tramlining

[skywriter]

hi can any member explain the term tramlining in relation to the b7 rs4 had a funny expereince last night when the car wanted to take over the steering never had this feeling before any thoughts on the cause or cure

[RS6chris!]

what tyres you running?

[skywriter]

hi i'm running michelin ps2 stock

[RS6chris!]

I,m on pzeros my car sometimes feels as if its doing this..i just put it down to camber on certain roads and road surface..then it fells ok on other surfaces etc...i dont get any uneven wear or tracking issues either..

Strange.

[no_RS]

Tramlining is due to a poor and uneven road surface and more noticeable with wider tyres. I encounter this particularly in the left lane of the motorway where the lorries have worn a groove in the road surface and the tyres follow the groove.

[sonny]

Does this happen all the time while driving or did you experience under hard breaking at high speed?..the car is known for being "busy" while under hard breaking.

Remember tram-lining will occur mostly in the area of traffic light or junction, due to summer traffic slowing down and making a impact on the tarmac, low profile tyre suffer most from tram-lining.

[MoRS6+]

Tyre Pressure!

My car was tramlining BADLY and I was just ignoring the TPMS warning on the dash thinking it was 1 or 2 psi down - anyway, the message started to really bug me so I checked my pressures and the fronts (Vreds. 275/30/19) were at 32 psi! Rears weren't too clever either.

Pumped them back up to 39 and all tramlining has ceased.

[bye bye]

Phew, glad I just read this.

My car does this on uneven A/B roads...sometimes you really have to wrestle with the steering wheel for a few seconds when accelerating or braking hard....then as soon as it comes it goes...

I keep an eye on my tyres pressures so it's not that....just wide rubber at the front and physics I guess.....275s must be worse?

[psg001]

mine does this too occasionally on some roads, seemed to be doing it more recently. checked the tyre pressures yesterday and the rears were down to 31 psi so pumped them up to 40 and the fronts I think I set at 36. seems to be better now.

[sonny]

31 wow that is low, do you norm run them at 40 psi >255s?

[P_G]

mine does this too occasionally on some roads, seemed to be doing it more recently. checked the tyre pressures yesterday and the rears were down to 31 psi so pumped them up to 40 and the fronts I think I set at 36. seems to be better now.

It should be the other way round with 40 at the front and 36 on the rears for best results. It'll indicate this on the driver side B pillar.

[booski]

Mine did this when the DRC had started failing!

[booski]

Mine did this when the DRC had started failing!

[psg001]

31 wow that is low, do you norm run them at 40 psi >255s?

i must have misread the readings on the door pillar thinking it was meant to be higher at the back. would have normally put about 36 all round.

[sonny]

31 wow that is low, do you norm run them at 40 psi >255s?

i must have misread the readings on the door pillar thinking it was meant to be higher at the back. would have normally put about 36 all round.

I put 39 R and 38 F psi in (im sure this is the recommended setting). On the track 44psi.