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#Post#: 61--------------------------------------------------
Hillclimb tyres
By: RobT Date: July 7, 2012, 2:27 am
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Hi
Conventional wisdom suggests that Avon crossplies are the way to
go, usually supersoft A15 or A39 compound. Personally i dont get
on with them, but maybe thats because my car is too heavy at
950kg. Radials are better for me, but supersoft compounds are
scarce. Have used michelin moulded rally slick NO2 to some
success, and similar Dunlop CR311 in 'wet' X22 seems good,
although i have not personally used it.
What are your experiences?
Cheers
Rob
#Post#: 65--------------------------------------------------
Re: Hillclimb tyres
By: samfish Date: July 7, 2012, 5:30 am
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Does anyone use Circuit 'wet' tyres?
They are SUPER soft. Maybe too soft? They soon get chewed up in
the dry, but maybe not too bad on a short hill and a light car?
We have some of the excellent 15inch Dunlop wets part-worn that
could be tried....
#Post#: 70--------------------------------------------------
Re: Hillclimb tyres
By: RobT Date: July 8, 2012, 7:38 am
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I dont think wets would have enough grip, soft yes, but too
little tread on the ground. Have an email with dunlop presently
enquiring about uncut wets which might be an option....
#Post#: 300--------------------------------------------------
Re: Hillclimb tyres
By: Tonyb Date: August 18, 2012, 9:37 am
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I use Dunlop CR311 in X22 super soft compound. Works fine but
could use a softer compound on the hills. On a sprint at say
Pembrey on the second loop they are just starting to go off so
as an all round tyre pretty good.
They are also cheaper that 'proper' slicks at about half the
price (approx £500.00 a seat as opposed to £1000.00 a set!!).
That said I am told that Avon radials in a proper hill climb
compound are worth at least a second over a rally slick. I have
a set of 8j rims here ready to check this out but that will be
next year now. I'll let you know when I do!
As I under stand x22 is a wet compound, they normally cut them
in to full wets. I use them un cut as wets and they are fine as
long as there is not too much standing water. It's not unheard
of for the Golf to be the fastest car on circuit in the wet on
x22 slicks! Great feel and confidence from them.
#Post#: 653--------------------------------------------------
Re: Hillclimb tyres
By: GEL Date: January 1, 2013, 5:02 am
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Rob,
Out of interest ... what suspension `set up` did you run the
crossplies with ? , especially camber.
Thank you.
#Post#: 663--------------------------------------------------
Re: Hillclimb tyres
By: RobT Date: January 3, 2013, 2:26 am
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Used -1 to -1.5, about as much as you would want to put on a
crossply but less than a radial typically uses
#Post#: 665--------------------------------------------------
Re: Hillclimb tyres
By: GEL Date: January 3, 2013, 3:43 am
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Thanks
FYI ... many people `up here` use zero camber in order to get
them `to work`. A varied mix of small hatches through to
Caterhams etc.
#Post#: 667--------------------------------------------------
Re: Hillclimb tyres
By: RobT Date: January 3, 2013, 3:47 am
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I think that works ok on a Caterham, but hatchbacks lean a
lot.....
#Post#: 668--------------------------------------------------
Re: Hillclimb tyres
By: GEL Date: January 3, 2013, 3:52 am
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OK ... I`ll check out the set up`s next time around.
#Post#: 669--------------------------------------------------
Re: Hillclimb tyres
By: RobT Date: January 3, 2013, 4:11 am
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My ibiza used to fold over the outer edge of the tyre even with
some negative camber on. Discussed it all with paul smith at
bmtr at the time (avon guru) and only conclusion was that
radials would suit my car better. And have gone much faster on
them than on avon hillclimb crossplies. Go figure....
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