Tyre & Rims

Submitted: Monday, Aug 15, 2011 at 22:17
ThreadID: 88489 Views:4117 Replies:5 FollowUps:5
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Hey All, I'm new to here, just trying to work out wheels setups

i have a 1985 Toyota Hilux, leaf springs all round.
and it currently has 16 inch cheese cutters on it,

i thought it was weird having 16's, normally 15's
i want to get some 33 inch muddies on black 15x8 sunraysia rims,

would the offset be the same on the 85 model compared to an 03 model?
all 6 studs,

would i need to do drastic changes to my hilux to fit them and run them!, i currently have a lift kit so that shouldnt be an issue.

any help would be much appreciated!!
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Reply By: Member - nick b - Tuesday, Aug 16, 2011 at 09:50

Tuesday, Aug 16, 2011 at 09:50
Gooday Badger ; they came out with 16'' split rims same as cruiser .
should be heaps of 15 ''rims out there . unlikely to be the same as late model
I dont think you need to change any thing but you might have to have rubber flares to cover tyres BUT DONT get the guys started on the legality's on changing wheels !!!!!!!!!!
cheers nick
Cheers Nick b

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AnswerID: 462713

Reply By: splits - Tuesday, Aug 16, 2011 at 13:42

Tuesday, Aug 16, 2011 at 13:42

They did start with a 16 inch wheel as Nick said and still have them. They were split up to the 04 model. The first tyres were 7.00 x 16 then they changed somewhere around your model to a 205 x 16. I am not sure when the 15 inch started but they were always wider and intended more for street use. The last time I was out in the desert I saw two from around 2000 still using 7.00 x 16 but they were heavy cross plys.

I doubt if your rims would be the same as an 03. As a general rule when manufacturers go to an independent suspension with a drive axle in it, the back spacing gets larger. That is the distance from the inside edge of the wheel back to the centre where it contacts the hub. My 03 wheels are 115 mm while the 05 and later models are around 130. I could only guess but I would say your live axle model would be around 90 to 100. If later model wheels do fit yours, they would most likely narrow the track.

If you want to use an original Toyota wheel then you may have to go to a wrecker and measure them. If you are thinking of new ones then the company you buy them from should know exactly which one fits.
AnswerID: 462725

Follow Up By: Badger92 - Tuesday, Aug 16, 2011 at 20:55

Tuesday, Aug 16, 2011 at 20:55
G'Day, I'm looking at buying new secondhand tyres, the offset on the rims are off the 03 model. technically these would not fit my model right???

FollowupID: 736559

Follow Up By: splits - Tuesday, Aug 16, 2011 at 22:53

Tuesday, Aug 16, 2011 at 22:53
Are you talking about a 15 x 8 wheel that has the same off set as a standard 03 wheel? I think the only way you are going to find the answer is to take a few measurements then work it out with a few drawings. I have done this a few times over the years with a piece of chalk on the garage floor.

You will have to measure the back spacing of a standard original wheel and the new ones. Draw a rough looking wheel as viewed from head on and mark its centre line and the actual wheel centre where the hub touches.. Your drawing won't be to scale so simple maths will tell you how far the two points are apart or in other words the off set. Compare this to a similar drawing of your new wheel. You should be able to clearly see if the centre line of your new wheel is going to be in the same position as the original or further in or out. If it is further in then the wheel is going to narrow the track. If further out it will widen it.

You don't want the track narrowed at all but you also don't want it too wide. There is a direct relationship between the position of the wheel centre and the wheel bearings. The steering geometry also comes into it as well as a few other things.

A good basic example of this a vintage car from the 1920s when viewed from head on. The skinny wheel leans out a little at the top. A line drawn down through the king pin that the whole hub/wheel pivots on will reach the ground at the same point as the centre line of the tyre. This makes steering much easier but it also places most of the car weight on the large inner bearing and very little on the smaller outer one.

Modern cars are not exactly the same as this but they are still designed along that same principle. The registration authorities usually specify a maximum track increase of no more that 25 mm. They are not trying to make life difficult, there are sound engineering reasons for it. All you have to do is make sure the centre lines of the wheels you select do not come out any more than 12 to 13 mm more than the originals on each side.

The size of the tyres you have in mind could run you into a few legal problems but that is another discussion for another day. Before you do anything I would suggest you have a talk to the registration authorities and your insurance company if this car is going to be used on a public road.
FollowupID: 736569

Follow Up By: Badger92 - Tuesday, Aug 16, 2011 at 23:13

Tuesday, Aug 16, 2011 at 23:13
nope, i want to find out if the offset from 15x8 steel (sunraysia rims) from a 2003 hilux will be the same as 15x8 steel (sunraysia rims) for a 1985 Hilux ie. mine.
FollowupID: 736572

Follow Up By: splits - Wednesday, Aug 17, 2011 at 08:19

Wednesday, Aug 17, 2011 at 08:19
I can't answer that without measuring the wheels as I described. The 15" wheel on the current Hilux is 7" and I would assume the previous model, which includes the 03, would be the same. A 8" Sunraysia is not genuine and who knows what it has been designed to fit. It will most likely bolt on but you will have to work out where the centre will be yourself.
FollowupID: 736578

Reply By: Member - Oldbaz. NSW. - Tuesday, Aug 16, 2011 at 16:14

Tuesday, Aug 16, 2011 at 16:14
I dont believe hilux ever came with 15" rims, as said 16" splits till 04. You can bolt
15" sunraysia straight on with your choice of tyre. Still need to check the offset. Ask a
tyre dealer for the figures so you can check if buying used rims. You can expect a dud
speedo readout with 33" tyres & your fuel use will increase also. No comment on the
AnswerID: 462734

Follow Up By: splits - Tuesday, Aug 16, 2011 at 19:33

Tuesday, Aug 16, 2011 at 19:33

There is a 255/70 x 15 listed in the handbook of my 03. It carries over into the later models according to a sales brochure I have. They may have been introduced with the SR5. I suppose a dressed up version did not look all that good with split rims and commercial tyres. I can't remember when the SR5 started but I was working on them at a Toyota dealer in the early 1980s.
FollowupID: 736555

Reply By: Member -Dodger - Wednesday, Aug 17, 2011 at 15:21

Wednesday, Aug 17, 2011 at 15:21
Have a look around find someone with sunrasia rims of the model you are contemplating offer him/her a drink for letting you try their spare on your vehicle on the spot to see if it fits.
If you belong to a 4wd club then there would be a few members that could do this for you.
Otherwise go to a tyre/wheel outlet and make inquiries and maybe try one of theirs.
Legally I do not know if this size is ok.

I used to have a handle on life, but it broke.

Cheers Dodg.

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AnswerID: 462796

Reply By: snoopyone - Wednesday, Aug 17, 2011 at 17:08

Wednesday, Aug 17, 2011 at 17:08
Use this and it will show you offsets etc

AnswerID: 462801

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