Thread: Tyres again... 255/85R16 on a defender 90?

If you're going 255-85 I'd suggest getting Ozzy Tyres to get the Toyo Open Country MT in for you...

Originally Posted by Tombie

How do you figure they'd run with stock springs and not 2" springs?

(This is a loaded question btw)

Just on full flex, they would stuff into the arches. They are an unassumingly big tyre. I run 2" and never had a rub on full flex even when dislocating springs.

G

Originally Posted by Sirocco

Just on full flex, they would stuff into the arches. They are an unassumingly big tyre. I run 2" and never had a rub on full flex even when dislocating springs.



G

A 2" (or any other) lift doesn't change range of motion... Only static ride height.

They will both stuff to the same point (the bump stop)

Originally Posted by Tombie

A 2" (or any other) lift doesn't change range of motion... Only static ride height.

They will both stuff to the same point (the bump stop)

If you run the same bump stops then you do have more motion. A lift physically increases the distance between axle and chassis.

I understand what your saying about the stopping point though. The limiting factor being the bump stops. The lift would allow more movement/flex on the opposite wheel before the bump stop contacted the other side. With lift comes extended shocks.

As an exaggerated example, imagine running 35s on a -2" Spring (assuming they would fit), there wouldn't be much movement!

G

Originally Posted by Sirocco

In terms of stability I doubt you would notice any difference. A wider tyre isn't more effective in sand as when you air down the footprint elongates, not widens. 255-285 is only 3cm. Not worth worrying about, not a deciding factor.

Glad you mentioned that. Many people think wider tyres are better.

Originally Posted by Sirocco

If you run the same bump stops then you do have more motion. A lift physically increases the distance between axle and chassis.

I understand what your saying about the stopping point though. The limiting factor being the bump stops. The lift would allow more movement/flex on the opposite wheel before the bump stop contacted the other side. With lift comes extended shocks.

As an exaggerated example, imagine running 35s on a -2" Spring (assuming they would fit), there wouldn't be much movement!

G

Incorrect - you're confusing it with Up/Down travel ratios.

Static ride height - height vehicle sits at normally
Range of motion - the arc through which the suspension can travel

A stock height vehicle that can cycle a tyre its entire R.O.M will be no worse than a vehicle that sits 2" higher Static but has the same R.O.M
The 2" higher will compress a further 2" from static but tyre will still end up at same point.
A -2" starting point will still compress to the same point also, it will have more droop though from its static height.

If a tyre doesn't fit stock, then it doesn't fit with a lift (unless - all bump stops etc have been changed to alter range of motion)

This also applies to vehicles like D3/D4 where larger tyres are fitted, in their case a suspension air failure can result in the vehicle sitting on guards & tyres before hitting bump stops. Imagine a major failure at speed dropping a tyre into a guard at 110km/h....

They never consider that scenario....

Originally Posted by Tombie

If you're going 255-85 I'd suggest getting Ozzy Tyres to get the Toyo Open Country MT in for you...

I'd be pretty keen to at least price a set of these, but according to an email I had back from Toyo Australia on Friday, they don't bring 255/85 into the country and never have. Interestingly, there are a couple of Australian online tyre retailers who list them as "Sold Out". Maybe parallel imports? Is that what Ozzy Tyres do?

Originally Posted by eeyore

I'd be pretty keen to at least price a set of these, but according to an email I had back from Toyo Australia on Friday, they don't bring 255/85 into the country and never have. Interestingly, there are a couple of Australian online tyre retailers who list them as "Sold Out". Maybe parallel imports? Is that what Ozzy Tyres do?

Ozzy tyres will order and provide full warranty.
They do as you have noted.

The Tyre is worth every cent!