Club Touareg Forum banner
Cancel
Create thread New Garage Forums

Tyre speed rating

Jump to Latest
1 - 6 of 6 Posts

OILSLURPER

· Premium Member
Joined
·
2,928 Posts
Discussion starter · #1 ·
Save
Reply Quote Like Like
#2 ·
Given the speed legal limit even on our fastest road, I do wonder about the application of the speed rating requirements.

I reckon a court would have a hard time ruling against someone with tyres above an N rating, regardless of what's on the placard.
 
Discussion starter · #3 ·
I'm going to have yak with Qld Transport about 'roadworthy' and rotating diameter as my Treg is running OD tyres as fitted to a 4WD, not an SUV, but my tyres are otherwise compliant . :mad:I'm pissed about this whole rating topic as Euro vehicles get higher speed ratings due to their superior road network and speed limits, and it's reflected in their tyre ratings. Us dumb Aussies simply buy these cars and the ratings are way too high for our crap road and speed limits, yet our motoring agencies seem to not consider their practical application (thus, limits) down here. WTF? I own a 4WD and I'll apply the rules as they apply to 4WD. We need to get onto VGA about this with all 2003 to 2010 Tregs being "off-road featured", not SUV's. Kluger and Territory are SUV. T3 will be by and large SUV featured.[-X

Some more fuel to the fire:

http://outbacktravelaustralia.com.au/doc/ModificationLegalitiesARB.pdf


and this too **** READ SECTION 4.2.4****:

http://www.infrastructure.gov.au/roads/vehicle_regulation/bulletin/pdf/NCOP11_Section_LS_Tyres_Suspension_Steering_V2_1Jan_2011%20v3.pdf
 
Save
Reply Quote Like Like
Discussion starter · #4 ·
Save
Reply Quote Like Like
#5 ·
Hi Bruce,

Congrats on finding this doc last night, very interesting:

http://www.infrastructure.gov.au/roa..._2011%20v3.pdf

I am happy as it clarifies the issues I had regarding fitting the 265/60-18 A/T tyres whch are nominally 775.2mm in diameter.

My take on reading through the document and how it relates to our Touaregs is this:

1. Tyre load rating cannot be compromised, you cannot install a tyre with a lower load rating than shown on the placard on drivers door.

2. If the speed rating listed on the placard is greater to "S" then it must at least be an "S" (180kph).

3. The overall nominal tyre diameter must not be more than 50mm larger or 26mm smaller than that of any tyre designated by the vehicle manufacturer, in our case if my calculations are correct it is a max of 789.2mm and a min of 702mm.

4. Speedo accuracy must be maintained within ADR18 tolerances (I think it is 5%)

The only issue I see on the negative side is that:


"Note
​
​
: In NSW, although vehicles whose height has been changed up to 50mm do not require certification by an engineering signatory, the registration authority must be notified of the modification." ​

Based on what VSB14 states I now don't see any problem with fitting of the larger tyres on my vehicle.​
 
Save
Reply Quote Like Like
#6 ·
I deal with QLD DTMR alot in my work, the guys are usually over worked and under resourced, it can take up to 18 months to get a reply to a letter, IMO, mostly because they're so wrapped up in their own little world, they just haven't got the time to look outside the box, and when this is not the case, it's because they're operating to some guidelines ratified by old fogies who thinks cave living deserve another chance at solving our housing problems. As an example something as simple as changing a speed limit signs can seem like trying to launch the Titanic into space.

So good luck trying to talk any contemporary sense into these guys.

On top of all this, the minute something go pear shape, besides having to fight silly litigation, the press will be right onto them about not having absolutely failsafe standards etc.
 
1 - 6 of 6 Posts
About this Discussion
5 Replies
3 Participants
Last post:
barefoot
Club Touareg Forum
posts
784K
members
105K
Since
2003
Club Touareg Forum is a forum community dedicated to Volkswagen Touareg owners and enthusiasts. Come join the discussion about VW Touareg Sport Utility Vehicles and more!
Full Forum Listing
Explore Our Forums
General Maintenance & Repair Australia & New Zealand Brakes, Steering, Suspension, Wheels and Tires Mobile Electronics and In Car Entertainment General Touareg Discussions