ok
- just a few facts.
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if you lower the car on lowering springs.
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get yourself a set of camber adjustment bolts, peter at sbits does them, as does camskill? because with the car being macpherson struts the wheels go up in an arc and end up running on the inner edges of the tyres when you shorten the springs.
these tyre sizes might be a little out in terms of diamater, but you'll get the idea,
re the big wheels thing, basically spittin flames is right, but he forgot to mention one critical part of it, when you are really going for it, the more sidewall you have on your tyres, ie smaller wheels bigger tyres but same rolling radius, the more warning you will have that you are running out of grip.
this is because when the car elasn on the tyres with centrifugal force, the tyre distorts, leaving most of the tread at the bottom, think of lifting a bean baf off the floor, it changes shape a little to keep some of its base on the floor till the last possible moment.
so it gradually loses contact, in this analogy
- grip.
so
- on say 235/55/15 on the back the tail will slowly lose grip and develop over steer gradually giving you time to ease off the steering input and gas in time.
however on say 235/35/18 you have the same amount of rubber touching the ground, so initially the same grip.
but as the car leans on to that rubber latterally,
it cant flex as much and gives up its grip with much less warning than tyres with more sidewall
very difficult to put into words but hopefully you've got the idea.
there is a sticky explaining it much better than i ever could, i thinki it is in mechanical section iirc
I found the Apex lowering springs on Jap-spec-performance.co.uk and are considering getting them.
