Thread: two newb questions

Well thanks for all the info, at least I won't look quite as dumb when I go get some new tyres :-)

I will go for the 2" sus lift and keep the 15" rims and go for a slightly higher sidewall (245).
Am i right in saying I won't need to get it inspected as long as it's only 2"?

I have two pretty decent (60%ish) font tyres (hankook, AT's) so I will only need to get a couple of new ones for the back.

Come to think of it, the front tyres are 235's and I want 245's on the back, apart from looking a bit bigger would this have an impact on anything? safety, handing etc?
I know it seems a bit tight fisted only getting two new tyres but if I can save three or four hundered bucks for now it can be put towards my sus lift :-)


By the way this is not my daily ride so as long as it's safe & legal and will do the job I'm happy.

Originally posted by downundersteve
Well thanks for all the info, at least I won't look quite as dumb when I go get some new tyres :-)

I will go for the 2" sus lift and keep the 15" rims and go for a slightly higher sidewall (245).
Am i right in saying I won't need to get it inspected as long as it's only 2"?

I have two pretty decent (60%ish) font tyres (hankook, AT's) so I will only need to get a couple of new ones for the back.

Come to think of it, the front tyres are 235's and I want 245's on the back, apart from looking a bit bigger would this have an impact on anything? safety, handing etc?
I know it seems a bit tight fisted only getting two new tyres but if I can save three or four hundered bucks for now it can be put towards my sus lift :-)


By the way this is not my daily ride so as long as it's safe & legal and will do the job I'm happy.

Are you sure they are 15's? It's just 15's are normally an imperial size (31,32,33 etc) where as 16's are normally metric (235, 245 etc). This is not always the case, but is more common with4x4 tyres.

I would change all 4 myself, not just because you then have the same tread pattern on each corner, but then the tyres should be the same diameter on all 4 wheels for a number of reasons. One of which is looking after your centre diff.

Having said that, when quoting a metric size tyre, just cause one is 235 and one is 245 it doesn't me they are different rolling diameter, it also depends on the next number, so it could be 235/85/15 or 245/75/15. The first number is the width of the tyre, the next is the height of the sidewall as a % of the width, the third is the rim size.

Clear as mud??? :roll: :wink:

Unless I am mistaken you need to have the front and rear tyres matching in size.

I think you can even be booked if the tread pattern is differant.


I lifted my old Disco 2 inches and added some spring blocks to the rear end (1 inch) worked great for me, ran 245's all round.

I beleive the new laws they are looking at for all of Aus is a max of 2 inches in total or you need an engineer. Don't know when that will be brought in though.

Are you sure they are 15's? It's just 15's are normally an imperial size (31,32,33 etc) where as 16's are normally metric (235, 245 etc). This is not always the case, but is more common with4x4 tyres.
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Tyres are def. 235/75/15's so I am assuming they are 15" rims or they wouldn't fit. I have only seen these rims once before on an oldish defender, they are alloy with a centre cap that covers all of the wheel studs and square holes around the outside of the rim nearest the tyres.

Looks like I'd best buy new tyres all around (bigbugga) I don't want to get booked.

I guess I'll get the 2" lift sorted and when I HAVE to get those new tyres I'll get 245's.
Maybe when this new law thing comes in I might have another look at the lift options.
To be honest though the few times I've been off road the RR have has exceded expectations so any lift would just be a bonus

Can't wait to get it back from the mechanic!!

Just remember, lift of it's self doesnt do much except help approach and departure angles. You only need enough lift to fit the tyres you want to run.

You may net need a lift or only a minor one to accomodate the new tyre size.

To give you and idea, I have a total of 3 1/2 inches of lift, which is all I need to fit 35x12x15 on my rangie (1985 4 door).

The truck looks in proportion, so I don't get hasseled by the cops (it's engineered anyway), and by keeping it low(ish), it is a lot more stable off road.