Different tyre pressures on toyo/kumho/yoko??

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Expand view Topic review: Different tyre pressures on toyo/kumho/yoko??

Re: Different tyre pressures on toyo/kumho/yoko??

by HenryJS » Thu Mar 07, 2019 8:56 am

autobackup wrote: Wed Mar 06, 2019 7:06 pm

They are primarily designed for use on much heavier cars - e.g. they are used in the Porsche Cup.
This is why P Zero doesnt work on an Atom :tu:

Re: Different tyre pressures on toyo/kumho/yoko??

by autobackup » Wed Mar 06, 2019 7:06 pm

PaulF

The Pirelli P Zero Troffeo R minimum width for front tyres that would fit an Atom 15" rims is 205mm rather than the 195mm specified size - these would probably fit on the rims but might be very tight fit under the mudguards - they make a suitable 225 for 16" rear wheels.

You can find the previous discussion thread in the forum here : http://ariel.club/forum/viewtopic.php?f ... fc#p289105

However others, both in this forum and outside, have advised me that the sidewalls might be too stiff for an Atom to get much heat into them as it is such a light car and, while probably not bad for road use(?) might not work too well on a track - added to which they also b****y expensive!

They are primarily designed for use on much heavier cars - e.g. they are used in the Porsche Cup.

Re: Different tyre pressures on toyo/kumho/yoko??

by speedmachine » Wed Mar 06, 2019 7:02 pm

PaulF wrote: Wed Mar 06, 2019 3:27 pm Has anyone tried out other tyres? I was thinking of the likes of Pirelli P Zero Trofeo R or Michelin Pilot Sport Cup 2.
I don’t but I think it is very likely that the sidewall is too soft.

Re: Different tyre pressures on toyo/kumho/yoko??

by PaulF » Wed Mar 06, 2019 3:27 pm

Has anyone tried out other tyres? I was thinking of the likes of Pirelli P Zero Trofeo R or Michelin Pilot Sport Cup 2.

Re: Different tyre pressures on toyo/kumho/yoko??

by Nick C » Wed Mar 06, 2019 2:40 pm

John Scherrer wrote: Tue Mar 05, 2019 8:35 pm Hi Nick

Yours are height adjustable too !

The process involves adjusting the brake cylinder pushrod nuts to move the brake pedal to the correct height for you.
thanks John :tu:

Re: Different tyre pressures on toyo/kumho/yoko??

by Sir Nick » Wed Mar 06, 2019 1:05 pm

In order for me to get a comfortable T&H I put spacers behind the throttle peddle to raise it, plus I turned the throttle peddle 180° and shifted it to the right to stop me catching the throttle when braking hard! 😱

Re: Different tyre pressures on toyo/kumho/yoko??

by Nick C » Wed Mar 06, 2019 12:09 pm

HenryJS wrote: Wed Mar 06, 2019 8:40 am Nick,

The brake pedal should be a fair bit 'higher' in the travel than the throttle. so should be fairly level when applying a medium - firm brake pressure.

Whats happening in your car?
Hi...
its nothing serious.. just that when applying the brake my "heel" (side of foot) is catching the side of the throttle..so not making proper contact.
I think, perhaps the brake pedal just needs to be a bit higher. I was unsure if it could be moved or not

Re: Different tyre pressures on toyo/kumho/yoko??

by Nick C » Wed Mar 06, 2019 12:09 pm

HenryJS wrote: Wed Mar 06, 2019 8:40 am Nick,

The brake pedal should be a fair bit 'higher' in the travel than the throttle. so should be fairly level when applying a medium - firm brake pressure.

Whats happening in your car?
Hi...
its nothing serious.. just that when applying the brake my "heel" (side of foot) is catching the side of the throttle..so not making proper contact.
I think, perhaps the brake pedal just needs to be a bit higher. I was unsure if it could be moved or not

Re: Different tyre pressures on toyo/kumho/yoko??

by Nick C » Wed Mar 06, 2019 11:54 am

HenryJS wrote: Wed Mar 06, 2019 8:40 am Nick,

The brake pedal should be a fair bit 'higher' in the travel than the throttle. so should be fairly level when applying a medium - firm brake pressure.

Whats happening in your car?
Hi...
its nothing serious.. just that when applying the brake my "heel" (side of foot) is catching the side of the throttle..so not making proper contact.
I think, perhaps the brake pedal just needs to be a bit higher. I was unsure if it could be moved or not

Re: Different tyre pressures on toyo/kumho/yoko??

by Toilet Duck » Wed Mar 06, 2019 9:46 am

Nick C wrote: Tue Mar 05, 2019 3:57 pm Hi Toilet Duck..
nice driving there.
your car looks very well set up. not much movement at all...

can I ask what pedal box you are using? I have tried, but just cant heel & toe, due to the pedals being at differing heights... are they adjustable ones ?
Hi Nick,

Looks like you've already got the replies you need but yes, I'm using the standard Atom 3 pedal box which is adjustable. I had to fiddle with the brake pedal to raise it higher than the accelerator to a point I was happy with. I have it set so that when I'm hard on the brake pedal it's pretty much in-line with the accelerator pedal.

Cheers :vroom:

Re: Different tyre pressures on toyo/kumho/yoko??

by HenryJS » Wed Mar 06, 2019 8:40 am

Nick,

The brake pedal should be a fair bit 'higher' in the travel than the throttle. so should be fairly level when applying a medium - firm brake pressure.

Whats happening in your car?

Re: Different tyre pressures on toyo/kumho/yoko??

by John Scherrer » Tue Mar 05, 2019 8:35 pm

Hi Nick

Yours are height adjustable too !

The process involves adjusting the brake cylinder pushrod nuts to move the brake pedal to the correct height for you.

Re: Different tyre pressures on toyo/kumho/yoko??

by Nick C » Tue Mar 05, 2019 3:57 pm

Hi Toilet Duck..
nice driving there.
your car looks very well set up. not much movement at all...

can I ask what pedal box you are using? I have tried, but just cant heel & toe, due to the pedals being at differing heights... are they adjustable ones ?

Re: Different tyre pressures on toyo/kumho/yoko??

by speedmachine » Sat Mar 02, 2019 8:49 am

dc5ian wrote:ive just put a set of avon zzr on mine coming from the r888r. ill let you know how they compare in a few weeks. 43
Still qurious for your experiences as I just bought a set too. What pressures are you using? I think to start with 16 front and 19 rear, allthough Avon advices some bits higher (but thats also with yoko and toyo)


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Re: Different tyre pressures on toyo/kumho/yoko??

by speedmachine » Wed Oct 17, 2018 1:07 pm

dc5ian wrote:ive just put a set of avon zzr on mine coming from the r888r. ill let you know how they compare in a few weeks. 43

So how did it go?


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