I have yet to own any GOODYEAR F1 GSD3 that did not develop bulges and have never hit a kerb in thier life, they just seem to do it at around 4 years old, on three different cars I know of.
FRont subframe alignment is very important on a mondy as well, although mondies do seem very sensitive to road surface and will pull gently, a different tyre can make it worse or better depending on the tyre as well, so I increase prerssure by around 3psi on the nearside and it stops it.
tabetha