Making tyres better in the wet - any tips???

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Originally Posted by rick130

Ben, pump them up above normal dry pressures.
It makes quite a difference, it's an old racers trick ;)

I also used to lock the hubs and slip the CJ6 into 4WD when it rained. It definitely helped.

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Thanks Rick. I run them at 46 psi. They have worn evenly at that pressure, except across the nullarbor - where they wore more in the centre - despite the (500 kg - ish) load on.

big guy (or should that be guy who is compensating for something??? :D). "buy better tyres" - FYI - when I bought them they stuck like glue in ALL conditions - I couldn't fault them or get them to break traction... FAR better than any previous tyres I had bought. FAR better than the NEW Falken HTs I also had at the time (which were probably the worst tyres I have owned). The MTRs have 50-60% tread REMAINING - you must be richer than me if you could afford to throw them away. Despite what I have said, they still grip better than any cross ply I have tried (the original tyre type for a IIA). Should I install Cross Ply High Milers or Xtra-Grip Cross Plys and make matters far worse than they are now??? The half worn MTRs are still better than any cross plys I have used. Last I checked, my tyres were still legal as long as they had 1.5 mm of tread or more - mine have 8 mm or more. Please crawl back under your rock until you know WTF you are talking about.

Dave - that was certainly a scary moment - fortunately no flashbacks... (dead) Dogs don't help wheel alignment... :D

they aremud terain tyre they dont expell the water on hard roads well no matter what the brand the trick is to have a second set of tyres or learn to roll around cornners with out power locking the car into 4wd will only cause damage to the drive train

also keap an eye on your tyre presures it dose help to a certant degree
other wise their aint much you can do

Quote:

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Originally Posted by hillbilliywheelchair

<snip>
locking the car into 4wd will only cause damage to the drive train

<snip>

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It's perfectly safe in the wet as you'll get enough tyre slippage to negate transmission windup.

Older Subaru's (pre centre diff ones) used to engage 4WD when the wipers were turned on.
Pretty sure a mates Dad's then new dual range Leone would do that. (and yes, it was taken 4WDing as soon as we had licences :angel: )

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Originally Posted by isuzurover

Thanks Rick. I run them at 46 psi. They have worn evenly at that pressure, except across the nullarbor - where they wore more in the centre - despite the (500 kg - ish) load on.

big guy (or should that be guy who is compensating for something??? :D). "buy better tyres" - FYI - when I bought them they stuck like glue in ALL conditions - I couldn't fault them or get them to break traction... FAR better than any previous tyres I had bought. FAR better than the NEW Falken HTs I also had at the time (which were probably the worst tyres I have owned). The MTRs have 50-60% tread REMAINING - you must be richer than me if you could afford to throw them away. Despite what I have said, they still grip better than any cross ply I have tried (the original tyre type for a IIA). Should I install Cross Ply High Milers or Xtra-Grip Cross Plys and make matters far worse than they are now??? The half worn MTRs are still better than any cross plys I have used. Last I checked, my tyres were still legal as long as they had 1.5 mm of tread or more - mine have 8 mm or more. Please crawl back under your rock until you know WTF you are talking about.

Dave - that was certainly a scary moment - fortunately no flashbacks... (dead) Dogs don't help wheel alignment... :D

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Yep. thats me, over-compensating- thats it.


the rock I crawled out from under is now too small for me.

i will not lower myself and insult you, I will however say that
you are wrong.

going by what people on here are saying, Some say more, some say less psi.
Clearly these are just theories.
You say there is 8mm of tread left, that makes 16mm when new:cool::cool::cool:


The tyres are past their usuable and safe use. Ditch them.

Tyre technology has come a long way and yes I am sure they are much safer than the original fitment.

Yet you asked for help/advise. That is what I recommend when tyres are hard and past their safe use.

Go to a tyre shop and they will say same. Go ahead and try it.

Please refrain from any further insults, you do not know me and I did not and have not insulted you in any way what so-ever.
New tyres have no correlation to how rich one is just when tyres are stuffed, they are not safe for you and your family more also not other road users.

:):):):) Now take a deep breath and smile.

MOD HAT ON


https://www.aulro.com/afvb/

Quote:

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Originally Posted by isuzurover

Thanks Rick. I run them at 46 psi.

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I run mine at 36 psi ... This is the max psi written on the side wall casing of my tyre // What does yours say :angel:

Practical demonstration .... If you want to do a burn out ... Pump up your tyres hard as a rock, and they will light up easily :twisted:

Lower psi will give you more tread contact on the road :)


The rains have just started in Perth this week, So all the roads are greasy // Take care

Mike
:)

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Originally Posted by mike 90 RR

I run mine at 36 psi ... This is the max psi written on the side wall casing of my tyre // What does yours say :angel:

Practical demonstration .... If you want to do a burn out ... Pump up your tyres hard as a rock, and they will light up easily :twisted:

Lower psi will give you more tread contact on the road :)


The rains have just started in Perth this week, So all the roads are greasy // Take care

Mike
:)

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That doesn't mean a thing when talking wet weather performance.

Drop your pressures and you lose grip in the wet.
It doesn't matter whether it's a bias or radial tyre, they react the same way.

Pumping them up opens up the siping and grooves in the tyre (admittedly a moot point on an MT) but in my mind teh main benefit is it reduces the contact patch slightly, or at least increases contact pressure on the centre of the tyre and so works the tread blocks harder rather than the carcass and actually generates some heat in the rubber and so they grip better. The heat generated is minimal, but it works.

This isn't theory but fact.

Ask any successful/winning racer, from karts through Formula Vee, Formula Ford and all the sedan classes.
It was something I learned in karts and was advised the same by Japanese Bridgestone Motorsport engineers when assisting with tyre testing back in the mid eighties.
When racing cars we did the same thing, didn't matter whether they were open wheelers or sedans.
I've watched the unknowing drop tyre pressures at the track and then watched the knowing guys drive right around the outside of them, including me.
The only time I ever dropped pressures at the insistence of a driver as "everyone else in that class did it" (I was working as a setup engineer/mechanic, first time i'd had anything to do with that category) the car was a dog and he accused me of trying to kill him.
The next race tyre pressures were set to where I wanted them, nothing else on the car was changed and he drove through the field from last and placed, and this particular bloke absolutely hated the wet.
Of course it was driver brilliance that won the day ;)

<edit> I still can't get my head around Ben running 46psi in the IIa tyres though, 285/75's hold some air, and the IIa can't be that heavy, can it ??

What the hell's "siping" Pedro? :eek:

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Originally Posted by Pedro_The_Swift

I dont see why not,,
siping allows blocks to squirm, which should help in the wet,,

hard tyres and rain =:o

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Quote:

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Originally Posted by rick130

<edit> I still can't get my head around Ben running 46psi in the....??

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.... Sorta, right up there eh Rick ... :D

Mike
:)

Now I'm really confused! :eek::eek: (Yes, I know, doesn't take much!) :D

Can someone please enlighten me as to whether they should be pumped up, kept the same or let down some? :eek:

And how many people (just interested ...) put their Landy in 4WD on the bitumen? I don't because I thought you got too much wind up in the drive train. Opinions? :)

Quote:

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Originally Posted by rick130

Ben, pump them up above normal dry pressures.
It makes quite a difference, it's an old racers trick ;)

I also used to lock the hubs and slip the CJ6 into 4WD when it rained. It definitely helped.

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Quote:

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Originally Posted by mike 90 RR

Let some air out of the tyres ... Takes the roundness off the "contact surface" of the road

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Quote:

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Originally Posted by B92 8NW

Keep the pressures the same. It won't make any difference as nothing will have changed:D:D

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Quote:

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Originally Posted by hillbilliywheelchair

they aremud terain tyre they dont expell the water on hard roads well no matter what the brand the trick is to have a second set of tyres or learn to roll around cornners with out power locking the car into 4wd will only cause damage to the drive train

also keap an eye on your tyre presures it dose help to a certant degree
other wise their aint much you can do

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