Legal way to run 285s on a Defender in NSW?

[iminchin]

Hi all, new to the forum and have recently purchased a 2000 td5 110.

Im in NSW and am aware of the max 50mm height change and no more than 25mm change in wheel track.

Is there anyway i can set up to run 285/75r16s legally and still functional.

The catch is wheel track with needing to go more than 25mm offset to actually fit them in functionally
16x8 rims with 0 offset would be ideal so they don't rub and maintain turning circle, however would modify the wheel track by 66mm or can i use the wheel offset of +20 as come out on some defenders with the wolf rims as a baseline
This would let me go to about +8 offset (if i can find rims in this size for sale)

All of the engineering places i have spoken to say the lift height is no issue to certify but the wheel track change is a no go unless i could provide the documentation to prove the wheel track has not changed more than 25mm from standard.

Seems to be best case for me at the moment is to run 265/75 16 on 16x7 +25 but trying to maximize the width for the sand so wanting a bit more.

Any advice appreciated

[roverrescue]

Have you ran stock size 235 appropriately aired down on sand and struggled?
You may be looking for a solution to a problem that doesn't exist.

S

[Xtreme]

^^ x2
I run 235x85's with standard rims on a Td5 Defender and have done four Simpson crossings and my fair share of beach driving and haven't had a problem.

Diameter is more important than width - they will still give you an increased footprint when deflated and will give you less rolling resistance than a wide tyre.

[JDNSW]

I spent over a year in the Simpson on 7.50 x 16 tyres without issues (on a diesel S2a with less than half the power!)

John

[numpty]

I spent over a year in the Simpson on 7.50 x 16 tyres without issues (on a diesel S2a with less than half the power!)

John

Exactly John.

I don't understand the rationale behind huge tyres. Width is not important, it's the length of the footprint which matters.

All of my Simpson crossings have been achieved with 750/16's or 235/85/16's

[DiscoMick]

Isnt there some ADR against increasing tyre sizes by more than 15mm?

Sent from my SM-G900I using AULRO mobile app

[iminchin]

Yeah ive been through the rationales of going wider, and there are many threads about it. Its just a personal preference at the end of the day

its not what im asking really, im just wondering can you do it legally in NSW.

You commonly see it especially in VIC but that doesnt fly up here

[mick88]

Exactly John.

I don't understand the rationale behind huge tyres. Width is not important, it's the length of the footprint which matters.

All of my Simpson crossings have been achieved with 750/16's or 235/85/16's

I agree!
Tractors are a perfect example of utilising larger diameters to gain a longer footprint.




Cheers, Mick.

[iminchin]

So can you legally run 285s in NSW, its not uncommon i could probly look on the net now and find numerous defenders for sale in australia with them fitted. They are either illegal or there is a way to tick the boxes with the correct infomation

Looking for feedback on this topic not what tyre size is better thats a burnt out debate

[iminchin]

Isnt there some ADR against increasing tyre sizes by more than 15mm?

Sent from my SM-G900I using AULRO mobile app

50mm i believe or 2 inches, 285s are about 28mm larger than stock 235s. Except maybe NSW