Almost Legal 35" Tires

[Chook]

I was wondering if anyone has some sort of official document that shows 2008 H3 Adventure is fitted standard with 285-75-16 Tires ?? New Laws passed here in Australia has approved +2" Tires as a legal modification. The bad news is even though I have the Adventure model "ALL" H3's here only came with 32" Tires. I tried GM in Australia & GM USA to see if they could give me a letter say the H3 Adventure is designed for 285-75-16 Tires but they wouldn't come at it. GM Aust said no we only approve 265-75-16 and GM USA said see GM Aust.

 

[Expendable]

I was wondering if anyone has some sort of official document that shows 2008 H3 Adventure is fitted standard with 285-75-16 Tires ?? New Laws passed here in Australia has approved +2" Tires as a legal modification. The bad news is even though I have the Adventure model "ALL" H3's here only came with 32" Tires. I tried GM in Australia & GM USA to see if they could give me a letter say the H3 Adventure is designed for 285-75-16 Tires but they wouldn't come at it. GM Aust said no we only approve 265-75-16 and GM USA said see GM Aust.

Lynch Hummer's H3 changes by year (2006-2008):
http://www.lynchhummer.com/changes/h3changes/h3index.html

2006 H3 brochure page:

2007 H3 Brochure Page:

2008 H3 Brochure Pages:

Hope this helps!

 

[Chook]

Thanks Expendable.

I think the Mini Brochure PDF in the link is going to be more credible than the JPG (too easy to photoshop) but I will try them in any case.

I also thought if they question if they are legitimate I would send them online to either this site or one like Tirerack where the size comes up there.

http://www.tirerack.com/tires/Selec...3+Adventure+Package&autoYear=2008&autoModClar=

Cheers,
Chook

 

[Schwarttzy]

That's awesome that you could legally run 35's down-under now.

 

[Xlr8n]

You won't likely be able to get around your law as the vehicle in question didn't come equipped with the 285's in the country of origin to which the law pertains.
You will however, be able to mount up to nearly a 34" tire. A 295/75r16's (33.2") and would be a significant increase in size, as would a 305/70 (33.0") compared to the stock 265 (31.7").

 

[bebe]

Doesn't it say the tire size on the door sticker?Bottom right Drivers side?

 

[08H3]

Good luck, but I really doubtful that you're going to be able to get around Australian laws using US specs.

 

[Chook]

Doesn't it say the tire size on the door sticker?Bottom right Drivers side?

Exactly my problem Bebe, it is there but it states 265-75-16. (All South African Built H3 only came with 265-75-16 from the factory)

As Xlr8n says above, even with the new +2 rule I can only go to 34" legally with my door sticker.

My plan is to use the documentation to show that the "Adventure" model with the lower diff ratio was designed for the 285-75-16. I have already had success with fitting a front mounted hitch receiver using the USA Documentation to get approval to fit it here (the Transport Engineer just required an ISO or International Std to show the item was designed for my vehicle). I am hoping I can do the same for the 285-75-16 Tires........

Cheers,
Chook

 

[JGBB04]

I'll check with/ 1 of the guys here that still works at an ex Hummer dealer, see he can find spec sheet or something. Also I can get you a pic of my door sticker

 

[bebe]

This?

http://www.hummer3.net/specs.html

 

[nugget]

Reckon you might be pushing the proverbial uphill fighting the plated spec but good luck mate.

 

[Chook]

This?

http://www.hummer3.net/specs.html

Thanks Bebe but needs to come from GM to show the H3 Adventure was designed/tested/approved to run 285/75/16 as standard.

Nugget is correct that the Australian Plate is hard to argue against........ but if I go to a transport engineer with GM Factory Spec I am hoping he can give me a Modification Plate for the 285/75/16 Tyres (then I will be legal for the 35"s under the new +2" rule)

In fact this Transport Engineer I have dealt with before might even be swayed with a picture of your tire plate especially if it has an ISO or other international standard also printed on the plate. (this is how he approved my Front Hitch Receiver).

 

[Chook]

Good luck, but I really doubtful that you're going to be able to get around Australian laws using US specs.

If it is a USA Spec yes, but the Transport Engineer I have used previously advised if I can show it has been designed/tested specifically for this vehicle using ISO or any other International Standard then Australia must accept it.

 

[Chook]

I'll check with/ 1 of the guys here that still works at an ex Hummer dealer, see he can find spec sheet or something. Also I can get you a pic of my door sticker

Hey JGBB04 ......... Any news from your Guy ??? Even a photo of your door sticker will help if you can.

Cheers,
Chook

 

[skippy]

chook i have had a cop on the logan motorway pull along side me and tell me (while doing 100km/hr) that my tyres were illegal because they stick outside the guards! he said get smaller tyres or bigger guards?
also my insurance company paid out when i had an 8" lift and 35" tyres!
one trick that nugget told me was to have black wheels so it doesn't look obvious. also the 35" tyres on the h3 looks normal 33" tyres with a lift looks like the tyres are too small

Are you staying dry?
i will give you a call later!

 

[HUMMERADDICT]

If you're willing to change wheels go with 305/65/18 BFG A/T K/O. 33.7" tall. Exactly 2" bigger than the stock 265's, which are 31.7" tall.

 

[Blacksky]

Hey Chook.

Had any luck yet with your engineer and the specs?
I'm due for new tyres and am keen to get 35's.

 

[Chook]

Hey Chook.

Had any luck yet with your engineer and the specs?
I'm due for new tyres and am keen to get 35's.

I decided to just run them without approval ...........Feedback from other Aussie H3 Forum Members (Nugget/Skippy) suggested Inspector Plod is not too interested unless the wheel tyre combination sticks outside the body. With our Aussie H3 already coming with the flares they sit inside so I am not that concerned. I took off the rear mudflaps & put on bigger rubber ones that cover all the tread to look more legal & protect those following.

 

[skippy]

cool i have to see it

 

[nugget]

Good move to replace the mud flaps chook as the wallopers are quick to make sure the mudflap fully covers the tread when looking from behind and that it is no more than 300mm from the ground.

I also had a nasty copper chat me in Augathella for not having front mud flaps. The Defender comes without front mudflaps and is legal so not sure what sort of thorn was in the ball sack of his Reg Grundies that day. Oh that's right..he was a Pom..nuf said...

 

[Chook]

Here are some photos with the new 35" tyres fitted (Mickey Thompson ATZ 4 Rib 315/75/16)

 

[Vincent Prince]

So how much do they stick out past the guard ?

Here are some photos with the new 35" tyres fitted (Mickey Thompson ATZ 4 Rib 315/75/16)

View attachment 9068View attachment 9069View attachment 9070View attachment 9071View attachment 9072View attachment 9073

 

[Chook]

So how much do they stick out past the guard ?

They wouldn't normally but the wheel offset on these wheels is "0" so the tread is on the edge. (Factory is Offset +20)

 

[Schwarttzy]

Awesome, I love your choice of tires.

 

[Vincent Prince]

I was wondering if anyone can help me I'm Thinking about getting some 20"x8.5 +10 rims and then putting on some LT305/55R20 E121S or LT295/60R20 E126Q.. But wondering about load rating and will they stick out side the fender or rub ?