Thread: 33x10.5x15 tyres on a IIA 88"?

The army welded on longer hanger mounts front and back . i'm not sure if they done it with the SWB's but you could get longer shackles to lift it a little .

Both military SWB and LWB had 1.5" extensions to the spring hangers and extended shackles. So overall a spring lift of about 1.5" over stock (also spacers under the bump stops).

I have 33" (285/75-16's) on my IIA (military), on disco rims with +30mm of extra offset. They just clear everything. The current setup is a MD/Sals rear and a Stage 1 front (unlocked). Haven't broken anything.

I have broken 4 rear rover (series) halfshafts on 32" tyres in various landies. That was all done with a very light right foot and stock engines. Series halfshafts aren't strong.

Have run 35x12.2 on my 2a with a guard trim and -25mm offset rims. Has sals rear and rover front. So have sheared front cwp. Don't spin the tyres . The 4.7:1 are prone to this

It'll look good with big tyres and a lift.

I've heard though that big tyres may cause a few minor problems...

1. broken axles, esp 2a. You can get high tensile axles but they're a kind of built in 'fuse', so how far back up the drive line would you rather have a weak point?

2. heavy steering, especially at low speeds. You can fit power steering to them though, made much easier if you have a Holden motor.

3. shorter wheel bearing life. Mainly because of bigger wheel off-set. Mustn't be all that common though, otherwise no Land Rovers would have big tyres.

All that said, big tyres would have to have some fuel saving benefits, as well as better grip in on and off road conditions.

And, of course, they look good. Good luck with it all.

Thanks for that info everyone. So, drifting further off topic....

How difficult is it to upgrade to a Salisbury rear diff?

What are my front diff options?

I have heard I will run into propshaft universal joint angle issues, is this true? How do I solve this?

How difficult is it to fit a LT85/LT230 to my IIA? Is this a good idea?

Originally Posted by Dauntless

Thanks for that info everyone. So, drifting further off topic....

How difficult is it to upgrade to a Salisbury rear diff?

What are my front diff options?

I have heard I will run into propshaft universal joint angle issues, is this true? How do I solve this?

How difficult is it to fit a LT85/LT230 to my IIA? Is this a good idea?

You need a series 3 Stage 1

That would make sense, though my IIA has been in the family since 1972, so it has a lot of sentimental value.

Originally Posted by Dauntless

Thanks for that info everyone. So, drifting further off topic....

How difficult is it to upgrade to a Salisbury rear diff?

What are my front diff options?

I have heard I will run into propshaft universal joint angle issues, is this true? How do I solve this?

How difficult is it to fit a LT85/LT230 to my IIA? Is this a good idea?

There are lots of different options - depends how far you want to go.

A sals will fit but will need - new spring mounts that rotate the nose of the diff up slightly and a shortened propshaft.

The front should hold up OK to 33's. SIII 109"s have stronger outer axles. A stage 1 front will bolt straight in if you can find one (but is 3.54:1 so need to swap diffs).

However - there are lots of other options like fitting upgraded axles and diff centres to your existing axle housings (e.g. Jacmac, MD, rovertracks, etc), toyota centres and custom axles to existing housings, complete toyota or nissan axles, etc...