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Old 10-13-2011, 03:44 PM   #1
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Default Is it true that harder front foam compound than rear will give better steering ???

Hey all, these weekend i was having a very interesting topic with this fellow and subject was how can you get the most possible steering.

On my Lab C801 i am running a one step softer shore upfront to get more steering, but my fronts are wearing to much comapared to the rears. I don't want to go a step up shore as i don't wont to loose the steering i have BUT this person was explaing to me that actually steering will get better since the side wall of a harder tire will be harder and get more grip than the other tyres i had as he was explaing that softer compound suffer from a very soft sidewall and will flex whilst steering hard.

Whats your idea about this?
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Old 10-13-2011, 04:11 PM   #2
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That MIGHT be true if you are running very large tires. Even then I doubt it though.
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Old 10-13-2011, 04:14 PM   #3
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I read the same thing in XXX Main. It says use a harder front tire to you get more lateral grip. But everyone at the track runs a softer tire up front. I've been running softer tires up front since that what everyone has recommended but this has always confused me.
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Old 10-13-2011, 05:10 PM   #4
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A softer front will give more steering, a tire's sidewall has to flex in order to create grip.
You can always go too soft but you will have to run something like 20 shore in order to achieve that.
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Old 10-13-2011, 05:18 PM   #5
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Also need to take into consideration all the dampening and suspension settings. All these will effect the tire shore and grip as well.
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Old 10-13-2011, 05:27 PM   #6
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I've always used a softer tire up front just to keep even tire wear. But I do believe harder tires are faster.

Pass you soon
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Old 10-13-2011, 06:06 PM   #7
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Quote:
Originally Posted by lil-bump View Post
I've always used a softer tire up front just to keep even tire wear. But I do believe harder tires are faster.

Pass you soon
Sometimes they definitely are.
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Old 10-13-2011, 08:41 PM   #8
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If only one manufacturer could make an 8scale front tire like the electric foam Cyan tires of old: 45shore edge with 35shore inside....
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Old 10-13-2011, 10:31 PM   #9
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Quote:
Originally Posted by bertrandsv87 View Post
If only one manufacturer could make an 8scale front tire like the electric foam Cyan tires of old: 45shore edge with 35shore inside....
Matrix makes a dual compound front tire, but not like the electric tires.

They have a 40 shore compound on the inside and a small ring of 32 shore on the outside.
It's called Bi Mescola..
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Old 10-14-2011, 05:02 AM   #10
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The harder the tyre the larger slip angle have to apply, otherwise it's understeer much esp 1/8 has turning ability at real end.
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Old 10-15-2011, 04:16 AM   #11
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I dont think so.

More understeering.
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Old 10-15-2011, 07:24 AM   #12
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I dont think so.

More understeering.
AGREED
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Old 10-15-2011, 08:39 AM   #13
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harder tires in the front I've found give you less turn in but great drive off and depending on the track that could be faster.
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Old 10-15-2011, 02:30 PM   #14
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Quote:
Originally Posted by DS Motorsport View Post
A softer front will give more steering, a tire's sidewall has to flex in order to create grip.
You can always go too soft but you will have to run something like 20 shore in order to achieve that.
One very good concept of tyre shore was given to me by SPracer, have to think of it like tyre pressure as much as rubber compound. The softer the shore the more the side walls will move as DS stated

Too soft and too much diameter and you will chunk the tyres and then it's bad news for steering.
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Old 10-15-2011, 11:36 PM   #15
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Depending the surface......

You can go to soft with a tire causing less grip......
Also on dusty surfaces a softer tire can pick up the dust loosing grip while a harder tire does not pickup the dust.
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