| Author |
Message |
Mark Donovan
TryHard
Auckland
V8 Limited
Posts: 449
Reg: 07-2005
|
Second xmas in a row, I have just spun out the back of the car 180 degrees (involuntarily) while making a right turn from a traffic light (from stationary). Today was going onto a motorway onramp (Northcote Rd, heading north). Last year was at the traffic light on Market Rd, going on to Remuera Rd.
Both days it had been raining lightly earlier in the day, so the tarmac would have been more slippery, but my pulling away from the lights is slow and smooth (under 25km/h), no aggressive acceleration or desiring to spin the wheels at all.
Last year I was unfortunate to just go over a polished manhole cover at the wrong angle and that put me in a 180 degree spin, but today was, from what I could see, just regular tarmac. I don't think there was any fuel or diesel spilled.
I am positive I was not going too fast for the conditions. My first thoughts went to the Bridgestone Potenzas I have which I have never been particularly happy about in the wet. (1 month after fitting them, they were spinning on wet tarmac when trying to move off from a green light - lambton quay, wellington) - again, at low revs.
FWIW, all tyres have plenty of tread, although from memory I *think* they are about 2.5 yrs old now.
So, I've put new tyres on my list for this year. Any recommendations?
Secondly, I know it would be a major job but I was just lazily wondering if it would be worth retrofitting TRC to my Soarer?
Has anyone done this? I can only find references to retro fitting ABS, which I already have.
Lastly, would fitting a limited slip diff help in these situations? |
Matt Petersen
DieHard
NA
V8
Posts: 652
Reg: 01-2008
|
An LSD would be worse normally Mark.
An open diff will generally just let one wheel go and not do a 180.
I am suprised the Bridgestones are no good, but I can't think of anything other than the tires.
The V8's don't make a heap of power and need a few revs to spin the wheels normally.
Matt. |
James Johnson
TryHard
Auckland
UZZ31 Soarer
Posts: 231
Reg: 03-2009
|
Hmm I don't know about a LSD but from my experience in the wet you have less control with one. I have noticed if you flick the switch by the gear stick labeled ECT (PWR and NML) if it is raining I have my car in drive and the switch on normal and just take off normally and about 8 times out of 10 it wont spin the wheels. I have a LSD and compared to my open diff and my mate Mike's car that is open it is so easy to loose traction in the wet. |
Ali Saeed
Goo Roo
WA
V8 Limited
Posts: 1619
Reg: 09-2007
|
its easier to control the car when both wheels are spinning, thats why LSDs are helpful, dont know if they would be in that situation. |
James Johnson
TryHard
Auckland
UZZ31 Soarer
Posts: 232
Reg: 03-2009
|
Well Ali if you are used to loosing control then I guess it can be easier to control as you can predict when it will spin and what it will do. But in NZ here when it is wet the roads are very slippery, I don't know what it is like in WA though... |
Ali Saeed
Goo Roo
WA
V8 Limited
Posts: 1620
Reg: 09-2007
|
hardly ever slips here. unless you deliberately want to. guess NZ needs better tarmac? |
Darryn Dewar
Goo Roo
Gisborne
UZZ30 Soarer
Posts: 1042
Reg: 09-2005
|
I have no problems with 255 wide RE-001's, unless I'm deliberately being a muppet |
Ali Saeed
Goo Roo
WA
V8 Limited
Posts: 1622
Reg: 09-2007
|
ive got •••••• 235 maxxis on my stocko v8 and they NEVER spin. even when im deliberate lol  need a TT manual with LSD  |
Mark Donovan
TryHard
Auckland
V8 Limited
Posts: 450
Reg: 07-2005
|
Yeah NZ could do with some better roads - they are made deliberately crap I reckon. That's why they rip them up every summer and re-do them  |
Ali Saeed
Goo Roo
WA
V8 Limited
Posts: 1627
Reg: 09-2007
|
wow what a pain in the butt |
Scott Casey
TryHard
nsw
soarer v8
Posts: 373
Reg: 02-2008
|
Mark i know what you mean. I have troubles with pedestrian crossings while negotiating a left or right hand turns in the wet (under 25kph). i do have s*it 50% tread dunlop 245/40/18 on the rear.
One of my friend's has been a tyre fitter for 8 years. One of the best tyre's in the wet is the previous versions and the latest version of the Kumho KU19 and KU25.
The police have changed from fitting the original "brand" of tyres to their driver training, highway patrol cars to kumho. They also get more kay's and cheaper. |
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31
Posts: 11209
Reg: 11-2004
|
What tyre pressure do you guys run when you have grip problems? |
James Johnson
TryHard
Auckland
UZZ31 Soarer
Posts: 234
Reg: 03-2009
|
Well day in day out I run about 30 PSI.
Mark, all you need to do is as I said and flick it into normal instead of power and you should be fine. |
Mark Donovan
TryHard
Auckland
V8 Limited
Posts: 452
Reg: 07-2005
|
I am always at or near 34 PSI.
James - I always have it in Normal, for longer gear timing/better fuel economy. |
George Funa
TryHard
NSW
Soarer TT
Posts: 308
Reg: 05-2006
|
I had an open wheeler and it was unpredictable at times in the wet. Especially, going through round abouts. Now that I have a torsen , traction is much better are no more WTF situations. Kuhmo MU31 is a good tyre as well |
James Johnson
TryHard
Auckland
UZZ31 Soarer
Posts: 235
Reg: 03-2009
|
How many KMS has it done Mark? |
Mark Donovan
TryHard
Auckland
V8 Limited
Posts: 453
Reg: 07-2005
|
on new years eve, it had done 227,371km |
Boris Siljanoski
TryHard
Western Australia
Soarer GZ20 TT
Posts: 109
Reg: 11-2007
|
Ali Saeed wrote on Monday, January 04, 2010 - 07:36 pm: ive got •••••• 235 maxxis on my stocko v8 and they NEVER spin. even when im deliberate lol :-( need a TT manual with LSD :-)
Maybe you have TRC on? |
Matthew Sharpe
Goo Roo
North Island
JZZ31
Posts: 5054
Reg: 10-2005
|
Potenza's are usually very good tyres, wet or dry. Could it be something else? Sway bar loose or bushings stuffed? A stuffed shock? Something else like that? 34 psi is a little low for a 17" tyre, but not too low. I'd probably run them at around 38 myself.
Otherwise I can highly recommend Yokohama A Drive R1's. Good multi-purpose tyre. |
Mark Donovan
TryHard
Auckland
V8 Limited
Posts: 454
Reg: 07-2005
|
Thanks for the tyre suggestion, Matt.
Shocks are fine - they are all new as of late 2006, same as the bushings. Sway bar also fine.
I will mention to my mechanic next time I'm down there, see if they can spot anything wrong. |
Ali Saeed
Goo Roo
WA
V8 Limited
Posts: 1641
Reg: 09-2007
|
Boris Siljanoski wrote on Wednesday, January 06, 2010 - 06:27 am:Maybe you have TRC on?
no i dont have trc on lol..tires seem to grip pretty good. anyway the auto tranny isnt very good at putting the torque down, thats why lsd + manual= great fun |
James Johnson
TryHard
Auckland
UZZ31 Soarer
Posts: 236
Reg: 03-2009
|
With that amount of KMS Mark, I would not be too surprised if your diff is on it's way out. When I first got my Soarer it would always spin both wheels but about 3 months down the track, bang it went, so that is why I now have a TT LSD in mine.
What sort of servicing have you done to your diff?
If you want I can very easily find out for you if it is your diff...... |
Mark Donovan
TryHard
Auckland
V8 Limited
Posts: 455
Reg: 07-2005
|
heh heh, would that involve some high speed circle work?
That sounds wrong.. I mean like this:
http://www.youtube.com/watch?v=IHK_2eoBaFU
seriously though, you made a good point. I know that my diff is not in a healthy state, i don't know why I didn't remember to think of it - on more than one occasion I have had people attempt to fix a leak from it, only for the problem to return. I can imagine the insides are probably in not so great a condition.
What do you think - time to get one of those diffs that Rory is selling on TradeMe ? |
Nathan Cryer
Tinkerer
Victoria
SC400 V8
Posts: 98
Reg: 10-2009
|
I used Yokohama C drive tyres when I lived in Tassie. They wouldn't let go even when you were pushing hard. Only down side is they only lasted 20,000 klm (a few Targa Tas stages tried at speed included) and cost $180 each. |
James Johnson
TryHard
Auckland
UZZ31 Soarer
Posts: 237
Reg: 03-2009
|
Mark Donovan wrote on Wednesday, January 06, 2010 - 06:53 pm:What do you think - time to get one of those diffs that Rory is selling on TradeMe ?
Well that is what my brother has in his soarer and he got a place called Steely Gears in Otahuhu to install it along with change a couple of clutch packs I think...?
It doesn't have to be circles as strait lines are all you need.....
Just when my diff was on it's way out it would light up both wheels all the time but that was because it was on its way out and I do not know how long it was like this for tho.
If you do end up getting one of those diff's, give me a yell and I can help you drop it out and put it back in if you want as I have done it twice now. |
Myles Jantzen
Tinkerer
SA
SC 400 V8
Posts: 88
Reg: 08-2008
|
Ditch the bridgestones and get some Khumo, I have KU-31's and never had problem in wet both light and heavy rain  |
Damian Ware
Goo Roo
Victoria
UZZ32
Posts: 1283
Reg: 10-2005
|
Myles Jantzen wrote on Thursday, January 14, 2010 - 08:38 pm:KU-31's and never had problem in wet both light and heavy rain
Myles the KU31's along with most of the Khumo range are cheap performance tyres. IMO they do not and don't compare to a top quality bridgestone's pilot sports ect. |
Matthew Sharpe
Goo Roo
North Island
JZZ31
Posts: 5089
Reg: 10-2005
|
Indeed, I've found Korean tyres are consistently crap, and I'm never buying another set. From now on I'm sticking with Japanese and European, neither of which I have ever been disappointed with. |
Scott Wilkes
Goo Roo
Tasmania
92 TT Factory Manual, 70 HG GTS Monaro
Posts: 1207
Reg: 10-2008
|
ive got a manual JZZ30 with factory LSD, im running maxxis MAV1s and they have been stupidly good so far.
Front tyres are still like new after 20,000ks, rears well, there looking a little worse for wear but that may have to do with a certain fun activity haha.
The grip these provide is awesome, in the wet, dry, icy conditions, the grip just seems endless. For a cheap tyre, they have lasted great, provide good grip and are just a good allround tyre |
Damian Ware
Goo Roo
Victoria
UZZ32
Posts: 1285
Reg: 10-2005
|
Matthew, no offense but you keep making comments based on your bad experience with the budget Hankooks that you had. You need to get passed them mate and remember they were not great tyres and not compareable to great tyres just cheap budget long wearing tyres that will never perform well.
If you have Hankooks top of the line tyre previously V8RS now the V12 EVO that is compareable to a Pilot Sports you would have a very different opinion.
I have personally owned the V8RS tyres and they were great didn't do anything wrong at all they actually drove better than PS and the only thing I would change is to make the rubber slightly softer. The V8RS rubber was slightly harder than PS and the new V12 EVO has slightly softer rubber and outperforms PS2's. |
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