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will these fit a defender


titan
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iv been offered a set of bfg mt 285/75/r16 will these fit a defender or will i need to cut out the arches iv been told i will need a 2" lift just need to make sure this is correct will i need to make and changes to the gearing or anything not to sure what to do or how to do it but again just to no if i take them

thanks

shane

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iv been offered a set of bfg mt 285/75/r16 will these fit a defender or will i need to cut out the arches iv been told i will need a 2" lift just need to make sure this is correct will i need to make and changes to the gearing or anything not to sure what to do or how to do it but again just to no if i take them

thanks

shane

Too wide and not tall enough

I'd wait and get some 255/85/16s

watch out for the white/red/black 90 in this vid

http://s114.photobucket.com/albums/n262/wh...rent=Movie2.flv

it had those similar size tyres on it

and even with ARBs couldbn't get up a muddy slope they pick up the mud and act like slicks

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Firstly they will fit with no mods and no lift. i ran my 110 with 33x12.50 standard and it was fine on and offroad. 285x75 is just short of 33", the 255x85 are just over 33".

Everyone has a different opinion about tyres size, tread, fitment etc. ive had this tyre problem thats why i know the sizes.

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I'd agree with the above about being too wide as i think they'll just sit on top of the mud.

One of the best tyres i had on an old 90 were "Firestone SATS" i thought they were excellent off road, abit hairy in the wet on road tho !

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Too wide and not tall enough

I'd wait and get some 255/85/16s

watch out for the white/red/black 90 in this vid

http://s114.photobucket.com/albums/n262/wh...rent=Movie2.flv

it had those similar size tyres on it

and even with ARBs couldbn't get up a muddy slope they pick up the mud and act like slicks

Obviously a MT pattern tyre wasn't suitable for that application regardless of the size. A more agressive pattern and less revs would result in a lot less damage to the gruond than was caused but spinning up on clogged MT's. :huh: I'll stick to my Insa's

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Firstly they will fit with no mods and no lift. i ran my 110 with 33x12.50 standard and it was fine on and offroad. 285x75 is just short of 33", the 255x85 are just over 33".

Everyone has a different opinion about tyres size, tread, fitment etc. ive had this tyre problem thats why i know the sizes.

Even calculating this out they is 3mm(radius) difference 255x0.85= 216.75 285x0.75=213.75 cross-sectional height is actual 216mm (same as 33" tyres) The percentage figure given is rough guide rounded to the nearest .05%.

285's on my 110 are exactly the same size as my friends 225s although I have though of going over 255's as I have experienced floatation problems which my friends 90 doesn't

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Firstly they will fit with no mods and no lift. i ran my 110 with 33x12.50 standard and it was fine on and offroad. 285x75 is just short of 33", the 255x85 are just over 33".

Everyone has a different opinion about tyres size, tread, fitment etc. ive had this tyre problem thats why i know the sizes.

Using this handy calculator: Tyre size calculator

I get the 265/75-16 to be 32.83"

and the 255/85 - 16 to be 33.07".

235/85-16 come out at 31.73" so even with 255/85-16 fitted you will achieve a 1.34" (34.036mm) increase in overall diameter. Therefore only 0.67" (17.018mm) extra ground clearance.

Just out of interest!

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OK, ground pressure....

Ground pressure is basically equal to the air pressure in the tyre. If you want lower ground pressure, reduce the air pressure. A wider tyre AT THE SAME air pressure has a shorter, wider footprint than a narrow tyre. That type of footprint does not provide as much traction.

However, a larger (wider or taller) tyre can be operated at a lower pressure safely. So, if you take a 285 and run it at its proper lowest pressure and the 255 at its lowest pressure then the 285 will do better. The problem is people not setting their tyres at the proper pressure (75 to 80% of maximum sidewall height).

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OK, ground pressure....

Ground pressure is basically equal to the air pressure in the tyre. If you want lower ground pressure, reduce the air pressure. A wider tyre AT THE SAME air pressure has a shorter, wider footprint than a narrow tyre. That type of footprint does not provide as much traction.

However, a larger (wider or taller) tyre can be operated at a lower pressure safely. So, if you take a 285 and run it at its proper lowest pressure and the 255 at its lowest pressure then the 285 will do better. The problem is people not setting their tyres at the proper pressure (75 to 80% of maximum sidewall height).

this is what i thought

but then im not that tech minded :( i fugured the 285 would be ok as i said ill see what deal i can get

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The moral of the story... If you get bigger tyres, run lower pressures.

I suggest everyone measure the sidewall height vs pressure for their own setup. 100% is at say 40 psi. A good running point is 85% of this height to start down to around 75% as a minimum. You need to do it front and rear as many vehicles weigh different front and rear.

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