There is more to life with TurboRenault.co.uk

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

  • This section contains the archived boards. They should be read only. If you want a thread resurrecting please message admin and we can move into the live section

MK1 handling problems

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Hi Guys,

Last week I had 2 new rear tyres fitted, drivers side rear had worn on the outside edge quite badly. I took the car to a Motorsport specialist to have the geo checked using the settings i found on the forum. After the the car was looked at, i was told the toe settings were incorrrect so these were amended to the required settings as per list.

I drove the car home and it was spot on (even handling better than it was before the settings were amended, the steering felt precise and tight) once upto about 60/70mph and when driving round long fast bends, the car started to weave from the back end, almost like a FWD car giving lift off oversteer, it is worse going round right hand bends, as soon as i correct/straighten the wheel after the bend, the rear weaves slightly before coming back into line,

Tyre pressures are all spot on, i spoke to a mechanic friend who said it could be a rear link arm, bush or broken rear shocker/spring.

Has anyone experienced this or can anyone please advise?

Any info/guidance would be appreciated

Cheers
 
Yes,
The MK1 was developed om the Michelin Pilot sport 1 tyre.
That is a tyre whit a V-profile.
That tyre (sport 1) Michelin dont make anymore.
It is now Michelin Pilot Sport 2,but that is a tyre whit no V-profile.
When i fit the Pilot sport 2 on my MK1,i had the same problem as you.I called Michelin,and told the story,and the now exaktly wat in mean.The say that the Pilot Sport 2 is a bad tyre for the MK1,the car is then steering from the back,the tyre is to sensitive for the MK1.They advice me to fit BF Goodrich G-forse.That is a tyre whit a V-profile.Michelin owns BF Goodrich.I get them for free (!!) from Michelin and the are perfect!. A lot of grip and in a straight line,the car goes straight!!
Of course another brand tyre is also allright,if it is a V-profile.
(how is my english?)
 
I have put 2 toyo proxes on the car, 235/45/17 with Z rating. I had 'Champiro' tyres on the back when i got the car (the garage put new tyres on all round to sell the car. I would have thought toyo's would be an improvement in the handling and not have a detrimental effect. I run Toyos on my 172 cup and they are very good on that car!?

any other ideas guys?
 
I had a "specialist" misread toe settings once and put toe out on the rear instead of toe in.

This was pretty frightening as after hard acceleration I would lift off and the rear would dance left and right making it very unstable.....driving sedately you wouldn't notice and it might even go around a corner nicely too.
 
I didnt think about a bearing being the problem, wouldnt a damaged bearing make a noise if it wasnt right?

I have an RAC warranty with the car so will ring them tonight and get it booked in with my Renault stealer for a diagnosis

Is it worth asking the stealer to check the geo settings?
 
dennis,

its not that i dont believe you but ive just forked out £160 for new tyres which ive already fitted and the owners manuel states Z rated tyres for the front and back?
 
I run semi slicks on the rear without handling issues - no v pattern, the car is not that sensitive to tyre change in my experience and Tim has had a number of makes on his without an issue I believe
 
Mike T

thanks for putting my mind at rest with regards to the tyre issue, like i said, i cant imagine toyos being worse than 'champiro' tyres and toyos are cracking on my 172 cup. if anything, surely a lower speed rating (than whats specified) would make handling worse

any other ideas guys?
 
Allright,i have another experience.
I can not understand why my car is very sensitive for tyre change and your car is not. :s
Maybe the weather in over here is more senitive? :wink:
 
The problem you point out, looks, like TRW1 said, a misread of the rear toe settings. This gives your unstable behaviour.

Also try on an open field, hard acceleration during a shalllow turn and then straighten out, if it is wrong it will kick you around.

For the tyre discussion, the Pilotsport type 1 is the most terrible tire available for the Vee. Trust me I've tested them both.
Just try it in the wet on downslope accelerating bends. A true killer for this tyre!
As a matter of fact, the whole phase2 car was almost canceled until Michelin came with the Pilotsport2. This was so much of a difference to the handling that it saved the phase2 project.
(I know this, not from my thumb, but the projectmanager for the car)

But if anybody likes their tyre, please use it. I'm a real fan of the Pilotsport2

Just one thing, do you run the same front and rear? If not this might also be the cause of a lot of problems. specially PS1 in combination with PS2. The compounds on both tyres are different.
[smilie=dunno1.gif]
 
I'm having exactly the same problem. Two new tyres on the back, they were Avons that i was advised against getting [smilie=hide.gif] but I get alot of rear end wobble cornering at high speeds. I haven't noticed anything at low speeds but I haven't give it a real country lane thrash since the change.
 
Harry

I have Michelin PE2s on the front which were fitted in December. As mentioned, I have put 2 new Toyo Proxes on the back to replace the 'Champiro' tyres. has anyone else fitted Toyos to their Vee?
 
Second note, I recently played a bit with tyre pressures, from 1.8 up to 2.4, but also noticed a bit of wobble on lower tirepressures, lower than 1.9. I ended up with 1.9 to 2.0 on the front (Depending the drive), and 2.1 on the rear.

@Rja_cup: If you measure "spot on" tyre pressure, how do you do it, mind me asking?
If it's halfauds stuff, then go out and get a decent one, they cost about 20 pound, but more acurate.

To find out if their is some shock, or mechanical related problem, just try carefully with a tyrepressure of 2.4, to get the tyres real stiff, you will loose some grip. but this will be over the whole range. If the wobbling and so on is gone, experiment a bit with higher tyrepressures on the rear. I suggest not to start with 2.4
 
Harry, thanks for the advice, do these pressures relate to a MK1 Vee?

Also, i know it has been mentioned stacks of times but could you put up the correct geo settings on this link please?

I have an old fashioned tyre pressure gauge that 'pops' the measuring stick out of the top, it looks like a pen. sorry for the vague description!? :)
 
I don't know about the ph1 settings, but there isn't a lot you can modify, main thing is, to get the rear wheels pointing inward towards the front. that means positive toe.
How much and how to set up the front, is also due to tire compounds, (which you already changed) and personal taste.
Tire pressures are also important, but better start of a bit too high, and go downwards from there, experimenting seperately on front and rear. I know it's easy for me to say, with laseralignment to my disposal, but it is worth trying, and learning you car this way.

The pen measure isn't that accurate, a dial version is more acurate, I think Sparco has them too. At least any decent Motorsportshop (not the bling bling carbonfiber fillercap sticker Corsa tuningshops)

The geo settings will be in the wiki area I'm sure.
 
Back
Top