Outer Limits 4x4 Board

Who is running 37's or bigger on their truck and using it on day to day basis?

Just wondering how the ol Lux might go with a set of 37's- totally unecessary but well if it is allowed......

Or should I just stick with the plan and fit 35's? (thinking MTR's)

what do ya mean 37's are allowed

i run 35's and they are fine and its a daily driver.
37's are fine too as long as u have power steer

what do ya mean 37's are allowed

Well apparently some engineers in NSW give approval for the big meats. Definetly not an option in QLD though.

Yeh i run 37's and they're fine but fuel usage goes through the roof especially on the highway i found

slosh wrote:

what do ya mean 37's are allowed

Well apparently some engineers in NSW give approval for the big meats. Definetly not an option in QLD though.

heh when i saw gold coast im like, wtf 37's on a lux, tell him hes dreaming

Hmmm, never thought about the fuel usage. What would be the main reason for that- gearing out of whack or rolling resistance or something else?

slosh wrote:Hmmm, never thought about the fuel usage. What would be the main reason for that- gearing out of whack or rolling resistance or something else?

C. Extra height equals more air resistance.

D. All of the above.

"Lock in 'D' thanks Eddy."

And 37's in Queensland? As noted above, not legal. No ifs, ands or buts.

Cheers,

Scott

Gotta be carefull, i'd imagine that 37's would put ALOT of strain on your power steering (if u have it, which u should with anything above 33's). Mostly when creaping tho, but the units moving alot of rubber!

the engineer may approve them but they r still not street legal...

the fact of the matter is theey r designed 2 run on an 8.5" wide rim and u cant run wider than an 8" rim therefore illegal on the street.

i know coz i had the same prob the next day after i got mine engineer approved with 35x12.5x15 MTR's. it was all in the report as being good but the copper who pulled me up knew that that particular tyre was designed 4 an 8.5" wide rim and he also knew that u cant run anu wider than 8: rims so therefore gave me 24hrs 2 get my shit home and change the tyres and if he catches me again doin it he will defect it, mind u i know street 37" MTR's not daily tho so i take my chances

hypolux wrote:the engineer may approve them but they r still not street legal...

the fact of the matter is theey r designed 2 run on an 8.5" wide rim and u cant run wider than an 8" rim therefore illegal on the street.

i know coz i had the same prob the next day after i got mine engineer approved with 35x12.5x15 MTR's. it was all in the report as being good but the copper who pulled me up knew that that particular tyre was designed 4 an 8.5" wide rim and he also knew that u cant run anu wider than 8: rims so therefore gave me 24hrs 2 get my shit home and change the tyres and if he catches me again doin it he will defect it, mind u i know street 37" MTR's not daily tho so i take my chances

how long since they have been on the tar, let alone the dirt

Old Yella wrote:

hypolux wrote:the engineer may approve them but they r still not street legal...

the fact of the matter is theey r designed 2 run on an 8.5" wide rim and u cant run wider than an 8" rim therefore illegal on the street.

i know coz i had the same prob the next day after i got mine engineer approved with 35x12.5x15 MTR's. it was all in the report as being good but the copper who pulled me up knew that that particular tyre was designed 4 an 8.5" wide rim and he also knew that u cant run anu wider than 8: rims so therefore gave me 24hrs 2 get my shit home and change the tyres and if he catches me again doin it he will defect it, mind u i know street 37" MTR's not daily tho so i take my chances

how long since they have been on the tar, let alone the dirt

yeah well thats another story

How often do you guys get pulled over in newcastle for your trucks Ben?

I dont think the cops around the hills really know the rules cause we never get pulled over for our tyres. There was one mention when i got done for speeding that the larger tyres may of affected my speedo but the cop didnt care that they were bigger.

hypolux wrote:the engineer may approve them but they r still not street legal...

In NSW maybe. In Queensland you cannot get an engineer's approval for bigger tyres. Period. Queensland Transport will not allow it because they don't want it done.

Scott

NJ SWB wrote:

hypolux wrote:the engineer may approve them but they r still not street legal...

In NSW maybe. In Queensland you cannot get an engineer's approval for bigger tyres. Period. Queensland Transport will not allow it because they don't want it done.

Scott

I think you are confusing an engineer certificate, with getting legally registered. In Queensland there are a lot of things that you can get an engineer cert for but it won't help the truck get registered. Unfortunately engineered does not mean regesterbile.

I agree you could not register it but I disagree that you can't get an engineer certificate for it. 2 very different things in Queensland

nit picking I know.

But I really hate work

OK, NOW I'm confused. What's the point of getting an engineer's certificate if it doesn't make it registerable? I must be missing something (again... )

But do you agree that a Queensland registered 4by ('Cruiser, 'Lux, Patrol etc. - nothing exotic) cannot legally run tyres 35 inch or larger on public roads?

If you know something about this that I don't, please share your knowledge!

Scott

NJ SWB in case you thought I was in QLD I'm not- just very close, so I'm under NSW law.

Hypo, I can't help wondering about what you say- your tyres require an 8.5 inch rim- why not get wider rims? I know its not legal with Hilux diffs, but surely OK with GQ or 80 series diffs? My understanding is u r allowed up to 1 inch wider than standard rim- and both of above came with 8 inch rims I believe.
Are 15 x 9 inch rims available?

Sorry. Saw Gold Coast and presumed Queensland.

Lucky b*****d!

Scott

A friend of mine who was having his modded Landrover engineered in Victoria was knocked back on both 12.5 x33 x15 and 12.5 x35 x15 BFG's because the engineer said that the Rim and Tyre association's minimum requirement for those tyres was a 10 inch wide rim ,which was 3 inches wider than the widest optional Rover rim. He had to borrow a set of 31's on 8 inch rims to get certification.

I drive a gq and was told in no uncertain terms by insurance and vicroads that I can't go any fatter than an 8 inch rim or else i'm unroadworthy and not covered. At least by racv anyway. I have 33's on an 8in rim and have no problems with insurance and getting a RWC. I was also told to run 35's I need an 8.5inch rim to be legal, but 8.5in rims are illegal so 35's are out. If you understand what I am getting at.

NJ SWB wrote:OK, NOW I'm confused. What's the point of getting an engineer's certificate if it doesn't make it registerable? I must be missing something (again... )

But do you agree that a Queensland registered 4by ('Cruiser, 'Lux, Patrol etc. - nothing exotic) cannot legally run tyres 35 inch or larger on public roads?

If you know something about this that I don't, please share your knowledge!

Scott

From the Qld DOT the go for width is;
"The maximum tyre width must not be more than 1.3 times wider
than the vehicle manufacturer’s widest optional tyre. However, in
the case of off-road passenger vehicles fitted with front and rear
beam axles, the maximum tyre width must not be more than
1.5 times larger than the manufacturer’s widest optional tyre."

As for tyre hight all I could find is;
The rim diameter may be varied from the standard size
but the overall diameter of the tyre must not vary by more
than +15 mm or -26 mm.

So going by this the even 35 is too big for a lot of 4wd's

as for engineer's certificate's just have a look on this site, their are heaps of stories of blokes getting a engineer's certificate for mod's only to be knocked back for rego or defected by QLD. DOT. It's a sh1t situation but one we are stuck with.

Heres one that will make you sratch ya head. My engineer used to work for some tire and wheel goverment specs body or something and he said that he will engineer 10''rims on my lux becasue there is a loop hole that says that the early luxs are also considered as a light truck which alows 10 '' rims so ill be getting 37s on 10''s engineered

gtwebbie wrote:Heres one that will make you sratch ya head. My engineer used to work for some tire and wheel goverment specs body or something and he said that he will engineer 10''rims on my lux becasue there is a loop hole that says that the early luxs are also considered as a light truck which alows 10 '' rims so ill be getting 37s on 10''s engineered

i went dowm this avenue myself and 4 the hassle it aint worth it..

Monty wrote:How often do you guys get pulled over in newcastle for your trucks Ben?

I dont think the cops around the hills really know the rules cause we never get pulled over for our tyres. There was one mention when i got done for speeding that the larger tyres may of affected my speedo but the cop didnt care that they were bigger.

not very often its always in the shed but yeah they r all over it up this way so if u c a copper u chnge the direction and route u r going 2 avoid them

slosh wrote:NJ SWB in case you thought I was in QLD I'm not- just very close, so I'm under NSW law.

Hypo, I can't help wondering about what you say- your tyres require an 8.5 inch rim- why not get wider rims? I know its not legal with Hilux diffs, but surely OK with GQ or 80 series diffs? My understanding is u r allowed up to 1 inch wider than standard rim- and both of above came with 8 inch rims I believe. Are 15 x 9 inch rims available?

i know this but from wot i have been told and been thru 8" is the maximum allowable width that can b registered even tho it came factory on certain vehicles..

TUFFRANGIE wrote:I drive a gq and was told in no uncertain terms by insurance and vicroads that I can't go any fatter than an 8 inch rim or else i'm unroadworthy and not covered. At least by racv anyway. I have 33's on an 8in rim and have no problems with insurance and getting a RWC. I was also told to run 35's I need an 8.5inch rim to be legal, but 8.5in rims are illegal so 35's are out. If you understand what I am getting at.

if u look at tyres specs u will find that MOST ( i say most coz i dont know the specs 4 every 12.5" wider tyre) 12.5" wide tyres require wider than an 8" rim, i know that the BFG 33x12.5x15 muddies i was running require wider than an 8" rim therefore they r not street legel

Thanks hypo- o ye wise one. You have obviously looked into this. I was wondering about the 8" max rim width cos I thought some Commodores or the like came with 18 x 9 or 19 x 9 inch wheels... looks like I was mistaken.

gtwebbie u must be laughing with the loophole u found- looked on my rego slip and my truck is classed as 'ute' unfortunately. Funny I can remember my old mans old MQ shorty being classed as 'light truck' tho.

hypolux wrote:

slosh wrote:NJ SWB in case you thought I was in QLD I'm not- just very close, so I'm under NSW law.

Hypo, I can't help wondering about what you say- your tyres require an 8.5 inch rim- why not get wider rims? I know its not legal with Hilux diffs, but surely OK with GQ or 80 series diffs? My understanding is u r allowed up to 1 inch wider than standard rim- and both of above came with 8 inch rims I believe. Are 15 x 9 inch rims available?

i know this but from wot i have been told and been thru 8" is the maximum allowable width that can b registered even tho it came factory on certain vehicles..

absolute rubbish, you can go 1'' wider than the maufacturers widest wheel fitted in the factory. commodores come out with a 19x 8'' wheel package these days.

I am not too sure about other brands of fourbyes, but certain variations of LandRovers were available with tyre sizes ranging from 6.oox16 which are about 29inches in diameter up to 9.00 x16 which on Michelins can be anything up to 37 inches in diameter and 10 inches wide,all on piss weak Rover diffs. If you have a Landcruiser, Patrol or Jeep you may find that these were supplied to various Military forces or Government departments with similar tyre options. Bill.

This is good stuff.