fitting 33" or 285/75/16 tyres to 90 series?

[glen_ep Addicted PP Member Find all posts View Profile Close glen_ep]

Re: fitting 33" or 285/75/16 tyres to 90 series?

Also, keep in mind that the actual dimension of a tire will also depend on the manufacturer and model.
Eg, Some 265/75R16's are only 800mm, or 805mm - whilst the tallest I could find is the Mickey Thompson MTZ', at 813mm.

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

The common sizes are:

265/70R16 - 777.2mm - Original.
265/75R16 - 803.6mm - Best size with 2" lift. No other mods required.
285/75R16 - 833.8mm - Requires body seam/flare/mudflap modifications of the front wheel arches (at the mudflap). Also a body lift or custom suspension beyond 2" to prevent rubbing and catching of flares.

Uncommon sizes (hard to purchase when out bush!):

255/75R16 - 788.7mm - Smaller than a 256/75, so why bother?
255/85R16 - 839.7mm - Expect the same mod requirements as the 285/75R16 - but with less width, the rubbing should not be as bad. I haven't seen one with this size, yet...

This is very helpful for newbies so thank you just joined today as i have just purchesed my 98 prado and need advice as these are a little different to modify than 10sec japanese cars that i'm used too. :shock:

Can someone please explain a few things for me? i'd love 285/75 R16 on my 90! it has a 2" OME lift with stock rims and it's a GXL how exactly do i do this (285/75R16 - 833.8mm - Requires body seam/flare/mudflap modifications of the front wheel arches at the mudflap )

will i also need differnt rims?


any help would be much apprerciated!

[glen_ep Addicted PP Member Find all posts View Profile Close glen_ep]

Re: fitting 33" or 285/75/16 tyres to 90 series?

G'day and welcome to the forum.

265/75R16 is the most common upgrade for a reason - it's easy.

Not many people have gone larger, and of those who have, they've all been done differently. This means we can't explain exactly how to do it, as there's no "set way" to go bigger. The most persistant issue to overcome is the front tire rubbing on the front mudflap region (when turning). Search the forum for users taresk, jcas24, g.t., beast2h, KZJ90 for ideas on how to overcome this.

[Taresk Member Find all posts View Profile Close Taresk]

Re: fitting 33" or 285/75/16 tyres to 90 series?

This is very helpful for newbies so thank you just joined today as i have just purchesed my 98 prado and need advice as these are a little different to modify than 10sec japanese cars that i'm used too. :shock:

Can someone please explain a few things for me? i'd love 285/75 R16 on my 90! it has a 2" OME lift with stock rims and it's a GXL how exactly do i do this (285/75R16 - 833.8mm - Requires body seam/flare/mudflap modifications of the front wheel arches at the mudflap )

will i also need differnt rims?


any help would be much apprerciated!

At the rear of the front wheel arches is where we refer to with these mods, removing the front mud flap, trimming the plastic liner that covers the inside of the wheel well: behind which you'll find a body seam protruding this is the part we grind back but only the bare minimum amount required, don't grind into the tack welds or you risk screwing up the body integrity.

This mod is best done when you have the big tyres fitted, sway bar off, and you're close to a place where you can reach maximum wheel travel while turning the steering, as every car is different you should do a tiny bit at a time, testing for contact as you go to avoid removing more than necessary.

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

all excellent information! exactly what i was looking for! looks like thats the size ill go because easy is always the best option that hits the hip pocket the least and it's going to be a beach buggy anyways! Maybe ill go bigger later on down the track ill just try these and see how i go
Cheers again!

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

SOOOOO was thinking my mate has a hilux with 15" rims and 32X11.5 mud tyres and was wondering would i have to do the body seam mods or will they fit easily like the 265/75 R16's?

what is best on these cars 15" or 16" rims i would say 15" but hey what would i no?? ops:

my real question i suppose is waht would be better? 265/75 R16 or 32X11.5 R15?

Thanks again for the knowledge and patience

[glen_ep Addicted PP Member Find all posts View Profile Close glen_ep]

Re: fitting 33" or 285/75/16 tyres to 90 series?

I wouldn't think the 15's will fit due to brake calipers

[Taresk Member Find all posts View Profile Close Taresk]

Re: fitting 33" or 285/75/16 tyres to 90 series?

Yeah, you'd have to grind the calipers, I had a nice set of 15x10 rockcrawler rims with 33" Maxxis Mudzillas off my last car that I was set on fitting to the Prado when I first got it, they went on, with a struggle, but wouldn't turn, they were wedged tight against the calipers.

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

Ah fair enough thanks again fells looks like 16's are the way to go!
black sunnies and 285's for me!
anyone no offhand what offset i need?

[g.t Junior Member Find all posts View Profile Close g.t]

Re: fitting 33" or 285/75/16 tyres to 90 series?

Ah fair enough thanks again fells looks like 16's are the way to go!
black sunnies and 285's for me!
anyone no offhand what offset i need?

Im running black sunnies in 16x8 -13
Keep in mind the lower offset you go, means the closer the inside front tyre will be to the back of the front gaurd when you turn (the bit you shave a bit off), hard to explain but when you see it you will know.
If you want something more aggressive i cant see why -22 wouldnt fit with a bit more massaging of the front seam.
stock offset is +15 or something (lame) :P

[glen_ep Addicted PP Member Find all posts View Profile Close glen_ep]

Re: fitting 33" or 285/75/16 tyres to 90 series?

I've read that original RV's are +30, and the original alloys are +15.
Zero offset rims are reasonablly easy to come by.
Anything wider (negative) would be great for stability, but watch the guards and consider your local laws.

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

i've also heard of -25! wide is good for me as sand is going to be the aim of the game! hence 285's i'd try 305's if i could!
local laws eh? so in nsw i'm guessing -25 is illigal?!?! :P

thanks for the info i didn't no the lower the number the wider. cheers

[Derb Senior Member Find all posts View Profile Close Derb]

Re: fitting 33" or 285/75/16 tyres to 90 series?

Hi Fellas. With regards to the front tyres rubbing on the mud flaps during turning (after fitting huge tyres), most web-sites I have trolled through suggest increasing the caster angle. This is achieved by swinging the lower control arm forward via wheel alignment. I have no idea what this does to your steering loading during normal road work or parking. Other members may have been up this road before and could comment. Cheers, Derb.

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

Ah fair enough thanks again fells looks like 16's are the way to go!
black sunnies and 285's for me!
anyone no offhand what offset i need?

Im running black sunnies in 16x8 -13
Keep in mind the lower offset you go, means the closer the inside front tyre will be to the back of the front gaurd when you turn (the bit you shave a bit off), hard to explain but when you see it you will know.
If you want something more aggressive i cant see why -22 wouldnt fit with a bit more massaging of the front seam.
stock offset is +15 or something (lame) :P

a zero offset would be ok because close enough means cops wouldn't pick it up?
how are people getting away with -13 or -25 offset and not being pulled all the time?! also how are they not petruding outside the wheel arches!
i never thought simply putting on bigger tyres was so hard and confusing and so much knowledge needed!

[clubbywagon Junior Member Find all posts View Profile Close clubbywagon]

Re: fitting 33" or 285/75/16 tyres to 90 series?

im thinking this can be done a lot easier
can people who have 285 tyres or bigger just list rims tyre sizes they have installed then ill just chose the closest and easyest one and do that and stop wasting peoples time ops: :P
thanks for all the info and help fellas