Is it the car or the tyres?

[gsmcoverage]

You know when you are on the motorways and in some spots on the outside (slow) lane, there are stretches where lorries have made 2 ruts for their wheels due to the weight....

I find when the car is on those stretches it has a real stability nightmare and is squirming all over the place trying to find a nice spot. Once the ruts clear its fine, stable and calm.

Is it the car or the Runflats? Anyone else notice this?

[mlumb]

id go for ditching the runflats,mine is soooooo much better without them.
mike

[Ruby Rag Top]

Happens on my C4 the same. I believe it is just where the gap between wheels on the same axle is larger on the lorries than our Vettes and the car is just trying to get o the bottom of one of the ruts. Then again, what do I know

[ZR1cliff]

Happens on all vehicles i drive when i "drive the ruts" seems to be worse the wider the tyre,parts of the M3 and the A34 in Newbury by sainsburys roundabout were terrible,i think theyve done some of these areas recently.
If ever i drove them in my cab with a fare on board i always made a point of pointing them out in case they thought it was driving..should of seen the looks i got of the foreign fares.

[Corsette]

In the cold weather, if your pressure is low, then the run flats are running on their edges and tram lining is a problem. Check you're at 30 psi.

[te51cle]

The tramlining reduces considerably when you get rid of the Goodyear runflats, its not perfect with normal tyres but its a lot better.

[franv8]

Tramlining is common with wide tyres.

For those more into the physics of this happening, I guess it's to do witht he greater 'moment' about the axis of turning (i.e. the balljoint/pivot axis) - probably easier to think of it like using a long bar on a nut - for the same amount of effort you exert more turning force, hence with narrower tyres the turning force is reduced and hence the tramlining feedback through the steering.

I am available for parties, barmitsphars, weddings, christenings etc.

[LuS1fer]

All cars will do it to some extent. When I went from 245's to 275's the problem was exacerbated. Luckily, most drivers seem to use the outside lane so it never affects them.

[roscobbc]

I'm pleased to see all you guys with the 'tramlining' issues are 'real and proper' drivers.
I.E. you all use the inside lane on motorways etc. Most drivers these days would never see the problem given the fact that so many only use middle and outer lanes.

[kenski]

roscobbc said:

I'm pleased to see all you guys with the 'tramlining' issues are 'real and proper' drivers. I.E. you all use the inside lane on motorways etc. Most drivers these days would never see the problem given the fact that so many only use middle and outer lanes.

Either that or you're overtaking on the left to get past everyone else :-)

[roscobbc]

Yeah, that too !

[franv8]

Alternatively, eliminate tramlining by using the hard shoulder - also handy for getting past the morons 'stuck' in the outside lanes!!

[roscobbc]

Its alright for the guys with 'runflats', they can use the hard shoulder and not worry about punctures from debris etc. us mortals with normal rubber can't even thing of running the hard shoulder (not that I would really the broken down vehicles get in the way!)

franv8 said:

Alternatively, eliminate tramlining by using the hard shoulder - also handy for getting past the morons 'stuck' in the outside lanes!!

[gsmcoverage]

roscobbc said:

They can use the hard shoulder and not worry about punctures from debris etc.

Only for 70 miles more at 60Mph as that is their life duration when flat!

[Dee Gee]

I get it all the time in Vegas with the rutted freeways. It's even worse when the pressures are low.

I have the stock runflats but plan to switch to Michelin Pilots when the traed is down a ways.

[madbrian]

Doesn't matter what part of the world you are in, a rut is a rut, and your tyres will follow it.