Shit Tyres In The Wet Or Crappy Suspension Setup?

[Wacky Dee]

Here's a few more shots .. the last 2 are from the front wheel/suspension. Does this help?

Edited February 7, 2009 by Delta Force

[badhairdave]

I'll offer a suggestion.

take a corner in the wet and see what happens, then do the same corner at the same speed with traction control on.

That will tell you straight away if you can't control the throttle.

Typical skyline handling will pretty much mean if you go into a corner too hot and turn in you will understeer, if you hit the accelerator you will keep under steering until it snap over steers. You have stock springs and sway bars, so short of massive front and rear toe out your car should do this (and heasmans will not have given you toe out for a street car)

Your photos show the pineapples on the bottom at the back, which means it's either neutral or traction. Not drift

Don't call an alignment shitty because they use old gear. Track cars are set up with string lines and tape measures. Post the details of your alignment (camber, castor and toe front and rear) before calling it shitty.

If you have the same tyres front and rear the handling should remain balanced. mid 30's is plenty of pressure for a street tyre. You've said that the ride is rougher with more pressure in the tyres, surely you get that this means it will be less forgiving over undulations when cornering?

On the centre to guard measurements, have you checked the cars height at the front sills to confirm it was measured incorrectly?

[wolverine]

do you have the rear camber setting?

there doesn't appear to be any aftermarket rear eccentric bushes. if you have lowered the rear (increasing negative camber) you will probably find that explains the desire to light up the rear.

it is hard to help unless we know what settings you have on your car. (unless i missed them).

how low is the rear? centre of wheel to arch?

Edited February 7, 2009 by wolverine

[Wacky Dee]

I'll measure it all tommowo and try and get a wheel alignment readout asap.. Dave, what do you mean by "sills", you mean chasis to floor distance near the wheels?

[badhairdave]

measure from the underside of the car directly behind the wheel arches.

The sill is the bit that runs under the door

[Wacky Dee]

yeah thought so ..will do. I suspect it's out by 1cm or so but according to Heasmans when I asked them to check they said "1cm out is within spec so woudln't cause any traction loss" so hmm..

Edited February 7, 2009 by Delta Force

[SLVR32GTR]

The Maxxis MAZ1's are awesome tyres in the wet and this was shown in a Motor tyre test a year or two ago where they beat all the top tyres in the wet. I have run them on my GTR for a year or so and have had no issues at all, so i cant see how its the tyres. In saying that, i had Pedders do an alignment for me to start with that i wasnt happy with. I later had an alignment done by Bob Jane to Sydney kids specs and the car handled completely differently.

[bubba]

ok can you please tell me what you mean by 'side on' ? Did you want a photo from under the front of the car ie. front suspension?

From the side of the car..

Here's a few more shots .. the last 2 are from the front wheel/suspension. Does this help?

Still can't see the forward cradle bushes..

Grab your camera, lie on the ground just forward of one of the rear wheels and take a photo looking across the car kind of back towards the diff.

Basically the rear cradle attaches to the chassis at 4 points, you have a photo showing the bushes at the rear two mounting points but there is another 2 points at the front of the cradle that will have bushes aswell.

Whether these are between the cradle and chassis, or under the cradle will tell us whether they have been set up neutrally or in the traction configuration

[Wacky Dee]

ok took a few more shots not sure if they shot what you had in mind but this is as best I could do without putting the car up on a hoist

ok and wtf is with the last pic and the catback??? its only 9 months old or so does that look like rust and a big chunk falling off??

Edited February 12, 2009 by Delta Force

[JMW]

Looks like the remains of a plastic bag on your exhaust, nothing to worry about.

I run 38psi in my 18" with no dramas.

Also remember, new tyres have a mould release agent on them. This takes a few km's to wear off.

Edited February 20, 2009 by Jamesrb25

[SLAPS]

18's low profile = less straight line grip regardless if the tyres are a fair bit wider, less sidewall flex so over bumps yeah you may find under throttle it tends to get loose a little easier.

I've tried a set of wide middle range 18's and found a good set of 16's leave them for dead for acceleration grip.

Corner grip; the 18's are the way to go but trying to get 300+rwkw down where its making 250rwkw by 4000rpm can get a little tricky.

Learn throttle control and get the feel of the car and you won't be fishtailing anywhere, if acceleration grip is what you want drop back to at least a 17".

Edited February 22, 2009 by TheRogue