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AZURES3

Goodyear Eagle F1 Asymmetric

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There's a huge lump of metal over the front wheels, therefore the pressure should be higher.

I think RR's golf has been corner weighted, which might explain his pressures.

Edited by Tipex

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Eeer Why?. I run mine unloaded even PSI front & rear.

Not on a Golf. There's a reason manufacturers give pressure ratings. 35psi in the rear will make the car very oversteery, but doubtless Robin has an explanation as to why.

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There's a huge lump of metal over the front wheels, therefore the pressure should be higher.

I think RR's golf has been corner weighted, which might explain his pressures.

However, he's also got a carbon fibre bonnet which will have significantly altered the car's centre of mass and F/R weight distribution which will need to be factored in. Having said that, its been painted so that'll be another line in the equation...

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But what about all the other bolt-ons? There must be an extra 10KG at the rear with that quad-pipe Milltek and another 15KG at the front with the other carbon fibre bolt ons.

And that TOW sticker - 3KG there at least.

I think it's all going to go Pete Tong...

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....

Hi guys, I'll try and explain best I can but even at my ripe old age I've got a Novice sticker on my car!

On the Mk5 Golf GTI, VW recommend even pressures allround except when fully loaded : -

TyrePressures_label.jpg

Yes, Tipex is right - My car has been corner-weighted and also setup with a small amount of negative camber on the rear. I'll ask my suspension guru at VWRacing what he has to say about even vs uneven tyre pressures on the Mk5 GTI and my car in particular. For what it's worth, I'm also on KW-V3 coilovers and Whiteline Anti-Lift Kit (castor).

When I did the track day at Spa in October I didn't bother to unload my suitcase etc and it was wet and one of the sessions I drove was 15 laps with ESP off (I had an instructor in the passenger seat). I got very small amounts of understeer which was easily correctable and greatly helped by the Quaife diff on the FWD. I prefer that to understeer - Probably because with understeer you can see yourself kissing the hedge in slow motion! Whereas with oversteer you don't recognise how bad it is until you are overtaken by your own rear end!

I'm currently running 37 psi allround.

HTH +++

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However, he's also got a carbon fibre bonnet which will have significantly altered the car's centre of mass and F/R weight distribution which will need to be factored in. Having said that, its been painted so that'll be another line in the equation...
But what about all the other bolt-ons? There must be an extra 10KG at the rear with that quad-pipe Milltek and another 15KG at the front with the other carbon fibre bolt ons.

And that TOW sticker - 3KG there at least.

I think it's all going to go Pete Tong...

....Brilliant banter as ever, guys!

This why I'm adding some AeroCatch bonnet catches to fine tune the corner weighting :grin:

+++

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Surely that'll impact the aeordynamics. I wouldn't want to increase the drag coefficient, or there'll be no point fitting all that carbon fibre.

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....

When I did the track day at Spa in October I didn't bother to unload my suitcase etc and it was wet and one of the sessions I drove was 15 laps with ESP off (I had an instructor in the passenger seat). I got very small amounts of understeer which was easily correctable and greatly helped by the Quaife diff on the FWD. I prefer that to understeer - Probably because with understeer you can see yourself kissing the hedge in slow motion! Whereas with oversteer you don't recognise how bad it is until you are overtaken by your own rear end!

Just to confirm, you prefer understeer to understeer? ^ ^ ^ :grin:

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Give the guy a chance Mollox - he's not had his tablets today. It's very easy to get confused you know :P

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Just to confirm, you prefer understeer to understeer? v v v :grin:

....Sorreeee! I prefer oversteer to understeer but can't edit my post now.

Tablets now taken :D

+++

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BMW recommends the same PSI front and rears unless fully loaded, and the car has almost 50-50 weight ballance, no big lumps on the front.;)

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er - last time I looked required pressure is related to tyre design,aspect/size & aspect ratio vs weight only.

More likely you need to adjust the suspension geometry to affect understeer/oversteer.

If you're playing with tyre pressures for road use then you're more likely compromising wear and safety than than improving handling.

(I will add exclusion for track use where small changes can indeed tweak handling but then only after the suspension is setup right)

;)

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Tablets now taken :D

+++

Well................................... Did the Viagra work .................:roflmao:

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There must be a replacement tyre for the M3 E92, other than the "Impossible to find PS2" or the crap Conti sport 3.

Anyone had any success with !!!!!!!!!!.

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Golfer try the Cup+

I think that everyone with a performance type car, golf gti, m3 etc should try a track biased tyre like Toyo's, cups or corsa's. For the last 2 years I have worn nothing else on the csl in rain, snow (was one of the only people to make it in to work that day, sidways down notting hill) and sun shine.

In the dry they will do more for handling and feel than any suspension set up, will totally transform any car. I cant use PS2's any more, make the car feel wobbly and in-alert. You will also find your brakes feel more powerful under pressure. Why, because you have more grip, abs doesn’t cut in.

In the wet they are just as grippy as the PS2, only standing water can create a problem. Just pay attention and drive around it!

Have a go people, it will turn you in to driving gods!

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Golfer try the Cup+

I think that everyone with a performance type car, golf gti, m3 etc should try a track biased tyre like Toyo's, cups or corsa's. For the last 2 years I have worn nothing else on the csl in rain, snow (was one of the only people to make it in to work that day, sidways down notting hill) and sun shine.

In the dry they will do more for handling and feel than any suspension set up, will totally transform any car. I cant use PS2's any more, make the car feel wobbly and in-alert. You will also find your brakes feel more powerful under pressure. Why, because you have more grip, abs doesn’t cut in.

In the wet they are just as grippy as the PS2, only standing water can create a problem. Just pay attention and drive around it!

Have a go people, it will turn you in to driving gods!

can't argue that one bit - just dont expect them to last ;)

brilliant fun for about 5K miles

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I've just moved over to Toyo T1Rs from F1 GSD3s and they've been great so far, I did used to get the odd "brown trouser" unexplained, uncontrollable handling failure which did worry me. Took it to my friend's garage, car was up in the air and inspected everything, no faults found. Soon as the tyres were replaced the problem was solved, until they were partly worn again and it would come back. It was worse when the rears were worn, moreso than the fronts as I used to change the fronts 2:1 against the rears (fwd car Audi).

Since the Toyos have been on the road noise has reduced and not had any "moments" yet..

Time will tell.

The GSD3s have now been discontinued so I've been told.

Alex

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I've just moved over to Toyo T1Rs from F1 GSD3s and they've been great so far, I did used to get the odd "brown trouser" unexplained, uncontrollable handling failure which did worry me. Took it to my friend's garage, car was up in the air and inspected everything, no faults found. Soon as the tyres were replaced the problem was solved, until they were partly worn again and it would come back. It was worse when the rears were worn, moreso than the fronts as I used to change the fronts 2:1 against the rears (fwd car Audi).

Since the Toyos have been on the road noise has reduced and not had any "moments" yet..

Time will tell.

The GSD3s have now been discontinued so I've been told.

Alex

How many miles covered on the Toyos Alex?.+++

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can't argue that one bit - just dont expect them to last ;)

brilliant fun for about 5K miles

yes, i suppose they wont last as long on the road. on the track they last longer as PS2's etc turn to liquid and sidewalls fall apart. So in essence they actually last me longer.+++

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How many miles covered on the Toyos Alex?.+++

Not many, only had them fitted on Friday...lol

Good as gold so far, still bedding them in. I'll update this thread after about 1000 miles or so with the progress (which won't be long as I do about 16k a year).

Alex

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Not many, only had them fitted on Friday...lol

Good as gold so far, still bedding them in. I'll update this thread after about 1000 miles or so with the progress (which won't be long as I do about 16k a year).

Alex

Nice one.+++

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yes, i suppose they wont last as long on the road. on the track they last longer as PS2's etc turn to liquid and sidewalls fall apart. So in essence they actually last me longer.+++

Rears let go first by any chance Woppum? :cool:

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