i would only advise tracking if you have either hit something or your tyres have worn unevenly or on one shoulder.
UK roads are aweful the tram tracks mean the pulls on its own or when changing lane it takes a lil more steering to get out of the rut.
also most roads are higher in the centre and slope off. this is most likely for water drainage but also means the car will gradually veer left if you hold the steering dead staight the way to counteract this is by turning slightly too the right. i dont recomend this, but, if you have a clear stretch of road drive on the wrong side and you will find it pulls to the right. Only do it on a quite road where you can clearly see vehicles comming so you can pull back over. dont want to have an accident an have to try explain what happened
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06 ST White mods so far:Privacy glass,Black ST wheels with blue rim,EcoTec valve,K&N induction kit,Pipercross breather filter,Miltek flexi,Scorpion cat back.ordered BLUEFIN.
Next on the list:12.5mm spacers,Exhaust,springs