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285/75 16 on D22?

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RubbaBurna69

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Hey guys,

Would a set of 285/75 16 all terrains fit a d22 with a 40mm lift? Is much guard work necessary?

Cheers
 

grumpy too

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Be interested too but pretty sure will be ok, need to bring the speedo in line with the gps at present 5kph out.
I won't be going to 285 though for my type of driving and would even prefer narrower tyres.
Not sure how you go legally changing tyres but probably ok with the 75 although know with the Isuzu NPS300 raising the diameter more drastically meant changes to the brakes but ok if not pinged by police or insurance in case of bingle, could also be a problem in NSW with a pedantic roadworthy tester.
 

gazza414

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I run them on mine--have done since 2012..no probs with rego or anything

has a 3" Calmini lift kit
 

KevinE

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Hi Gaza, just curious; wondering what salt lake you did your 217MPH on? Only asking as we just got back off a trip that involved a look at Lake Gairdner. Have previously driven on Island Lagoon (legally) & have had a peek at Lake Eyre a few times.
 

gazza414

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Hi Gaza, just curious; wondering what salt lake you did your 217MPH on? Only asking as we just got back off a trip that involved a look at Lake Gairdner. Have previously driven on Island Lagoon (legally) & have had a peek at Lake Eyre a few times.
Lake Gairdner
 

Horatius

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Not sure where you're at so this might not be relevant. But something worth considering is that in NSW for instance (not sure if it's a national reg yet) you can't go more than 7% over the diameter listed on the tyre placard. For a D22 that means you can't go over 7% of the diameter of a 265/70/r16. Unless you could somehow get engineer approval and go through the rigmarole, as a 285/75/r16 will be outside the regs.

You're unlikely to get stopped or defected for it though, so no problems that way. It could be a big problem if you rear end a Rolls Royce though.
 

Horatius

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Again it might not be relevant, but it looks like it will be for NSW people. It's in item 13 in this link.


265/70/r16 diameter = 777.4 mm
1% = 7.774 mm therefore 7% = 54.418 mm
Largest allowable size = 831. 818 mm

The diameter of a 285/75/r16 = 833.9 mm. Which would be an increase of roughly 7.25%

Modification

Replacement of tyres that change tyre overall diameter by more than 7% of the overall original diameter*.
* ’overall original diameter’ means the maximum outside diameter of the largest tyre specified by the vehicle’s original manufacturer as an option for the vehicle, as shown on the vehicle’s tyre placard.

Example requiring certification:

• Replacing 215/65R17 (712 mm overall diameter) tyres with 265/65R17 (776 mm overall diameter) tyres, an increase in overall diameter of 64 mm, or 8%.

Example not requiring certification:

• Replacing 215/65R17 (712 mm overall diameter) tyres with 235/65R17 (738 mm overall diameter) tyres, an increase in overall diameter of 26 mm, or 4%.

Tip: To determine if the tyres you have selected require certification you need to look at the tyre placard fitted to the vehicle by the manufacturer. Sometimes the tyre placard will show more than one tyre size, allowing optional tyres of that size to be fitted. If one of the tyre sizes marked on the placard (eg 215/65R17) matches the marking on the tyre sidewalls, certification is not required.
 
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ben85

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285s will be touch and go with a 40mm suspension lift.

might need to trim a bit out of the front guard.

the rear flare toward the cab area may also need a trim.

if your not driving 4x4 tracks you may get away without it, when the suspension flex's and turning is when you will have most problems.

+20 offset rims will help. go 0 offset if you want a wider wheel track and don't mind trimming.
 

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