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post #1 of 11 (permalink) Old 03-05-02, 04:45 AM Thread Starter
Cookie Boy
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Join Date: Mar 2002
Location: Staffordshire UK
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Question Tyre Question

I'll start the ball rolling with a question blagged from another forum.

With a 1 inch lift, what is the largest tyre that can be fitted?

I reckon it’s between a rock and a hard place as the 1 inch lift does not give any more real space without cutting the rear arch than standard so 225*75R16.

But I stand to be corrected……

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post #2 of 11 (permalink) Old 03-05-02, 12:59 PM
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My Disco has a 1" lift on it and I have 235/75/15 tyres on it now, but these are looking a wee bit small with the lift kit.

I was looking at other sizes and let me have a look at 265/70/15 Goodyear Wrangler AT's, which when parked alongside the disco, were only 0.5 inch taller but much better width.

I know these need to be on a wheel and inflated before you get a real idea of the correct size but it's gave me an idea of the size.

On my old Rangie (see pic's in other post) I had a 2" lift with 31x10.5x15 tyres, I had to fold the lip of the wheel-arch double but nothing else. :s6
post #3 of 11 (permalink) Old 03-05-02, 04:46 PM
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Having just gone down this track...

The best info I've found on tyre sizes is on the DiscoWeb (www.discoweb.org).

I have OME suspension which (in theory) gives about 40mm lift. The next step is a 1" body lift which I just can't be bothered doing at this stage.

The tyres I fitted were 245/75R16 these are 31" diam as apposed to the 29.5" standard 235/70R16. The issue is the back of the rear guards which will catch on any upward axle articulation. To rectify this I got out my dremel and a cutting disc, masked off the offending area and proceeded to cut it off. This was about 1" in at the bottom and tappering up about 4" along the guard.

Anything larger than 31" will require more work on the body. Of course a body lift will help.
post #4 of 11 (permalink) Old 03-06-02, 12:46 AM
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Here's the before after pi's of the rear wheel.
post #5 of 11 (permalink) Old 03-06-02, 12:47 AM
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Here's the before/after pic's
Attached Images
File Type: jpg rearwheel.jpg (22.9 KB, 93 views)
post #6 of 11 (permalink) Old 03-06-02, 06:51 PM
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To DM300

Have looked at the OME kits. Would you mind replying with the part numbers or other ID for the front and back shocks. ie: Are the front and back both medium?
post #7 of 11 (permalink) Old 03-06-02, 07:11 PM
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Hi DM300,

When you trimmed the rear arches, did you reform the lip on the inside or did you strenghten them in some other way?

Only asking incase I have to do mine in the near future. :s6:
post #8 of 11 (permalink) Old 03-07-02, 02:05 PM
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The OME springs for the Tdi front only come in one size, from memory this is the same as the heavy front for the V8. The rear are available in standard, medium and heavy. I've got medium which is still a progressive spring, the heavy is linear. It is also possible (in theory) to fit the Defender springs to the front and match with the heavy rear for more lift, although this may have other problems and would give a very heavy ride. As for part numbers I can't remember what they were. The shocks are OME nitro-chargers and from memory they're heavy duty for the Tdi.

I'll see if I can find the part numbers and post them if I do.

I have had the whole front replaced by ARB after about 20,000km. The reason for this was that it had dropped by about 5-10mm after I installed an ARB winch bar, dual batteries and a 9000lb winch. The fact that this added over 120kg to the front of the car is part of the reason, the other was a problem (ARBdidn't say exactly what) with the original springs/shocks and ARB was not happy with this. I've since had the replacements for about 10,000km and no problems. I should point out I do about 60-70% of driving off road so the suspension is really worked over.

As for the rear arches... No I didn't reform the lip. Yes, there is a slight flex in the bottom rear panel now when you hold it and try to move it, but it is not significant.

It would have been better to roll the edge but I felt that I was less likely to stuff things up leaving it like this (I'm a computer specialist not a metal worker!). I did initially cut some of the original lip off to see how the dremel cut and also to see what effect no lip would have.
post #9 of 11 (permalink) Old 03-07-02, 02:47 PM
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Thanks for the info
post #10 of 11 (permalink) Old 03-07-02, 04:06 PM
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DM300, did you have your upgrade done at the top end, cause down at the bottom they can't quote for fitting, as it's another workshop. I will have to keep your pics, as I will be looking for bigger tyres after I get my suspension upgraded.

How much difference(handling) has the change made to your disco?
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