NS Dev
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| posted on 20/2/07 at 08:24 AM |
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quote:
Originally posted by Jasper
Thought I might have stirred one up here......
So answer me this one then, I followed a CSi Caterham around damp alpine roads for a week and it ran 245 rears (Avon CR500) and never missed a beat,
it looked absolutely planted. The only time it got loose was a last minute complete lock-up headed into a hairpin (luckily there was an open gate and
a filed  )
I was originally gonna fit the same tyres on mine (similar power/weight) but I thought I'd go a size down....
The Avon CR500 is a specifically designed tyre.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Simon
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| posted on 20/2/07 at 08:35 PM |
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Chris,
While I don't don't the math, surely with a lower profile a lower pressure could be used, so how would that affect footprint?
ATB
Simon
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Simon
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| posted on 20/2/07 at 11:38 PM |
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Bling
For a hundred quid, I'd have used 10" minilights
I got 17" though
I reckon my car is heavier than quite a lot of others.
ATB
Simon
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C10CoryM
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| posted on 21/2/07 at 12:51 AM |
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Im not sure I get where the idea that a tire can be too wide in the dry comes from.
If we are talking racing compounds, the wider tire runs cooler, allows you to run a softer compound, and increases contact patch (when I measured
this a 3" wider tire gained 6.2 square inches). Also if you lower the pressure (which you can and usually should) it will increase the contact
patch further.
If you run the same compound and go to a wider tire then yes, your stiction would be reduced, but why would you do that?
If you have the correct rims to match the wider tires you will not get any poor wear once you are dialed in. Far as I am concerned until it gets too
heavy, there is no such thing as too wide of a tire in the dry. If you aren't getting the heat into it, GREAT! Then run a softer compound,
but don't run skinnier tires.
The lousy thing about tire theory, is even if you know all the logic (I don't), you still do not have anything to go on unless you can convinve
the tire company to release their specs to you. Good luck with that  .
Cheers.
"Our watchword evermore shall be: The Maple Leaf Forever!"
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G3OFF
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| posted on 21/2/07 at 04:23 PM |
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i totaly agree C10CoryM
i have run both 235 and 265 on my car and the 265 were a massive improvement, but i only use my car in summer.. and we aint talkin cheap tyres in
either size.. all i can say .. is dont knock it till u tried it...
no such thing as to much power......
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