RV FEATURE
BRAKES
A van ’ s braking system doesn ’ t require ratings , as such , but there are requirements to be aware of . According to the Australian Design Rules , all trailers , whether it ’ s a garden trailer or a caravan , require a braking system when over 750kg GTM . The type of braking system , however , depends on the weight of the trailer :
• Up to 750kg GTM : No trailer brakes required ;
• 751kg-2000kg : There must be a braking system fitted to the wheels of at least one axle of the trailer . Mechanical / hydraulic over-ride brakes are permitted .
• Over 2000kg GTM : Each wheel of the trailer must be braked , and the van must be fitted with a ‘ break-away ’ braking system that engages in the event that the trailer becomes disconnected from the tow vehicle . The breakaway system must be capable of applying the brakes for at least 15 minutes .
Yes , even the tyres are load-rated .
Some states ( New South Wales , for example ) require for there to be an indicator light or audible alarm inside the driver ’ s cab that shows the battery in the break-away system is sufficiently charged for its purpose .
TYRES
Yes , even tyres are load-rated . This is known as the load index . It ’ s typically a two or three-digit number found on the sidewall that corresponds to the tyre ’ s maximum load capacity .
The combined maximum load capacity of the caravan ’ s tyres must be equal to or greater than the van ’ s ATM . For example , a caravan with a 3000kg ATM on a single axle would be required to have two tyres rated to carry 1500kg each .
Tyres are also rated for speed , which is also denoted on the sidewall , along with the type of terrain the tyre is designed for ( allterrain , mud-terrain , highway , etc .).
TYRE SIZE |
SERVICE
DESCRIPTION
|
Construction type |
Section width |
Aspect ratio |
Casing construction |
Rim diameter |
Load index |
Speed rating |
AT LT |
235 |
75 |
R |
15 |
104 |
R |
50 \
Every caravanner ' s nightmare ...