When you thought that 33" was big enough

**Outlaw** · 28th January 2009, 09:26 PM

Originally Posted by outlaw

but yep 285/85-16's (35x11.5r16)

had been suggested +25 offset but that's from rangy lover Grimace so assuming a bit more to play with on a fender

Any ideas on offsets???

Originally Posted by isuzurover

I have 255/85 on disco rims with +20mm offset and 285/75 on disco rims with +30mm offset (both 33" diameter). The latter hit the rear (metal) wheel arches on articulation.

Did you need to adjust your stops on these at all?

**Michele** · 28th January 2009, 10:04 PM

285/75-16 on 7"x16 steelies (now on 8"x16)for allaround use

brand new 36" 13.00 for offroad only now on 7"x16 steelies again (d'oh!)

and no lift

some trimming is required!

**Outlaw** · 28th January 2009, 10:54 PM

Looking good Michele.. what offset are you running on the rims?

**isuzurover** · 28th January 2009, 11:09 PM

Originally Posted by Outlaw

Did you need to adjust your stops on these at all?

Nup. But I know that 275/85s on stock disco rims will rub on the radius arms.

**Michele** · 29th January 2009, 12:46 AM

Originally Posted by Outlaw

Looking good Michele.. what offset are you running on the rims?

They're old Mangels 8 spokes...I don't know the offset...I might find some numbers at home, will check it out!

**Grimace** · 29th January 2009, 08:08 AM

all this talk of plus (+) offsets is confusing me... I always thought it was negative (-)25 offset that I reccomended.

-25 brings the mounting point on the rim inwards closer to the vehicle, which puts the actual tyre further out from the vehicle right?

I reccomend 0 offset or -25 on any rover. 0 offset is good as it minimises the scrub radius and helps keep the tyres well in the guards when under flex.

I choose -25 on a range rover because that means that I have approx 6" wider (original alloys are +48 or something??) track to compensate for the 4" spring lift. This inturn helps to keep the car just that little bit more stable. Both on and offroad IMHO.

Am yet to see how much difference the total tyre scrub is with the 37 creepys, but hopefully find out soon.

**Grimace** · 29th January 2009, 08:11 AM

Originally Posted by Outlaw

Looking good Michele.. what offset are you running on the rims?

Assuming they are 7" rims I would say they would be atleast -25

**isuzurover** · 29th January 2009, 08:44 AM

Originally Posted by Grimace

all this talk of plus (+) offsets is confusing me... I always thought it was negative (-)25 offset that I reccomended.

-25 brings the mounting point on the rim inwards closer to the vehicle, which puts the actual tyre further out from the vehicle right?

I reccomend 0 offset or -25 on any rover. 0 offset is good as it minimises the scrub radius and helps keep the tyres well in the guards when under flex.

I choose -25 on a range rover because that means that I have approx 6" wider (original alloys are +48 or something??) track to compensate for the 4" spring lift. This inturn helps to keep the car just that little bit more stable. Both on and offroad IMHO.

Am yet to see how much difference the total tyre scrub is with the 37 creepys, but hopefully find out soon.

The numbers that I quoted were increases in offset over the stock disco rim specification.

**XSiV** · 29th January 2009, 04:02 PM

Maybe to stop confusion you should talk back space. This can easily be measured by laying the rim on a flat surface (outside up) and measuring from the mounting surface of the rim to the flat surface it is sitting on.

**isuzurover** · 29th January 2009, 04:42 PM

Originally Posted by XSiV

Maybe to stop confusion you should talk back space. This can easily be measured by laying the rim on a flat surface (outside up) and measuring from the mounting surface of the rim to the flat surface it is sitting on.

I know the Americans like using backspace. However backspace is rim width dependant, offset isn't.

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