Mine were on a tuned escort and they were that bad I lost count of the amout of times I had gritted my teeth while skiddin in the wet toward a car thinking this is going to be bad, luckily didnt crash once but had LOTS of near misses
Solution Found! Just purchased myself some 17" 6 spoke audi TT alloys which are sat on 225/40/17's so fatter and lower profile, only paid £100 for them aswel all with half decent tyres on. Hopefully this will calm the understeer down win win