The 2 most important rules for NSW are these...
1. the rolling diameter for the entire wheel/tyre combination mustn't increase by more than 15mm over the largest optional wheel/tyre combination available for your specific model (CXi, GLi etc.).
2. the width of the rim must not increase by more than 1 inch/26mm over the largest optional wheel/tyre combination available for your model.
The rest of the regulations can be found HERE on the RTA website. Download VSI 9 and read the section on alternate wheels and tyres.
To help anyone who is mathematically challenged (like me), HERE is a JAVA calculator which lets you compare the specs of the wheels you have against the wheels you want (just put in the relevant sizes) and it will also give you an estimate of how much your speedo will be out by with the new wheel specs.
PS: To answer the original question, on an EK1, 17s will be illegal unless they are 6.5 inches wide (I'm guessing most will be at least 7 inches wide) since the stock wheels are only 5.5 inches wide...
Reply With Quote
Bookmarks