tyre widths

[mitchy_]

is it legal to have different width tyres?

ie, ive got 255/40R17's on the back, and 235/45R17's on the front.

both fit under the wheel arches, etc... but it has been noted down on my work order something about different sized wheels?

cheers..

[GTS-t VSPEC]

If you look here you will find out

http://www.dpi.wa.gov.au/licensing/myvehic...tions/tyre.html

Alternative road wheels are permitted under the following conditions :  

Rim width must not exceed the maximum rim width specified by the manufacturer by more than 25mm (1") (for passenger vehicles manufactured after 1st January 1973, the manufacturers rim width shall be taken as that specified on the tyre placard).  

In any event, rim width shall not exceed 177.8 mm (7") unless specified by the manufacturer as standard equipment for the vehicle in question. No increase in rim width is permitted for vehicles fitted with original equipment rims in excess of 177.8 mm (7") width.  

The wheel is contained completely within the body work of the vehicle which includes acceptable flares.  

The wheel does not foul any part of the body or suspension under all conditions of travel  

The vehicle handling is not impaired in any way.  

The tyre to rim fitment must be in accordance with the Tyre and Rim Association Manual.  

Rim diameters must be the same as specified by the manufacturer.  

The wheel must be one designed for use with the vehicle with respect to bolt pitch circle and wheel nut tapers  

The track must not be increased by more than 25mm (1") over the maximum specified by the manufacturer.etc.  

 

All wheels must be the same size, profile and bolt pattern.  

Vehicles required to comply with Australian Design Rule 24, "Tyre & Rim Selection" must continue to comply with this Design Rule (contact the Department of Transport and Regional Services for more details).  

The fitment of so called "plus one" and "plus two" and tyres is acceptable providing :  

the overall diameter of the large rims fitted with the lower profile tyres do not exceed the overall diameter  

all tyres and rims fitted to the vehicle are of the same size and profile  

with the exemption of item (f), the tyres and rims are in conformity with the requirements specified above in items (a) to (j).  

Reducing the wheel track less than the original manufacturers specification is not permitted, as this may reduce vehicle stability.  

[SL33KGTS]

I had the same on my work order.... 8.5" on the front and 9.5" on the rear.... big no no.

But on a skyline it is cool to run up to 9.5" all the way around....

Looks like you need some stockies for the day

Cheers

[mitchy_]

mmm, yay.... wrx's run a different bolt pattern to a R33 aswell dont they? cant even flog my mates

[ix9]

Funny that - they passed me with 7.5" fronts with 235/45 and 9.5" rears with 265/40/17

And they were "odd" rims back to front also

[Pulp]

Yeah! I actually rang licensing and spoke to the "Technical" guy there and he told me it was ok to have bigger on the rear compared to the front as long as the difference between them didn't exceed, I think, 10% or 20%. Might have been 20% :confused: and it had to state it on the placard that it supported those particular sizes. I have 8" on the front 235 and 9" on the rear 255.

So many different answers!! What's the actual fact??

[mitchy_]

yeah, ive got 9's and 8.5's..... might have to enquire about that, because on one yellow sticker extention they didnt mention the tyres, whereas second time round they did... (2 different pits)...

[Steve]

Check your tyre placard

[mitchy_]

tyre placard says i can have up to 17" 255's on it...

[mitchy_]

seeing as i cant see which is legal or not, and different width tyres is on ym work order...

is anyone willing to loan me a set of same size/width rims/tyres early next week, or even just a par of 235/45R17's so i can match them to the fronts?

thats basically all i have left on my work order to complete before it expires on tuesday

[APA]

dude thats wierd, i got passed with 8.5 on front and 9.5 on rears

adrian

[sexzila]

Most Supra's had back wheels biger ....

[krzysiu]

Your wheels can only be 2 inches larger and 1 inch wider. If they are larger they are not legal

So when the r33 came out stock wheels where 16inch, largest you are legally allowed to get is 18. This also goes with the Width.

[mitchy_]

yeah... ive got 17's on..

and the legalities of width is, you can have up to 7" rims on your car, unless it states larger on your tyre placard, then you may not exceed that,

so my tyre placard says 17" 255's on it, mine are that size...