul 20, 2009 12:57 pm

IT CANT BE DONE.

I JUST RANG AN ENGINEER.

SO WHAT IS THE MAXIMUM LEGAL SIZE THAT CAN BE PUT ON A SIERRA??

Post by **grimbo** » Mon Jul 20, 2009 12:58 pm

not in QLD you can't. 31s are waaay too big. Tyre size isn't an engineerable item from all reports these days. But as always your best bet is to contact your own local authourity and find out from them rather than relying on faceless names on the internet giving you legal advice

Post by **zookimal** » Mon Jul 20, 2009 1:23 pm

Don't quote me but something along the lines of +/- 15mm from standard placard size.

Post by **mnemonix** » Mon Jul 20, 2009 1:33 pm

Which would leave you with around 28-29"?

Post by **trolley** » Mon Jul 20, 2009 1:37 pm

15mm larger than stock is all that is allowed i just dont know what that is in overall inches???

Post by **lockdup** » Mon Jul 20, 2009 1:39 pm

1.7" over stock

Post by **grimbo** » Mon Jul 20, 2009 1:58 pm

trolley wrote:IT CANT BE DONE.

I JUST RANG AN ENGINEER.

SO WHAT IS THE MAXIMUM LEGAL SIZE THAT CAN BE PUT ON A SIERRA??

you didn't think to ask the engineer while you were talking to him as he will be the one able to tell you

Post by **trolley** » Mon Jul 20, 2009 3:10 pm

Nah he didnt know what size is allowed off the top of his head.

Post by **tanshi** » Mon Jul 20, 2009 4:16 pm

the most you will legally get on a sierra is 28"s

you can get 29-30 on one of the commercial models (utes) with the 16-6 tyres on the placard.

Post by **trolley** » Mon Jul 20, 2009 4:35 pm

cool, i rang the government and asked them about an ammendments to the law, because apparently they are thinking of modifying the law from 15mm to 50mm... they said they will get back to me about that.... ill let you guys know... because that will be frigging awesome

Post by **vandle** » Mon Jul 20, 2009 9:57 pm

I believe this is part of a Federal Gov. drive to standardise vehicle modifications across Australia. It is supposed to be based on the N.S.W. System. The general concensus is that it will tighten up in Victoria but ease it up abit in Qld. We will see if it ever gets off the ground. I heard that the second draft has been released recently. You never see any state Government agree with each other any other time so why now.

WT come out with the equivalent of 26" and NT with 28" correct me if i'm wrong so that comes into play as well.

Post by **Jock** » Tue Jul 21, 2009 9:29 am

Anything can be engineered IF you have the time and money

But as for qld laws on tyre size changing I would just buy some stocko tyres and rims get passed and then refit your old ones. MUCH MUCH cheaper

You probably pissed off the copper or qld tranport guy. so take it on the chin and deal with it

Post by **mnemonix** » Tue Jul 21, 2009 9:37 am

Jock wrote:Anything can be engineered IF you have the time and money

Like Pajero's on 44's

Post by **Ridge** » Tue Jul 21, 2009 10:32 am

You can go up 1" in tyre size, and a 2" lift anything more then that in qld and it is illegal.
The NCOP laws which have been talked about recently are unlikely to come
into effect anytime soon, the state governments will need to agree on them first.

Post by **alien** » Tue Jul 21, 2009 10:33 am

ahahah you must be the only one excited about NCOP =)

Post by **Ridge** » Wed Jul 22, 2009 11:29 am

alien wrote:ahahah you must be the only one excited about NCOP =)

there have to be a few others in qld too

if you really want big tyres legally, think about doing a lux/bundy diff swap. you would be able to go to a 32 or 33 (depending on what the luxs come with stock 31?). iv seen a few recently that have been done, mod plated and registered.

Post by **islandvitara** » Wed Jul 22, 2009 4:37 pm

Ridge wrote:
alien wrote:ahahah you must be the only one excited about NCOP =)
there have to be a few others in qld too

if you really want big tyres legally, think about doing a lux/bundy diff swap. you would be able to go to a 32 or 33 (depending on what the luxs come with stock 31?). iv seen a few recently that have been done, mod plated and registered.

in queensland?

Post by **vandle** » Wed Jul 22, 2009 4:55 pm

You need to check with an engineer about changing the track of the vehicle. If the new regs ever get through, there will be limitations on this too, they want to limit the increase in the track, also to include offset in rims. It will be interesting to see what actually comes out of all this. The fun police will be busy.

Post by **Dee** » Wed Jul 22, 2009 6:12 pm

trolley wrote:cool, i rang the government and asked them about an ammendments to the law, because apparently they are thinking of modifying the law from 15mm to 50mm... they said they will get back to me about that.... ill let you guys know... because that will be frigging awesome

ha. i reckon you'll be waiting a f*ckin long time.

Easy option =
Throw the stockers back on. Get it ticked off at the pits.
Keep the 31's for when you want to go wheeling...

Post by **Ridge** » Wed Jul 22, 2009 11:03 pm

islandvitara wrote:
Ridge wrote:
alien wrote:ahahah you must be the only one excited about NCOP =)
there have to be a few others in qld too

if you really want big tyres legally, think about doing a lux/bundy diff swap. you would be able to go to a 32 or 33 (depending on what the luxs come with stock 31?). iv seen a few recently that have been done, mod plated and registered.

in queensland?

yep, there was a stockman ute with lux spoa front and coiled bundy rear on 32s on ebay a few months ago it had qld plates. ill have a look for some pics to post up.

Post by **grimbo** » Thu Jul 23, 2009 9:14 am

Ridge wrote:
islandvitara wrote:
Ridge wrote:
alien wrote:ahahah you must be the only one excited about NCOP =)
there have to be a few others in qld too

if you really want big tyres legally, think about doing a lux/bundy diff swap. you would be able to go to a 32 or 33 (depending on what the luxs come with stock 31?). iv seen a few recently that have been done, mod plated and registered.

in queensland?
yep, there was a stockman ute with lux spoa front and coiled bundy rear on 32s on ebay a few months ago it had qld plates. ill have a look for some pics to post up.

just because it was for sale doesn't mean it was legal

Post by **vandle** » Thu Jul 23, 2009 4:18 pm

You are quite right Dee

I'll be doing a body lift on my walking frame when or more to the point if it ever gets through. Like I said when was the last time all state gov agreed on anything.

Post by **Sammyboy** » Thu Jul 23, 2009 8:31 pm

I'd be interested to hear more about this in relation to Victorian law. I have a Holden Drover with a 2" OME suspension lift, 15"x7" offset rims (i'm not sure what offset), and 235/75r15 MTR's. I think that these are great mods, without going too 'over the top'. When I replace my tyres within the next year, I plan to up the size to 30x9.5r15. If they are planning on tightening the laws in Victoria, is this likely to be an issue? By the way, my zook came out with 15"x5.5" rims as standard and 205/70r15 tyres.

Post by **Gwagensteve** » Thu Jul 23, 2009 8:40 pm

Yes it's illegal.

No, 30's can't be engineered under the current interpretation of the NCOP that Vic engineers are working to, as only commercial sierras that were complied on 6.00X16 tyres can exceed 28", however, proving that all axle components, ride height, brakes are the same might get you there. That's not something the engineers I've dealt with have entertained to date.

Will you have trouble/get pinged? I doubt it, even well into the future. A sierra just doesn't look overtyred on them.

Steve.

Post by **y0di** » Thu Jul 23, 2009 10:23 pm

205/70/15 tyres = 669mm

as of jan this year an increase in tyre size went from +15mm, to +50 mm, in qld.

so, you can fit anything up to 719 mm.

pick up a few tyre brochures, most have mm measurements, find one as close to 719 mm.

will.

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DEFECTED... 31" muddies

DEFECTED... 31" muddies

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