whats your advise

 

What car?

 

bttt

 

I wouldn`t worry, its going to pee down

 

higher than when on your every day drive

 

whys that then ?

 

Makes the car lighter

 

I've done a few 1/4 mile runs over the years in different types of cars and that's my believe that I get better times with having more tyre pressure than I would normally use when driving around the town/motorway!

 

 

[quote="NUTS RuS"]Makes the car lighter



really

 

lee you goin sunday?

 

More air




















Low is the way to go


Yeah i'm there for a shower on sunday

 

lol @ shower

 

surely less pressure gives you more traction due to surface area...

higher pressures will rise more when you race due to the tyres getting warmed and heating the air therfore less surface area???

dave

 

 

its a 2wd saff
more of a track car really om khumo track tyres

 

But also creates more drag....

 

very true indeed, could be like tying to drive with a near flat tyre on full launch, rwd car, all the weight transfer to the rear

 

Most people ran about 50psi in the tyres at the pod today
Few blowouts mind

 

 

Whats wrong with them??

 

Which size mate?

and what size (width) rim?

Lee

 

Really depends on what the compound is Lee TBH.

 

Med or soft... anything wrong with them?

 

205 45 16,s
7" rim

 

15-18psi

 

cheers lee,lets just hope the rain dos,nt cause to much of a problem


let face it ,its not like you would,nt know wot,s what with your launchin techniqe

 

its just trial and error,


I had my best 0-60 on those tyres


I've got everything crossed that it doesnt rain lol

 

Track tyres are generally built for circuit use and greater longevity so its more difficult to get an even spread of heat into them. Sure you will get your best time with them over a standard road trye, but just think what it could be.. But I also understand you possibly are going to drive there on them, do the event and then drive home so your looking for it t o be an all rounder I guess

Im keeping everything crossed for you all too, last time I went (2 years ago) it didn't stop all day It wont be like that this year

 

If it helps.. a good-power 300ZX that belongs to a mate of mine ran the other year at the pod... struggling for traction until we dropped the pressures from 30psi (245/40/18 or summat) down to 18/20 psi, didn't seem to help any less than that on his car, made a .7s difference, believe it or not.

Overcast day as well if that helps. Slightly damp track.

 

I know i'm going to make the move this year to real tyres but i just always wanted to do my times in full road going spec (e marked tyres etc) but the desire for a 10 is too much and thats what i'm going for later this year,



Lee

 

would high psi at the front and low at the back be good if it causes less drag

 

Depends if its FWD or RWD H15 FSC

For all the PM's asking me what pressures to run.... I don't know, every car/tyre combination will be different.

Try 1 run with them up, try 1 run with them down, swap fronts to back and backs to fronts if you have different compounds. Take note of the weather and tyre condition (hot cold etc) Start a log book and record YOUR findings and stick to what your happy with. I can guarantee that it wont be the same for the person behind you so its impossible to say what any optimum pressure will be..

Thats why they operate run what you bring days, so you can try out different ideas to find YOUR optimum, then you just put it all into practice on show days.

Just go and have fun if you havn't got as far as doing all that yet.

 

to be able to know exactly what to run, i also have a digital infrared tyre temp guage that i use throughout the day, helps me decide what the suspension settings are looking like also, but this can also be varied by tyre pressure, just to throw another spanner at the works

 

fOR FWD Try 18 front left 32 front right 49 rear right and 19 rear left,
dunno what time you would get but its sure to be fun lol