A rock and a hard place...

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M

mark hh

Guest
Hi All,

Disco D1, V8 carb, manual, 3 door.

I have a dilema, to put on a 2" lift or to fit larger diameter tyres...

...budget won't allow me to do both yet.

My understanding is that a lift will give me greater axle articulation
helping to prevent loss of traction due to wheels lifting, presumbly a
greater ability to clamber over obstacles too. The downside I see is that
the COG is raised, making my otherwise unstable Disco even more so. I don't
mind the truck wallowing on the road as that means she's nice and flexible
off the road.

Tyres on the other hand offer a different set of benefits and disadvantages.
I've already gone from stock 205/75's to 235/85's, they gave me about a 2"
axle lift making the ruts and rocks easier to deal with, the downside is
that I had to do some surgery to the wings and I've no idea what my speedo
reads now! I like the idea of going even larger to 255/85.

Has anyone here any experience of the pro-comp lift or has anyone put that
size of tyre on their disco? I would like to hear your experiences before I
make my mind up.

Cheers,

Mark Holland-Hicken
C21-Design

Tel: 01480 896821
Mob: 07712 528321
Web: www.c21-design.com


 
Mark,

Check out http://www.pigletsplace.com

235/85 has put your speedo out by 8% :)

Any more questions - give me a shout, or click the forums or live chat
buttons on Piglets Place ;-)

--
Neil


 
So Neil Brownlee was, like

> 235/85 has put your speedo out by 8% :)
>

I've gone to bigger tyres on both the 90 and the Series (205 to 235/85 both
times) and I found in both cases that a check with GPS revealed that the
speedo was now spot-on (say within 1 mph at 50). I've since spoken to a
number of people who have seen the same effect. I wonder if the 8-10%
difference in gearing compensates for an 8-10% over-read built in at the
factory stage. AIUI, speedos are allowed to be out by up to 10% over (and
0% under), and I wonder if manufacturers routinely make their speedos
over-read by some amount as a matter of course. A) guaranteed to stay
within the law, even with loose manufacturing tolerances, and B) makes the
car seem a litle bit faster than it really is.

--

Rich

Nullum Gratuitum Prandium


 
On Fri, 29 Oct 2004 19:18:10 +0000 (UTC), "Richard Brookman"
<[email protected]> wrote:

>AIUI, speedos are allowed to be out by up to 10% over (and
>0% under), and I wonder if manufacturers routinely make their speedos
>over-read by some amount as a matter of course. A) guaranteed to stay
>within the law, even with loose manufacturing tolerances, and B) makes the
>car seem a litle bit faster than it really is.

I think landrover speedos are just fairly vague, especially series
ones.
On my series (2/2A/3), I have a nice mixture of bits, including bigger
wheels. My speedo (with a new cable, replaced head and new gearbox)
used to be exactly accurate according to the GPS.

6 months later, nothing has changed except my speedo cable snapped and
i put a new one on. It now reads 10-15% lower than it should.
 

>Disco D1, V8 carb, manual, 3 door.
>
>I have a dilema, to put on a 2" lift or to fit larger diameter tyres...
>
>..budget won't allow me to do both yet.
>
>My understanding is that a lift will give me greater axle articulation
>helping to prevent loss of traction due to wheels lifting, presumbly a
>greater ability to clamber over obstacles too. The downside I see is that
>the COG is raised, making my otherwise unstable Disco even more so. I don't
>mind the truck wallowing on the road as that means she's nice and flexible
>off the road.
>
>Tyres on the other hand offer a different set of benefits and disadvantages.
>I've already gone from stock 205/75's to 235/85's, they gave me about a 2"
>axle lift making the ruts and rocks easier to deal with, the downside is
>that I had to do some surgery to the wings and I've no idea what my speedo
>reads now! I like the idea of going even larger to 255/85.
>

Ironically, bigger tyres is the better option, as it is the only way
of raising the diff, which is the lowest point. But in order to fit
bigger tyres than you already have, you're gonna have to lift the
suspension to fit them underneath without ripping things out under the
wheelarches........

Alex
 
On or around Sun, 31 Oct 2004 22:28 +0000 (GMT Standard Time),
[email protected] (Niamh Holding) enlightened us thusly:

>In article <[email protected]>, [email protected] (mark
>hh) wrote:
>
>> So, as I said I can't do both...
>> ..what's the bottom line including shipping?
>
>V8, no winch & no plans for a winch? Just so I cost up the correct front
>springs.

just as a BTW, the NRC 2119 (I think, the lower of the 2 RR diesel front
springs) works a treat on the front of a V8 disco...

mind, I couldn't find an equivalently-tall back spring anywhere - ended up
with 90 HD rears, and a 1" spacer on the axle.

 

> Disco D1, V8 carb, manual, 3 door.
>
> I have a dilema, to put on a 2" lift or to fit larger diameter tyres...
>
> ..budget won't allow me to do both yet.

Very few of us can afford all the toys in one go.

Question....what are the tyres you have on right now like? How many miles
done? If lots left, you will loose a bit on changing now and I would opt for
the 2" lift. If new rubber is needed, I would go tyres first.


 
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