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What Tyres Should I Run To Obtain Better 1/4 Times, Also Tyre Best Pressure?....help! :)


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Hi guys,

I'll be running my car down the 1/4 in the next two weeks, its a r34 gt-t making about 200kw auto, now i have the choice of either running my works meister 18x10's on the rears which i wont be doing due to the fact i dont have $34923923 for another set of 18inch tyres :)

Now i can either run my standard r34 gt-t rims on the rear with summitomo 90% tread 235/40/r17's on the rear or i have a set of r33 rims which i can put some 16inch rubber on of my choise.

Now to obtain the best result down the quarter, what rims/tyres cobination would optimise my time, and also what is the best tyre pressure to put the tyres to?

Anyone with past experience your help is needed.

Thanks guys! :)

Personaly I have always been a fan of racing a car exactly as you drive it every day.

I do agree with you there, although i always get a bit tempted on the burnout pad before i run :D , so personally just dont want to ruin my perfectly good 18 inch tyres, would perfer to use my 17s or buy some decent rubber for the 16's, just need to know what combo/psi would be best.

Thanks :laugh:

do some googling ....

there is a formula to work out how to get maximum traction/responce from what size rims you run & tyres. with diff gears etc etc...

basically i was sort of explained to by a mate who worked it all out for his datto with a ca18 in it... that as a really rough guide you should be approximatly crossing the line at the top of your 1:1 gear. ie. 4th.

for me in my s15 its the top of 5th... but just realised yours is an auto...

so if you want more responce drop down to a 16" tyre with about 55 profile on it and loose some pressure out of it. should work great.

This is exactly what is needed and nothing more:

http://www.skylinesaustralia.com/forums/Mi...es-t204639.html

They would be great! but dont want to spend that much.

I've decided to run the 16's although still dont know what PSI to run them on, and also what profile tires to get. would 225/50/ZR16 be about right anyone suggest anything better? PLUS PSI, PSI,PSI common guys someone has to know whats best to run the tires on i always see people dropping tyre pressure. ;) It's not that much of a secret is it :banana: lol thanks guys.

If you have to buy tyres for your 16" rims than for an extra $100 you could get the above mentioned.

I can get good 2nd hand tires with reasonable tread for under $100 so $500 is a bit to steep. Thanks anyway mate.

Just need to know the best profile and psi to run :D

225/50/16 @ 28psi

Remember they are road tyres not drag radials so lowering the pressure won't have much/any effect on performance like a drag slick or radial would.

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