Tyre size increase - legal limit?

Submitted: Tuesday, Feb 07, 2006 at 15:59
ThreadID: 30524 Views:8001 Replies:5 FollowUps:5
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Hi everyone,

I remember a few weeks ago it was mentioned that a new rule to change the maximum increase in rolling diameter from original tyres from 15mm to 50mm was under review.
Anybody knows what the status is?
What is the legel limit for an increase in tyre size at the moment and is it likely to change soon? But then when?
Thanks,

SLY.
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Reply By: flappa - Tuesday, Feb 07, 2006 at 16:03

Tuesday, Feb 07, 2006 at 16:03
In its simplest terms . . . You are currently limited to 15mm increase in the max size shown on the vehicles tyres plaquard.

50mm increase is part of the new National Vehicle Code.

Now , thats the tricky part.

Submissions have only just finished , and its up for discussion , however , it would appear that some states and inspectors are using it already . . . dont know how , or why ?
AnswerID: 153637

Follow Up By: slyonnet - Tuesday, Feb 07, 2006 at 16:13

Tuesday, Feb 07, 2006 at 16:13
Any idea on which states are actually already using it? Sounds a bit fishy though. What's happening if you have an accident? Since the new code is not applicable yet, the insurance company can refuse to pay the claim, regardless of what the inspectors or state might use.
15mm is quite limiting and does not give you a significant increase in clearance.
SLY.
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Follow Up By: flappa - Tuesday, Feb 07, 2006 at 16:44

Tuesday, Feb 07, 2006 at 16:44
Tasmania Apparently (according to another forum).

Apparently (again 2nd hand) , a few NSW inspectors are using it ???

QLD apparently have no intentions of adopting it.

Note: I have used "apparently" because the info is sourced from other people and NOT first hand. I also use it because , why bother to ask for submissions , if its totally ignored , AND , how can it be "National" when QLD have no intention of adopting it . . .

It seems a LOT of info is missing in this matter.
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Follow Up By: slyonnet - Tuesday, Feb 07, 2006 at 17:29

Tuesday, Feb 07, 2006 at 17:29
Any idea on what the deal is in WA?
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Reply By: craig - Tuesday, Feb 07, 2006 at 16:25

Tuesday, Feb 07, 2006 at 16:25
what happens when you dont have a tyre plaquard ? I have a personal import ?
AnswerID: 153640

Follow Up By: flappa - Tuesday, Feb 07, 2006 at 16:45

Tuesday, Feb 07, 2006 at 16:45
I have heard you can use what is listed in the vehicles handbook. Assuming you have one of course . . .

With a personal import , rather then a Grey Import . . . do you have to meet the ADR's or not ?
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Reply By: craig - Tuesday, Feb 07, 2006 at 17:45

Tuesday, Feb 07, 2006 at 17:45
I do have a hand book and as for the ADR's no not realy it just had to go for a blue slip and was checked for road worthyness . seemed the 2 main things that were checked were the window glass and child seat anchor points. both were Ok as mine already had the mounts I just had to buy the bolts so he could see they were mounted. As for tyre size it comes with 3 different sizes so I guess I can choose the biggest and go up on that.
AnswerID: 153664

Follow Up By: Vivid Adventures - Tuesday, Feb 07, 2006 at 17:53

Tuesday, Feb 07, 2006 at 17:53
you could buy tyre placard - find the part number and order from manufacturer.
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Reply By: Snowy 3.0iTD - Wednesday, Feb 08, 2006 at 08:52

Wednesday, Feb 08, 2006 at 08:52
Slyonnet

Check out this site, it lists all the current regs state by state. However when it comes to the exact definition of a "Off-Road Passenger Vehicle", I have asked three different mobs including Toyo and got three different answers.

www.toyo.com.au/TechInfoPDFs/ Alternative%20Wheels%20&%20Tyres%20%20-%20Regulations.pdf

Regards Snowy
AnswerID: 153793

Reply By: slyonnet - Thursday, Feb 09, 2006 at 16:46

Thursday, Feb 09, 2006 at 16:46
The Toyo from Snowy site indicate clearly which state allow what and especially which are the ones who have already adopted the proposed national standard. WA is amongst them and I got confirmation today when I phoned the licensing department: They have adopted the new national standard and thus allow up to 50mm increase in tyre rolling diameter.
Thanks everyone for your answers. Great help.
SLY.
AnswerID: 154106

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