What tyres for legal rolling diameter?

[daNc]

Hey guys im looking at getting my wheels soon, the ones in the link below, im just wanting to know what i need to keep it legal i dont know if i want 19 inch or 18 yet, but the rules arent actually 2 inches above stock right? its rolling diameter? i dont understand rolling diameter so what kind of tyres would i need please? and does anyone know what PDW wheels are like? i really like the look of them.
I dont know when ill be lowering it but all i know is i dont want to be scraping on every speed hump and steep driveways, would FE2 height be best for that?
Also im looking at getting some of them DBA 4000 slotted rotors and new pads soon, would it be a good idea to get them first or does it make no difference
Cheers

PDW - Wheels - Bob Jane T-Marts

[monkeys437]

Check out this tyre size calculator it works out rolling diameter for you and should answer all your questions and let you check a bunch of tyre/rim combinations and compare them to standard.
I think legal size is 2 inches (50.8mm) rolling diameter above standard but check vic roads website to make sure

Tire Size Calculator - tire & wheel plus sizing

[daNc]

Check out this tyre size calculator it works out rolling diameter for you and should answer all your questions and let you check a bunch of tyre/rim combinations and compare them to standard.
I think legal size is 2 inches (50.8mm) rolling diameter above standard but check vic roads website to make sure

Tire Size Calculator - tire & wheel plus sizing

Ok thanks, altho i dont know what to put in the calculator? do i put in whats on the tyre placard? altho there are 3 different sizes on that

[thewheeldeal com au]

Legally you can only increase rolling diameter by 15mm.

I'll make it easy for you though:

VX Commodore
17" - 235/45R17
18" - 235/40R18
19" - 245/35R19
20" - 245/30R20 (or 225/35R20)

BTW - we are PDW suppliers so anything you need please let us know.

[daNc]

Legally you can only increase rolling diameter by 15mm.

I'll make it easy for you though:

VX Commodore
17" - 235/45R17
18" - 235/40R18
19" - 245/35R19
20" - 245/30R20 (or 225/35R20)

BTW - we are PDW suppliers so anything you need please let us know.

ok thankyou very much, might get in touch with you in the next week or 2 and see what you can do for me