I've just ordered 35" tyres. Do I need to change my gearing?

I've just ordered 35" tyres. Do I need to change my gearing on my chipped 300tdi auto?

Defender transfer case? Diffs?

What have you guys done?

it will rub out

No need of changing the gearing, they will not fit

Two interesting replies.

I'm guessing the first is an unsuccessful attempt at a pun on the word "chipped". If it is not a pun then I have absolutely no idea of what you are rambling about.

The second response suggests I've not checked the fit of the tyres first. My Disco has a four inch lift and 75mm extended arches giving the tyres a massive arch to sit in.

Don't worry 99% of 35 inch tyres are actually only 33 inch real size so you should be ok lol

auf_wiedersehen_pet said:

Two interesting replies.

I'm guessing the first is an unsuccessful attempt at a pun on the word "chipped". If it is not a pun then I have absolutely no idea of what you are rambling about.

The second response suggests I've not checked the fit of the tyres first. My Disco has a four inch lift and 75mm extended arches giving the tyres a massive arch to sit in.

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Mind reading isn't my speciality-how the **** was I to know it isn't standard ?

ESP!

you do realise that lift kits and massively oversize tyres don't actually make your dick any bigger

blue beasty said:

you do realise that lift kits and massively oversize tyres don't actually make your dick any bigger

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that's not strictly true- hang it off your knob and it will go black too

yes, lower the gearing

The simplest way is to change the transfer box for a Defender one.

Well Done Crazymac & T1G UP for giving a sensible answer

If there were more people like this on the forum, other would not be leaving!

Dave Herron said:

Well Done Crazymac & T1G UP for giving a sensible answer

If there were more people like this on the forum, other would not be leaving!

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yeah it would then be like every other Land Rover forum.......BORING

^^^^^^^ agreed, if you dont like it there's always LRO


OP a couple of guys i go laning with run 33" tyres on their discos, both lifted and a lot of panel cutting but still manage to catch/rub. one runs a defender transfer and the other a disco box but will be swapping soon, recons the gearing on the disco box is too high for laning.

I hope you have wheels with plenty of offset, you may even require spacers but dont forget piccys when theyre fitted.

Yes - anything 33" or bigger will need changes to gearing.

fanatic said:

Mind reading isn't my speciality-how the **** was I to know it isn't standard ?

ESP!

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Thx fanatic, sometimes it looks like some guys think if you deal with a landy you are kind of paranormal.

bobbler said:

I hope you have wheels with plenty of offset, you may even require spacers but dont forget piccys when theyre fitted.

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It's taken a while to dig out the pictures but here goes...



It works suprisingly well on the standard gearing but I guess the addition of a 2.8 TGV helped.

Awesome machine, those giving negative comments are just jealous

Nigel-S said:

Awesome machine, those giving negative comments are just jealous

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Thanks. It's taken ages and £££s to get to this stage.

auf_wiedersehen_pet said:

It's taken a while to dig out the pictures but here goes...



It works suprisingly well on the standard gearing but I guess the addition of a 2.8 TGV helped.

Click to expand...

Hi Rob, that is one sweet-looking Disco. I would still say however that if you haven't already done, a change of transfer box will allow your auto-box to work better.

Because the gearchange in the autobox works on hydraulic pressures calculated on std gearing/wheels & tyres, it will be working harder, especially with the 2.8 unit you have.

For the cost of picking up a Def tranny box second-hand I would deffo be giving it a try. I would go for a Def 90 box.

Comparative ratios:

Discovery 1:1.2

Def 90 1:1.4

Def 110 1:1.6

Dave

What's come to mind seeing that picture is why bother lifting and cutting a Disco to fit 35" tyres, then fit A/T pattern?