Is it just mine or do MY03 STi's onwards tramline when driven ?
Sometimes the car appears to have a mind of its own, particularly under power
My wrx didn;t behave like my current car

 

Your sti has harder suspension, will find all the ruts in the road plus depends on the tyres the harder the tyre wall the more they tram line, I have just swapped my toyo's for yoko's and the yoko's are way worse at tram lining

 

Took mine to TSL in nottingham for the laser alignment treatment - for around £100 this is solved and gives you ooodles more grip too.

The tramlining is all to do with the amount of Toe-in and camber wound onto the car. As standard the settings are appalling but the guys at TSL will sort it and have it driving and handling like a dream. The difference is HUGE and the first mod that anyone should make to their car.

more info here: http://forums.sidc.co.uk/forums/619692/ShowPost.aspx

 

My 2003 STi PPP is much better on the Toyo's that came with the new 18" rims i put on. I find it not only Tramlines like it did with the Bridgestone RE040's that was on it but rides better and offers much better steering feel and wet weather grip

 

yes get the geometry sorted out. My old wrx used to do that , took it to tsl and they sorted it out. The camber on the wheels was terrible, it also caused the inside of the tyres to wear much faster. The car afterwards is totally different

 

I found that on my 53 wrx ppp when the tyres are 3/4 worn they tram lined terrible.